Chevy SBC V8 Bare Aluminum Camel Double Hump 461 Cylinder Head

#9103782461

Chevy SBC V8 Bare Aluminum Camel Double Hump 461 Cylinder Head

Name: Chevy SBC V8 Bare Aluminum Camel Double Hump 461 Cylinder Head
Brand: Speedway Motors
SKU: 9103782461
Price: 498.99 USD
Availability: InStock
Rating: 4.7 (3 reviews)

3 Reviews

3 Questions

Features 180cc intake runner, 62cc exhaust runner, valve seats machined for 2.02" intake/1.60" exhaust valves, 1.560" max spring pocket diameter
Cast from premium quality aluminum that shaves 40 lbs. off the nose of your car vs. heavy iron heads
No accessory bolt holes, just like the original heads

Type:

Cylinder Head - Bare

Cylinder Head - Complete Cylinder Head (Pair) Top End Kit

$498.99

/each

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Product Summary

Bare Cylinder Head Style, Aluminum, Natural

Features 180cc intake runner, 62cc exhaust runner, valve seats machined for 2.02" intake/1.60" exhaust valves, 1.560" max spring pocket diameter
Cast from premium quality aluminum that shaves 40 lbs. off the nose of your car vs. heavy iron heads
No accessory bolt holes, just like the original heads
Improved port/chamber shape for better performance with the 3-angle machined valve job that promotes better flow, especially at low-to-mid lifts
Designed for 4" bore 1962-86 small block engines (302/327/350)

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Key Specs

Cylinder Head Style	Bare
Material Type	Aluminum
Finish	Natural
Combustion Chamber Volume	64cc
Intake Runner Volume	180cc

See more specs

Need To Know

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Installation Details

Installation Tips

Stock stamped steel rocker arms will not clear 1.437” diameter valve springs on these heads. Must use aftermarket roller tip or full roller rocker arms if using large diameter springs. We recommend aluminum or stainless steel full roller rockers.
Heads feature valve cover rails that are raised 3/8” so you can use roller rockers with original '59-up Corvette valve covers (note - some factory A/C brackets may have interference issues). Rocker arm studs should be torqued to 45 ft.-lbs.
Intake port measures 2-1/16” x 1-1/8” which works with Fel-Pro 1205 style gaskets. Exhaust ports are square and work with Fel-Pro 1404 style gaskets.
Champion spark plugs (14mm thread, 5/8" hex, flat gasket seat, .750" reach) are what we recommend as a starting point. This is a straight plug head (not angled plug). Ignition timing should be between 35 to 38 degrees total. Set the timing with the vacuum advance hose disconnected and rev the engine up until the mechanical advance is fully in, then set it at 35 degrees to start with. You can experiment with more timing later to see if the engine runs better at closer to 38 degrees, but we don't recommend exceeding 38 degrees on most applications.
Valve guides are machined for modern positive stop stem seals. Measures .540” OD where the seal is pressed on.
Heads are not drilled for steam holes that are required on SBC 400 engines.
Recommend head gasket for 4.00” bore engines is the Fel-Pro 1003 style gasket.
We recommend these head bolts and washers. Torque the head bolts to their final value in three steps. First step is to go to 50 ft. lbs. The second step then goes to 65 ft. lbs. The third step take the upper bolts to 80 ft. lbs and the lower row to 75 ft. lbs. Use thread sealant with PTFE on the threads.
If running domed /pop up piston you will need to check for clearance.

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Tech Support - Opens at NaNpm (UTC)

Speedway Motors 9103782461 Details

Visually similar to GM casting #3782461, which first appeared on the 1961 Corvette “fuelie”
No accessory bolt holes, just like the original heads
Heads are sold EACH and come bare (no springs, retainers, rocker studs)
Aluminum heads shave 40 lbs. off the nose of your car vs. original 461 iron heads
Improved port/chamber shape for better performance and efficiency
Standard port location for use with most intake and exhaust manifolds
180cc intake port volume (factory 461 casting was 160cc)
62cc exhaust port volume (same as factory 461)
64cc fast-burn combustion chambers deliver big power gains vs. 461 castings
Combustion chamber volume number was calculated using an Autolite 3934 spark plug
Valve seats machined for 2.02” intake/1.60” exhaust valves (most 461 castings were 1.94/1.50)
3-angle valve job promotes better flow, especially at low-to-mid lifts
Intake flows 232 CFM @ .500” lift, exhaust flows 173 CFM @ .500” lift
Flow numbers were measured with a SAENZ 600 bench, 4.030 bore fixture, 1205-style intake fixture, and 28 inches of water
Exhaust port gained 20 cfm above advertised number by adding a 1-5/8 pipe (header), a larger 1-7/8 pipe flowed the same
Accepts both perimeter and center bolt valve covers
1.560” max spring pocket diameter gives you many valve spring options
High nickel powdered metal valve seats provide optimum heat transfer and wear characteristics
Manganese bronze valve guides reduce friction
Valve guides are compatible with all common valve materials and fuels
Accepts modern positive stop valve stem seals for better oil control
Machined for 3/8” screw-in rocker arm studs and guide plates (not included)
Blocked exhaust heat riser manifold crossover port
3/8-inch NPT coolant temperature probe port
Designed for 1962-1986 small block engines (302/327/350)
Heads will fit on a .030-inch or larger bored out 283 block (2.02/1.60 valves) when 350 head gaskets are used
Consider our assembled heads for cams under .550" lift

