Valve Cover Adapter for Center Bolt Heads

#91017157

Valve Cover Adapter for Center Bolt Heads

Name: Valve Cover Adapter for Center Bolt Heads
Brand: Speedway Motors
SKU: 91017157
Price: 117.99 USD
Availability: InStock
Rating: 4.4 (46 reviews)

46 Reviews

20 Questions

Bolts to centerbolt heads allowing user to use standard valve covers and stud girdles
O-ring seal on head side
Use standard gaskets on valve cover side

$117.99

/pair

In Stock

Quantity

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Product Summary

.375" Overall Thickness, Gasket(s) Included, Aluminum

Bolts to centerbolt heads allowing user to use standard valve covers and stud girdles
O-ring seal on head side
Use standard gaskets on valve cover side
Compatible with '60-'86 "straight bolt" & '55-'59 staggered bolt valve covers
Will not work with aluminum roller rocker arms

See more details

Key Specs

MFG. Part #	91017157
Brand	Speedway Motors

See more specs

Need To Know

Need help?

855.313.9176

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Speedway Motors 91017157 Details

As you know, you can't run a stud girdle when using centerbolt valve covers. These handy adaptors simply bolt to your centerbolt heads which allows you to use standard valve covers and stud girdles. O-ring seal on head side. Use standard gasket on valve cover side. Has bolt holes to use with early '60-'86 "straight bolt" valve covers as well as '55-'59 staggered bolt valve covers.

Will not work with aluminum roller rocker arms.

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Speedway Motors 91017157 Specifications

KEY SPECS
MFG. Part #	91017157
Brand	Speedway Motors

GENERAL
Overall Thickness	.375"
Gasket(s) Included	Yes
Hardware Included	Yes
Material Type	Aluminum
Finish	Natural
Sold in Quantity	Pair
Notes	Made to mount "perimeter" style valve covers on '86-newer heads.

Ratings & Reviews

4.4

46 Reviews

Overall Assessment

The product is highly commended for its versatile fit, high-quality material, and excellent workmanship. Customers appreciate its ability to adapt older valve cover styles to modern engines, providing an "old school" touch to their vehicle. The adapters can work with both early and late Gen I valve covers and fit perfectly on various engine models. Some customers have noted the need for minor modifications, such as grinding to adjust to roller rockers, but overall rate the quality and design of the piece positively. The adapters are found to be practical, meeting consumer expectations, and often outperform their competitors by offering better fitment and material quality. However, inclusion of instructions for installation could improve user experience.

Write A Review

4.4

46 reviews

Most Liked Positive Review

5.0

Yes I would but this again

With a some grinding and modifications I got them to fix with my big roller rockers, they have a plenty of material that you and grind off to make them fit.

Most Liked Negative Review

3.0

Be cautious

Could not use on my dirt motor for a couple reasons. First problem was our raised pushrod guides would not fit with them but switched up flat guides mo problem. Now the big problem was they will not fit with a big rocker arm. Have seen descriptions that say must use narrow rockers. So be careful in ordering.

Filter by Ratings

Sort Reviews

Perfect

5.0

10 months ago

The fixer

Bangor, ME.

Verified

Worked as described.

Would Recommend

I would buy again

4.0

a year ago

Harry

Buffalo ny

Verified

Great fit no leaks like some say. Must be careful the bolts don't go all the thru and hit the head, it will push up the adapter and it will leak.

Would Recommend

Pieces look good

3.0

a year ago

Smitty

Cincinnati ohio

Verified

Adapters look nice came with all hardware needed

Would Recommend

Yes

5.0

a year ago

Larry Slone

Auxier Ky

Verified

Worked great

Would Recommend

I would buy again!

5.0

2 years ago

Spider

Land O Lakes Fl

Verified

Product was very well made. Went together very easy. Just what I was looking for to put my original Corvette valve cover back where they belong

Would Recommend

Yes I would buy this again

4.0

5 years ago

Kento

Chico, Ca.

Verified

These come with no instructions as others had mentioned. It is possible to install these upside down AND the spool type spacers are for support between the head and the adapters. Which seems reasonable but I wish I had recognized that prior to install. I ended up bending the adapter a little before I caught that. I even called Speedway tech prior to install and they didnt know either! So bottom line its ridiculous these didnt have instructions or a picture of how they install. I havent noticed any leaks yet but I may have to buy another set. if they do.

