Speedway 383 Chevy Crankshaft, Two-Piece Main

#91515383

Speedway 383 Chevy Crankshaft, Two-Piece Main

Name: Speedway 383 Chevy Crankshaft, Two-Piece Main
Brand: Speedway Motors
SKU: 91515383
Price: 318.99 USD
Availability: InStock
Rating: 4.6 (14 reviews)

14 Reviews

24 Questions

New high tech, fatigue resistant 80-60-06 cast steel crank with near forged endurance
Two-piece rear main

Type:

383

350400

$318.99

/each

In Stock

Quantity

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Product Summary

3.750" Stroke, 350 mains Main Journal Style

New high tech, fatigue resistant 80-60-06 cast steel crank with near forged endurance
Two-piece rear main

See more details

Key Specs

Stroke	3.750"
Main Journal Style	350 mains
Crankshaft Material	Cast Steel
Main Journal Diameter	2.448"
Rod Journal Diameter	2.100"

See more specs

Need To Know

Need help?

855.313.9176

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Quick and Easy Returns

Return Policy

Speedway Motors 91515383 Details

New, hi-tech fatigue resistant 80-60-06 cast steel crank with near forged steel endurance. All journals are ground and polished to exacting tolerances. Superior quality 383 stroker crank at a stock replacement price.

For blocks with 2-piece rear main seals. External balance.

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 91515383 Specifications

KEY SPECS
MFG. Part #	91515383
Brand	Speedway Motors
Stroke	3.750"
Main Journal Style	350 mains
Crankshaft Material	Cast Steel
Main Journal Diameter	2.448"
Rod Journal Diameter	2.100"
Rear Main Seal Style	2-piece
Weight	50 lbs.

GENERAL
Sold in Quantity	Each

Ratings & Reviews

4.6

14 Reviews

Overall Assessment

Customers praised the product for its outstanding quality, precision, and value for money, with many confirming its suitability for their engine builds. Reviews lauded specific features such as the perfect machining of all journals and the clearances being spot on, underscoring the product's excellence in terms of fit and function. Notably, users stated that the product lives up to its reputation and surpasses competitors in terms of quality, even those at higher price points. Special mention is given to the aesthetics of the crank, adding value to the purchase. Despite missing features like bolts, the positive consensus is the crank's superiority compared to similar items.

Write A Review

4.6

14 reviews

Most Liked Positive Review

5.0

very nice crank for the money

it's a great looking crank. it has all the markings of a scat crank without the scat logo. sat it side by side with a scat at the machine shop & it is a scat crank for $50.00 less money. it measured out perfect from front to back. i couldn't ask for any better & speedways shipping is fantastic. although, ups did leave it out on my porch in the rain. not speedways fault, but really ups?

Most Liked Negative Review

3.0

Good for the money..

This is going in a DD chevy p/u but sent it off with all other parts to get balanced.. Man they had to take away a lot of material to get balanced down.. We will see how it goes.

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Sort Reviews

I was very satisfied

5.0

a year ago

N/A

Morgan City LA

Verified

I have no complaints so far

Would Recommend

Great product and value

4.0

a year ago

Turbosully

Granite Falls WA

Verified

Still fitting to the bock but the machine work is nice. It's clean and ready to install out of the box.

Would Recommend

Yes

4.0

3 years ago

Mitch

Oregon

Verified

Great looking Ended up not using and going back to a 3.48 inch stroke crank

Would Recommend

Quality product, buy with confidence

5.0

3 years ago

70 C20 reddnecckk

Ontario Ca

Verified

Brand spankin' new. All journals machined to perfection. Has the name scat on it, so has a reputation as well. As a mechanic, product meets all my expectations. Better than a shot in the dark at Pomona swap.

Would Recommend

Yes

4.0

4 years ago

Freakenfred

Port richey fl.

Verified

The harmonic balancer didn't come with bolts. I don't know what size.

Would Recommend

No block clear ending needed on mine!

5.0

4 years ago

Bluegrass express

Pikeville, Kentucky

Amazing clearances, the block was perfect in terms of clearance and quality I will be buying another block specifically to use this crank again

Would Recommend

Above expectations

5.0

5 years ago

Gmtekman

Summitville Indiana

Verified

Beautiful

Would Recommend

great crank at the best price

5.0

7 years ago

nitro

greeneville tn

Verified

very nice crank, even had scat cast onto it. save the money & buy speedways crank. i put speedway's windage tray on it too.

Would Recommend

Great piece

5.0

7 years ago

Nova builder

Owensboro KY

Verified

Great piece, checked clearance on every main and rod. They were spot on.