An Authentic Aluminum Reproduction of Chevy’s Camel Hump “Fuelie” Heads

Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum! Also known as "fuelie" heads, the 3782461 castings were used on many legendary Chevrolets from 1961-1967. Our all-new cylinder head casting is a modern take with all the old-school looks you desire out of a reproduction camel hump head. Features like fast-burn combustion chambers, high-velocity ports, large diameter valve springs, and positive stop valve seals bring the vaunted camel hump heads into the 21st Century.

Save yourself the hassles of hunting down original GM 3782461, 3782461X, or 3890462 castings, only to find out they can't be saved. By now, most original 461 heads have had multiple valve jobs and milled decks, which means buying a set is a gamble. Plus, when considering all the costs involved in machining them to accept modern valvetrain components, our all-new castings are a very cost-effective alternative that puts more money back in your engine build budget.

GM produced several versions of the Chevy camel back heads originally; however, these are visual copies of the very first double hump heads, often referred to as "fuelies" because of their use on Rochester Ram-Jet equipped Corvettes. As such, these heads will perfectly complement your nostalgic hot rod build or restomod muscle car, all the way down to the textured as-cast finish and cast parting line across the exhaust port side, just like the original heads. Plus, the raised valve cover rail means that full roller rocker arms will fit underneath original Corvette valve covers ('59-up covers). Our camel hump heads accept both perimeter bolt and center bolt valve covers. With a coat of Chevy Orange paint, you'll have everyone convinced you're running an original set of 461 double hump heads.

No Accessory Bolt Holes, Just Like the Originals, To Detract From Period Looks

Take note that these heads have no accessory bolt holes for the front drive (just like original 461s). There are a couple options to mount your alternator/generator: 1) you can rely on accessory mounts off the block or water pump, or 2) pair these heads with our "rams horn" exhaust manifolds. These 2-1/2" outlet manifolds feature built-in mounts for your generator/alternator and are correct for '62-'63 Corvettes. To utilize this method, you will also need both our alternator mounting bracket and alternator adjuster bracket to mount the generator/alternator. When going this route, you may also be able to use a lower power steering pump bracket such as our Saginaw bracket or Type 2 bracket, depending on your pump and frame/steering box clearance.

The original 3782461 castings delivered well over 1.1 hp/ci on many legendary Chevy models throughout the early ‘60s, which was a significant engineering achievement for the time. Highlights include the '61 Corvette 283/315hp and '62 Corvette 327/360hp (both with Rochester fuel injection and "Duntov" camshaft), the '63 Chevy 327/340hp, the '64 Chevy 327/365hp L76 and 327/375hp L84 (both with the "30-30" camshaft), and the '65 Chevy 327/350hp L79. With the undercover features included in these bare heads, you can expect even more performance out of your 283/302/327/350/383 SBC. If you're pairing these heads with a flat tappet camshaft under .550" lift, consider our assembled heads.

Guides & Documents

Cylinder Heads Technical Information (9103782461)

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 Prop 65

CARB warning

Speedway Motors 9103782461 Specifications

KEY SPECS
MFG. Part #	9103782461
Brand	Speedway Motors
Cylinder Head Style	Bare
Material Type	Aluminum
Finish	Natural
Combustion Chamber Volume	64cc
Intake Runner Volume	180cc

GENERAL
Exhaust Runner Volume	62cc
Combustion Chamber Volume Range	60cc - 69cc
Intake Runner Volume Range	180cc - 189cc
Exhaust Runner Volume Range	60cc - 69cc
Combustion Chamber Style	Heart
CNC-Machined Runners	No
CNC-Machined Combustion Chamber	No
Spark Plug Style	Straight
Intake Port Shape	Rectangle
Intake Port Location	Standard
Exhaust Port Shape	Square
Exhaust Port Location	Standard
Intake Valve Diameter	2.02"
Intake Valves Included	No
Intake Valve Angle	23 °
Exhaust Valve Diameter	1.6"
Exhaust Valves Included	No
Exhaust Valve Angle	23 °
Machined for O-Ring	No
Valve Seat Machine Style	3-angle
Valve Seats Machined	Yes
Valve Seat Material	Powdered Metal
Valve Stem Seals Included	No
Valve Stem Seal Type	Positive Stop
Valve Guides Included	Yes
Valve Guide Material	Manganese Bronze
Retainers Included	No
Guideplate Pushrod Size	0.312"
Rocker Arms Included	No
Rocker Arm Studs Included	No
Stud Diameter	1.375"
Rocker Arm Nuts Included	No
Oiling Style	Through Pushrod
Heat Crossover	No
Steam Holes Drilled	No
Accessory Bolt Holes Drilled	No
Valve Cover Mounting Style	Center and Perimeter Bolt
Notes	Bare head weighs 19.6 lbs. each.
Sold in Quantity	Each

Ratings & Reviews

4.7

3 Reviews

Overall Assessment

Customers highly recommend the SBC 461 CAMEL HUMP Aluminum heads, lauding their superior power increase compared to the factory GM Cast Iron DHC 461 heads. The heads have an impressive visual appeal, creating anticipation for top-notch performance once installed. Their high-quality material and promising usability set them apart from the competition.