Would Recommend

I would buy this again

5.0

6 years ago

Florida

Verified

Fit like they were suppose to fit! Never dissatisfied with speedway products or customer service.

Would Recommend

Yes

5.0

6 years ago

Rex

West Virginia

Verified

5.7 center bolt to outer small block Chevy fit great

Would Recommend

great product best i have seen for this use .

5.0

6 years ago

jimmy

williamsburg va

Verified

they are a quality part fitment was good adapts center bolt heads to perimeter bolt can be used with roller rockers but may need to clearance near push rods .

Would Recommend

Valve cover adapters

5.0

7 years ago

SE Michigan

Verified

Works with early and late Gen I valve covers

Would Recommend

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Showing 10 of 46 reviews

Questions & Answers

20 Questions • 13 Answers

Sort Questions

I have head studs on my head will these still work

by Elvis

• 7 years ago

1 answer

View Answer

Will my full comp cam 1.6 aluminum roller rockers work with this adapter?

by Terry

• 8 years ago

1 answer

View Answer

Will the vortec valve cover adapters clear scorpion 1.6 rockers?

by Mikey

• 8 years ago

2 answers

View Answers

I think i need to replace the O-ring on the adapter. But the existing oring feels very stiff on the adapter. Do i pry it out to replace with new one.

by Robert

• 8 years ago

1 answer

View Answer

I have a vortec heads in my 350sbc, my valve cover is Screws on the shore, this works?

by Paulo

• 9 years ago

3 answers

View Answers

What Valve cover gasket is best for this adaptor? Also steel or fell pro gaskets?

by Marc

• 9 years ago

1 answer

View Answer

Will the spacer fit my 92 LT-1 corvette engine?

by None

• 10 years ago

1 answer

View Answer

would these adapters fit 56-59 valve covers and an ls1/6?

by Mailman

• 10 years ago

1 answer

View Answer

Well these adapters work on my Chevy Caprice 305 v8 motor

by jess

• 10 years ago

1 answer

View Answer

What are these made of?

by Donnie

• 10 years ago

1 answer

View Answer

Load More Questions

10 of 20 questions shown

Fitment

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1988-1994 Chevy Blazer

Gen 1 L05 Small Block Chevy

1973-1975 Chevy C10

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
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Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
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Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1983 Chevy C10

2-Piece Rear Main Chevy 350
Gen 1 LG3 Small Block Chevy

1984 Chevy C10

Gen 1 L48 Small Block Chevy
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1985 Chevy C10

2-Piece Rear Main Chevy 350
Gen 1 LG3 Small Block Chevy

1986 Chevy C10

1-Piece Rear Main 305 LG4
Gen 1 L05 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1972-1975 Chevy C10 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1976-1982 Chevy C10 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1983 Chevy C10 Suburban

2-Piece Rear Main 305 LG4
2-Piece Rear Main Chevy 350

1984 Chevy C10 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L48 Small Block Chevy

1985 Chevy C10 Suburban

2-Piece Rear Main 305 LG4
2-Piece Rear Main Chevy 350

1986 Chevy C10 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1982-1987 Chevy C15

Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LE9 Small Block Chevy

1988 Chevy C15

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988-1995 Chevy C1500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1996 Chevy C1500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Vortec L30 Small Block Chevy
Vortec L31 Small Block Chevy

1997-1999 Chevy C1500

Gen 1 L05 Small Block Chevy
Vortec L30 Small Block Chevy
Vortec L31 Small Block Chevy

1992-1995 Chevy C1500 Suburban

Gen 1 L05 Small Block Chevy

1996-1999 Chevy C1500 Suburban

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1972-1976 Chevy C20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1977-1982 Chevy C20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1983 Chevy C20

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1984 Chevy C20

2-Piece Rear Main 305 LG4
Gen 1 L48 Small Block Chevy

1985 Chevy C20

2-Piece Rear Main 305 LG4

1986 Chevy C20

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1987 Chevy C20

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1972-1975 Chevy C20 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1976-1978 Chevy C20 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1979-1982 Chevy C20 Suburban

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Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1983 Chevy C20 Suburban