Would Recommend

I will buy again

5.0

8 years ago

Pig pen

North Dakota

Verified

Fit and function were excellent

Would Recommend

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Showing 10 of 14 reviews

Questions & Answers

24 Questions • 12 Answers

Sort Questions

Is this crankshaft drilled and bored for a manual transmission pilot bushing?

by Brian

• 2 years ago

1 answer

View Answer

can this crank be ran with 6" rods & flat top pistons? if so,what are the advantages of the 6" rod over the 5.7" rods?

by cramer

• 8 years ago

1 answer

View Answer

I run dirt late model with a bert transmission, we use a gear reduction flywheel I ordered the 383 crank along with the balance plate. My question is do I need to run the balance plate with such a small flywheel?

by Boogeyman

• 8 years ago

1 answer

View Answer

I ordered 383 kit but it's says 5.7 on crank I'm going with 6in rods will this be a problem

by Andrew256

• 8 years ago

1 answer

View Answer

What is the Bob weight?

by Jason

• 8 years ago

2 answers

View Answers

Will this crank work with 400 sbc 5.565 rods in a 350 block with 350 pistons, or are the counterweights to big to clear the pistons? Thanks.

by WAYNE

• 8 years ago

1 answer

View Answer

Hi, I want to use your external Balance 383 crankshaft in a 6 inch rods internal Balance 383 motors. Any problems doing that?

by James

• 8 years ago

2 answers

View Answers

Is it Internal or external balanced?

by Jason

• 8 years ago

1 answer

View Answer

So in this application I have a t5 manual 5 speed transmission I'm my 87 iroc how do I still need flywheel ? Also what kind of things can I do to compensate for the bigger stroke?

by 377iroc

• 8 years ago

1 answer

View Answer

Fits 350 block 5.7 rods and what Pistons

by Steve

• 8 years ago

1 answer

View Answer

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Fitment

1973-1975 Chevy Bel Air

Gen 1 L48 Small Block Chevy

1972 Chevy Blazer

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

1973-1974 Chevy 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

1973-1982 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
Gen 1 L82 Small Block Chevy

1983 Chevy C10

2-Piece Rear Main Chevy 350

1984 Chevy C10

Gen 1 L48 Small Block Chevy

1985 Chevy C10

2-Piece Rear Main Chevy 350

1972-1982 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

1983 Chevy C10 Suburban

2-Piece Rear Main Chevy 350

1984 Chevy C10 Suburban

Gen 1 L48 Small Block Chevy

1985 Chevy C10 Suburban

2-Piece Rear Main Chevy 350

1982-1987 Chevy C15

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

1972-1982 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

1984 Chevy C20

Gen 1 L48 Small Block Chevy

1972-1982 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

1984 Chevy C20 Suburban

Gen 1 L82 Small Block Chevy

1972-1982 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

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

1973-1982 Chevy Camaro

Gen 1 L48 Small Block Chevy

1973-1982 Chevy Caprice

Gen 1 L48 Small Block Chevy

1983 Chevy Caprice

2-Piece Rear Main Chevy 350

1984 Chevy Caprice

Gen 1 L48 Small Block Chevy

1985 Chevy Caprice

2-Piece Rear Main Chevy 350

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

1984 Chevy Corvette

Gen 1 L83 Small Block Chevy

1985 Chevy Corvette

2-Piece Rear Main Chevy 350

1973-1977 Chevy El Camino

Gen 1 L48 Small Block Chevy

1978-1979 Chevy El Camino

2-Piece Rear Main Chevy 350

1983 Chevy El Camino

2-Piece Rear Main Chevy 350

1984 Chevy El Camino

Gen 1 L81 Small Block Chevy

1975-1982 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

1984 Chevy G10

Gen 1 L82 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

1975-1982 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

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

1975-1982 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

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

1973-1982 Chevy Impala

Gen 1 L48 Small Block Chevy

1983 Chevy Impala

2-Piece Rear Main Chevy 350

1985 Chevy Impala

2-Piece Rear Main Chevy 350

1972-1982 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

1972-1982 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

1972-1982 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

1972-1982 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

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

1970-1974 Chevy K5 Blazer

2-Piece Rear Main Chevy 350

1975-1982 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

1983 Chevy K5 Blazer

2-Piece Rear Main Chevy 350

1984 Chevy K5 Blazer

Gen 1 L48 Small Block Chevy

1985 Chevy K5 Blazer

2-Piece Rear Main Chevy 350

1973-1975 Chevy Laguna

Gen 1 L48 Small Block Chevy

1976 Chevy Laguna

2-Piece Rear Main Chevy 350

1973-1982 Chevy Malibu

Gen 1 L48 Small Block Chevy

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

1982-1983 Chevy Monte Carlo

2-Piece Rear Main Chevy 350

1975 Chevy Monza

Gen 1 L48 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

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

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

1967 GMC C15/C1500 Suburban

2-Piece Rear Main Chevy 350

1980-1984 GMC C1500

2-Piece Rear Main Chevy 350

1980-1986 GMC C1500 Suburban

2-Piece Rear Main Chevy 350

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

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

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

1974-1977 GMC Jimmy

2-Piece Rear Main Chevy 350

1983-1984 GMC Jimmy

2-Piece Rear Main Chevy 350

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

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

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

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

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

1973-1977 GMC Sprint

Gen 1 LM1 Small Block Chevy

1967 GMC Suburban

Gen 1 L46 Small Block Chevy

1987-1991 GMC V1500 Suburban

350 Chevy Small Block V8

1987 GMC V2500

350 Chevy Small Block V8

1987-1991 GMC V2500 Suburban

350 Chevy Small Block V8

1987-1991 GMC V3500

350 Chevy Small Block V8