Write A Review

4.7

3 reviews

Filter by Ratings

Sort Reviews

So happy I got these

5.0

2 years ago

Uptown K

North of Harrisburg. PA

Verified

A few small burrs/lines I will dress up. Spark plug holes on chamber side has some edges that may cause 'hot spots', so i will smooth this out. Compared these to a set of hi-po 2.02's my Son has and these are the same and certain features are better. These are great castings. I will add undercut valves and meaty springs.

Would Recommend

I would buy the SBC 461 CAMEL HUMP Aluminum heads again.

5.0

5 years ago

Papa Smurf

2 Paw's Michigan

Verified

Much more HP from the Aluminum DHC 461 Heads compared to the factory GM Cast Iron DHC 461 Heads.

Would Recommend

SBC CYLINDER HEADS

4.0

5 years ago

57 HEAVEN

Chicago

Verified

Product looks fantastic. Rated them a 4 star because I have not had a chance to install them yet. If they perform up to the way they look I would give that rating a five star.

Showing 3 of 3 reviews

Questions & Answers

3 Questions • 3 Answers

Sort Questions

Will stock length push rods work with these heads?

by Richie

• 4 months ago

1 answer

View Answer

What is the deck thickness?

by Rob

• a year ago

1 answer

View Answer

Could you safely mill this .024 to achieve 60cc combustion chamber?

by Quentin

• 3 years ago

1 answer

View Answer

3 of 3 questions shown

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1992-1995 Chevy K1500 Suburban

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1996-1999 Chevy K1500 Suburban

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1972-1982 Chevy K20

Gen 1 L46 Small Block Chevy
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1986 Chevy K20

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1986 Chevy K20 Suburban

Gen 1 L05 Small Block Chevy

1988-1995 Chevy K2500

Gen 1 L05 Small Block Chevy

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Gen 1 L05 Small Block Chevy
Vortec L31 Small Block Chevy

1992-1995 Chevy K2500 Suburban

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1996-1999 Chevy K2500 Suburban

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1972-1974 Chevy K30

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1977-1982 Chevy K30

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1986 Chevy K30

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1988-1995 Chevy K3500

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1983 Chevy K5 Blazer

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1984 Chevy K5 Blazer

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1985 Chevy K5 Blazer

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1986 Chevy K5 Blazer

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1970-1971 Chevy Monte Carlo

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1973-1975 Chevy Monte Carlo

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1976-1977 Chevy Monte Carlo

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1982-1983 Chevy Monte Carlo

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1975 Chevy Monza

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1973-1974 Chevy Nova

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1975 Chevy Nova

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1976-1979 Chevy Nova

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1975-1979 Chevy P30

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1980-1983 Chevy P30

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1985 Chevy P30

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1986-1995 Chevy P30

Gen 1 L05 Small Block Chevy

1996-1999 Chevy P30

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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
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1987 Chevy R10

Gen 1 L05 Small Block Chevy

1987-1988 Chevy R10 Suburban

Gen 1 L05 Small Block Chevy

1989-1991 Chevy R1500 Suburban

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1987-1988 Chevy R20

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1989 Chevy R2500

Gen 1 L05 Small Block Chevy

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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
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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 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

1967-1968 GMC C15/C1500 Pickup

327 Chevy Small Block V8

1967 GMC C15/C1500 Suburban

2-Piece Rear Main Chevy 350

1968 GMC C15/C1500 Suburban

327 Chevy Small Block V8

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

1963-1966 GMC G1000 Series

327 Chevy Small Block V8

1975-1978 GMC G15

2-Piece Rear Main Chevy 350

1967-1974 GMC G15/G1500 Van

2-Piece Rear Main Chevy 350

1964-1966 GMC G1500

327 Chevy Small Block V8

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

1964-1966 GMC I1000

327 Chevy Small Block V8

1965-1966 GMC I1500

327 Chevy Small Block V8

1965-1966 GMC I2500

327 Chevy Small Block V8

1966 GMC I3500

327 Chevy Small Block V8

1974-1977 GMC Jimmy

2-Piece Rear Main Chevy 350

1983-1984 GMC Jimmy

2-Piece Rear Main Chevy 350

1986 GMC Jimmy

Gen 1 L05 Small Block Chevy

1987 GMC Jimmy

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

1988-1990 GMC Jimmy

Gen 1 L05 Small Block Chevy

1966 GMC K1000

327 Chevy Small Block V8

1966 GMC K1000 Pickup

327 Chevy Small Block V8

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

1966 GMC K15/K1500 Pickup

327 Chevy Small Block V8

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 L76 Small Block Chevy

1967 GMC Suburban

Gen 1 L46 Small Block Chevy
Gen 1 L76 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