2-Piece Rear Main 305 LG4

1984 Chevy C20 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L82 Small Block Chevy

1985 Chevy C20 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy C20 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988-1995 Chevy C2500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1996 Chevy C2500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Vortec L30 Small Block Chevy
Vortec L31 Small Block Chevy

1997-1998 Chevy C2500

Gen 1 L05 Small Block Chevy
Vortec L30 Small Block Chevy
Vortec L31 Small Block Chevy

1999 Chevy C2500

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1992-1995 Chevy C2500 Suburban

Gen 1 L05 Small Block Chevy

1996-1999 Chevy C2500 Suburban

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1972-1977 Chevy C30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1978-1979 Chevy C30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1980-1982 Chevy C30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1984 Chevy C30

Gen 1 L46 Small Block Chevy

1986 Chevy C30

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1983-1987 Chevy C35

Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1988-1995 Chevy C35

Gen 1 L05 Small Block Chevy

1996-1999 Chevy C35

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1988-1995 Chevy C3500

Gen 1 L05 Small Block Chevy

1996-1999 Chevy C3500

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1973-1975 Chevy Camaro

Gen 1 L48 Small Block Chevy

1976-1982 Chevy Camaro

Gen 1 L48 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1983-1984 Chevy Camaro

2-Piece Rear Main 305 LG4

1985 Chevy Camaro

2-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4
Gen 1 L69 Small Block Chevy

1986 Chevy Camaro

1-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4

1987-1992 Chevy Camaro

1-Piece Rear Main 305 LB9
Gen 1 L98 Small Block Chevy

1996-1999 Chevy Camaro

Vortec L31 Small Block Chevy

1973-1976 Chevy Caprice

Gen 1 L48 Small Block Chevy

1977 Chevy Caprice

Gen 1 L48 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1978-1982 Chevy Caprice

2-Piece Rear Main 305 LG4
Gen 1 L48 Small Block Chevy

1983 Chevy Caprice

2-Piece Rear Main 305 LG4
2-Piece Rear Main Chevy 350

1984 Chevy Caprice

2-Piece Rear Main 305 LG4
Gen 1 L48 Small Block Chevy

1985 Chevy Caprice

2-Piece Rear Main 305 LG4
2-Piece Rear Main Chevy 350

1986 Chevy Caprice

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1987-1993 Chevy Caprice

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1996 Chevy Caprice

Vortec L31 Small Block Chevy

1973 Chevy Chevelle

Gen 1 L48 Small Block Chevy

1973-1974 Chevy Corvette

Gen 1 L48 Small Block Chevy

1980 Chevy Corvette

Gen 1 L48 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1984 Chevy Corvette

Gen 1 L83 Small Block Chevy

1985 Chevy Corvette

2-Piece Rear Main Chevy 350

1986-1991 Chevy Corvette

Gen 1 L98 Small Block Chevy

1996 Chevy Corvette

Vortec L31 Small Block Chevy

1973-1975 Chevy El Camino

Gen 1 L48 Small Block Chevy

1976-1977 Chevy El Camino

Gen 1 L48 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1978-1979 Chevy El Camino

2-Piece Rear Main Chevy 350
Gen 1 LG3 Small Block Chevy

1980-1982 Chevy El Camino

Gen 1 LG3 Small Block Chevy

1983 Chevy El Camino

2-Piece Rear Main 305 LG4
2-Piece Rear Main Chevy 350

1984 Chevy El Camino

2-Piece Rear Main 305 LG4
Gen 1 L81 Small Block Chevy

1985 Chevy El Camino

2-Piece Rear Main 305 LG4

1986 Chevy El Camino

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987 Chevy El Camino

Gen 1 L03 Small Block Chevy

1996-1999 Chevy Express 1500

Gen 1 L05 Small Block Chevy
Vortec L30 Small Block Chevy
Vortec L31 Small Block Chevy

2000-2002 Chevy Express 1500

Vortec L30 Small Block Chevy

1996 Chevy Express 2500

Gen 1 L05 Small Block Chevy
Vortec L30 Small Block Chevy
Vortec L31 Small Block Chevy

1997 Chevy Express 2500

Vortec L30 Small Block Chevy
Vortec L31 Small Block Chevy

1998-1999 Chevy Express 2500

Gen 1 L05 Small Block Chevy
Vortec L30 Small Block Chevy
Vortec L31 Small Block Chevy

2000-2002 Chevy Express 2500

Vortec L30 Small Block Chevy

1996-1999 Chevy Express 3500

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1975-1976 Chevy G10

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1977-1982 Chevy G10

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1983 Chevy G10

2-Piece Rear Main 305 LG4

1984 Chevy G10

2-Piece Rear Main 305 LG4
Gen 1 L82 Small Block Chevy

1985 Chevy G10

2-Piece Rear Main 305 LG4

1986 Chevy G10

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1987-1993 Chevy G10

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1994-1995 Chevy G10

Gen 1 L03 Small Block Chevy

1970 Chevy G10 Van

2-Piece Rear Main Chevy 350

1972-1974 Chevy G10 Van

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1975-1976 Chevy G20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L82 Small Block Chevy

1977-1982 Chevy G20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1983-1985 Chevy G20

2-Piece Rear Main 305 LG4

1986 Chevy G20

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1987-1995 Chevy G20

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1972 Chevy G20 Van

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1973-1974 Chevy G20 Van

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L82 Small Block Chevy

1975-1977 Chevy G30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1978-1979 Chevy G30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1980-1981 Chevy G30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1982 Chevy G30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1985 Chevy G30

2-Piece Rear Main 305 LG4

1986-1995 Chevy G30

Gen 1 L05 Small Block Chevy

1996 Chevy G30

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1970 Chevy G30 Van

2-Piece Rear Main Chevy 350

1972-1974 Chevy G30 Van

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1973-1976 Chevy Impala

Gen 1 L48 Small Block Chevy

1977-1982 Chevy Impala

Gen 1 L48 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1983 Chevy Impala

2-Piece Rear Main 305 LG4
2-Piece Rear Main Chevy 350

1984 Chevy Impala

2-Piece Rear Main 305 LG4

1985 Chevy Impala

2-Piece Rear Main 305 LG4
2-Piece Rear Main Chevy 350

1996 Chevy Impala

Vortec L31 Small Block Chevy

1972-1976 Chevy K10

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1977-1979 Chevy K10

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1980 Chevy K10

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1981-1982 Chevy K10

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1983-1985 Chevy K10

2-Piece Rear Main 305 LG4

1986 Chevy K10

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1972-1975 Chevy K10 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1976-1982 Chevy K10 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1983-1985 Chevy K10 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy K10 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988-1995 Chevy K1500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1996-1999 Chevy K1500

Gen 1 L05 Small Block Chevy
Vortec L30 Small Block Chevy
Vortec L31 Small Block Chevy

1992-1995 Chevy K1500 Suburban

Gen 1 L05 Small Block Chevy

1996-1999 Chevy K1500 Suburban

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1972-1976 Chevy K20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1977-1978 Chevy K20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1979 Chevy K20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1980 Chevy K20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1981-1982 Chevy K20

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1985 Chevy K20

2-Piece Rear Main 305 LG4

1986 Chevy K20

Gen 1 L05 Small Block Chevy

1972-1976 Chevy K20 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1977-1978 Chevy K20 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1979-1982 Chevy K20 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1985 Chevy K20 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy K20 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988-1995 Chevy K2500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1996 Chevy K2500

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1997-1998 Chevy K2500

Gen 1 L05 Small Block Chevy
Vortec L30 Small Block Chevy
Vortec L31 Small Block Chevy

1999 Chevy K2500

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1992-1995 Chevy K2500 Suburban

Gen 1 L05 Small Block Chevy

1996-1999 Chevy K2500 Suburban

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1972-1974 Chevy K30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1977-1982 Chevy K30

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1986 Chevy K30

Gen 1 L05 Small Block Chevy

1988-1995 Chevy K3500

Gen 1 L05 Small Block Chevy

1996-1999 Chevy K3500

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1970-1974 Chevy K5 Blazer

2-Piece Rear Main Chevy 350

1975-1976 Chevy K5 Blazer

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1977-1981 Chevy K5 Blazer

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1982 Chevy K5 Blazer

2-Piece Rear Main 305 LG4
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1983 Chevy K5 Blazer

2-Piece Rear Main 305 LG4
2-Piece Rear Main Chevy 350

1984 Chevy K5 Blazer

2-Piece Rear Main 305 LG4
Gen 1 L48 Small Block Chevy

1985 Chevy K5 Blazer

2-Piece Rear Main 305 LG4
2-Piece Rear Main Chevy 350

1986 Chevy K5 Blazer

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1973-1975 Chevy Laguna

Gen 1 L48 Small Block Chevy

1976 Chevy Laguna

2-Piece Rear Main Chevy 350
Gen 1 LG3 Small Block Chevy

1973-1975 Chevy Malibu

Gen 1 L48 Small Block Chevy

1976-1982 Chevy Malibu

Gen 1 L48 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1983 Chevy Malibu

2-Piece Rear Main 305 LG4

1970-1971 Chevy Monte Carlo

2-Piece Rear Main Chevy 350

1973-1975 Chevy Monte Carlo

2-Piece Rear Main Chevy 350

1976-1977 Chevy Monte Carlo

Gen 1 L48 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1978-1981 Chevy Monte Carlo

2-Piece Rear Main 305 LG4

1982-1983 Chevy Monte Carlo

2-Piece Rear Main 305 LG4
2-Piece Rear Main Chevy 350

1984-1985 Chevy Monte Carlo

2-Piece Rear Main 305 LG4

1986 Chevy Monte Carlo

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy

1987-1988 Chevy Monte Carlo

Gen 1 L03 Small Block Chevy

1975 Chevy Monza

Gen 1 L48 Small Block Chevy

1976-1979 Chevy Monza

Gen 1 LG3 Small Block Chevy

1973-1974 Chevy Nova

Gen 1 L48 Small Block Chevy

1975 Chevy Nova

2-Piece Rear Main Chevy 350

1976-1979 Chevy Nova

Gen 1 L48 Small Block Chevy
Gen 1 LG3 Small Block Chevy

1975-1979 Chevy P30

Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1980-1983 Chevy P30

2-Piece Rear Main Chevy 350

1985 Chevy P30

2-Piece Rear Main Chevy 350

1986-1995 Chevy P30

Gen 1 L05 Small Block Chevy

1996-1999 Chevy P30

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1970 Chevy P30 Van

2-Piece Rear Main Chevy 350

1972 Chevy P30 Van

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1973-1974 Chevy P30 Van

Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy

1987 Chevy R10

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1987 Chevy R10 Suburban

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988 Chevy R10 Suburban

Gen 1 L05 Small Block Chevy

1989-1991 Chevy R1500 Suburban

Gen 1 L05 Small Block Chevy

1987 Chevy R20

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988 Chevy R20

Gen 1 L05 Small Block Chevy

1987-1988 Chevy R20 Suburban

Gen 1 L05 Small Block Chevy

1995 Chevy R25

Gen 1 L05 Small Block Chevy

1996-1999 Chevy R25

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1989 Chevy R2500

Gen 1 L05 Small Block Chevy

1989-1991 Chevy R2500 Suburban

Gen 1 L05 Small Block Chevy

1987-1988 Chevy R30

Gen 1 L05 Small Block Chevy

1989-1991 Chevy R3500

Gen 1 L05 Small Block Chevy

1995 Chevy Silverado

Gen 1 L05 Small Block Chevy

1996-1999 Chevy Silverado

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1987-1994 Chevy Suburban

Gen 1 L05 Small Block Chevy

1995 Chevy Suburban 1500

Gen 1 L05 Small Block Chevy

1996-1999 Chevy Suburban 1500

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1995 Chevy Tahoe

Gen 1 L05 Small Block Chevy

1996-1999 Chevy Tahoe

Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1987 Chevy V10

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1987-1988 Chevy V10 Suburban

Gen 1 L05 Small Block Chevy

1989-1991 Chevy V1500 Suburban

Gen 1 L05 Small Block Chevy

1987 Chevy V20

Gen 1 L05 Small Block Chevy

1987-1988 Chevy V20 Suburban

Gen 1 L05 Small Block Chevy

1989-1991 Chevy V2500 Suburban

Gen 1 L05 Small Block Chevy

1987-1988 Chevy V30

Gen 1 L05 Small Block Chevy

1989-1991 Chevy V3500

Gen 1 L05 Small Block Chevy

1963-1965 GMC 1000 Series

Gen 1 LE9 Small Block Chevy

1967 GMC C15/C1500 Suburban

2-Piece Rear Main Chevy 350

1980-1984 GMC C1500

2-Piece Rear Main Chevy 350

1998-1999 GMC C1500

Vortec L31 Small Block Chevy

1980-1986 GMC C1500 Suburban

2-Piece Rear Main Chevy 350

1992-1999 GMC C1500 Suburban

Vortec L31 Small Block Chevy

1967-1972 GMC C25/C2500 Pickup

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1972 GMC C25/C2500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC C35/C3500 Pickup

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1978-1987 GMC Caballero

2-Piece Rear Main Chevy 350

1975-1978 GMC G15

2-Piece Rear Main Chevy 350

1967-1974 GMC G15/G1500 Van

2-Piece Rear Main Chevy 350

1979-1986 GMC G1500

2-Piece Rear Main Chevy 350

1987-1995 GMC G1500

Gen 1 L05 Small Block Chevy

1975-1978 GMC G25

2-Piece Rear Main Chevy 350

1967-1974 GMC G25/G2500 Van

2-Piece Rear Main Chevy 350

1979-1986 GMC G2500

2-Piece Rear Main Chevy 350

1987-1995 GMC G2500

Gen 1 L05 Small Block Chevy

1975-1978 GMC G35

2-Piece Rear Main Chevy 350

1967 GMC G35/G3500 Van

2-Piece Rear Main Chevy 350

1970-1974 GMC G35/G3500 Van

2-Piece Rear Main Chevy 350

1979-1986 GMC G3500

2-Piece Rear Main Chevy 350

1987-1994 GMC G3500

Gen 1 L05 Small Block Chevy

1995-1996 GMC G3500

Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1970-1973 GMC Jimmy

Gen 1 LE9 Small Block Chevy

1974-1977 GMC Jimmy

2-Piece Rear Main Chevy 350

1978-1982 GMC Jimmy

Gen 1 LE9 Small Block Chevy

1983-1984 GMC Jimmy

2-Piece Rear Main Chevy 350

1986 GMC Jimmy

Gen 1 L05 Small Block Chevy

1987 GMC Jimmy

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1988-1990 GMC Jimmy

Gen 1 L05 Small Block Chevy

1975-1978 GMC K15

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1975-1978 GMC K15 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC K15/K1500 Pickup

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC K15/K1500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1979-1984 GMC K1500

2-Piece Rear Main Chevy 350

1998-1999 GMC K1500

Vortec L31 Small Block Chevy

1979-1980 GMC K1500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1981-1986 GMC K1500 Suburban

Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1992-1999 GMC K1500 Suburban

Vortec L31 Small Block Chevy

1975-1978 GMC K25

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1975-1978 GMC K25 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC K25/K2500 Pickup

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC K25/K2500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1979-1984 GMC K2500

2-Piece Rear Main Chevy 350

1986 GMC K2500

Gen 1 L05 Small Block Chevy

1996-2000 GMC K2500

Vortec L31 Small Block Chevy

1979-1986 GMC K2500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1992-1993 GMC K2500 Suburban

Gen 1 L05 Small Block Chevy

1994-1999 GMC K2500 Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1967-1974 GMC K35/K3500 Pickup

Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy

1987 GMC R1500 Suburban

Vortec L31 Small Block Chevy

1988-1991 GMC R1500 Suburban

Gen 1 L98 Small Block Chevy

1996-2000 GMC Savana 1500

Vortec L31 Small Block Chevy

1973-1977 GMC Sprint

Gen 1 LM1 Small Block Chevy

1960-1966 GMC Suburban

Gen 1 L69 Small Block Chevy

1967 GMC Suburban

Gen 1 L46 Small Block Chevy

1987-1991 GMC V1500 Suburban

350 Chevy Small Block V8
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1987 GMC V2500

350 Chevy Small Block V8
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1987-1991 GMC V2500 Suburban

350 Chevy Small Block V8
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1987-1991 GMC V3500

350 Chevy Small Block V8

1992-2011 GMC Yukon

Vortec L31 Small Block Chevy

1975-1977 Oldsmobile Starfire

305 Chevy Small Block V8

1985 Pontiac Firebird

2-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4
Gen 1 L69 Small Block Chevy