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#91515550
Scat 4-350-3750-5700 383 Chevy Crankshaft, 3.75 Stroke
- Designed and engineered at SCAT and features an internal balance
- Has straight shot & chamfered oil holes
- Features lightening holes in all rod throws
$893.99
/each
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Product Summary
3.75" Stroke, Forged 4340 Steel Crankshaft Material
- Designed and engineered at SCAT and features an internal balance
- Has straight shot & chamfered oil holes
- Features lightening holes in all rod throws
- Designed specifically for 2-piece rear main blocks
- It is nitride hardened for superior wear resistance
Key Specs
| Stroke | 3.75" |
| Crankshaft Material | Forged 4340 Steel |
| Rod Journal Diameter | 2.100" |
| Rear Main Seal Style | 2-piece |
| Engine Balance | Internal |
Need To Know
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Return PolicyScat 4-350-3750-5700 Details
Scat 4-350-3750-5700 Details
As you make more and more power it becomes more important to use quality parts. These Scat 4340 forged steel cranks will help keep your motor alive.
- For 2-piece rear main blocks
- Internal balanced
- 2.100" rod pin
- 52 lbs.
-
Straight shot & chamfered oil holes
-
Nitride hardened for superior wear reisistance
-
Lightening holes in all rod throws
-
Large radius on all journals
-
Heat treated, shot peened
-
Designed at SCAT
-
Engineered at SCAT
- Inspected & micropolished at SCAT
Note: If you are going to run 915-15550 in a sprint car motor, you must have the crank flange turned down prior to balancing the crank to allow it to go through the motor plate.
Item Details
3.75" stroke - 350 mains
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
Scat 4-350-3750-5700 Specifications
Scat 4-350-3750-5700 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 4-350-3750-5700 |
| Brand | Scat |
| Stroke | 3.75" |
| Crankshaft Material | Forged 4340 Steel |
| Rod Journal Diameter | 2.100" |
| Rear Main Seal Style | 2-piece |
| Engine Balance | Internal |
| Weight | 52.0 lbs. |
| GENERAL | |
| GTIN Code | 846091011637 |
| Sold in Quantity | Each |
Ratings & Reviews
5
3 Reviews
Customers highly recommend our product due to its long lasting quality and competitive pricing. The product stands out in its durability and practical use. Users identify it as their preferred choice, and commend the superior quality and performance compared to other brands. A highlighted benefit is the product's affordability, particularly the Scat crankshaft, which is regarded as top in its class for engine products. Overall, customers are satisfied with the product's high-functioning, cost-efficient qualities.
Ratings & Reviews
5
3 Reviews
Customers highly recommend our product due to its long lasting quality and competitive pricing. The product stands out in its durability and practical use. Users identify it as their preferred choice, and commend the superior quality and performance compared to other brands. A highlighted benefit is the product's affordability, particularly the Scat crankshaft, which is regarded as top in its class for engine products. Overall, customers are satisfied with the product's high-functioning, cost-efficient qualities.
5
3 reviews
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I would buy this product again.
5.0
4 months ago
Bel Air.
Claire field Utah.
Verified
Rebuild like I bought a man motor this is a really good, reliable insurance crank.
Would Recommend
great service
5.0
7 years ago
jerry
hemet, ca
Verified
my go-to place when i need a part that will work and last at a good price.
Would Recommend

Best price around for a Scat crankshaft.
5.0
9 years ago
Doc
Porterville, CA
Verified
Scat makes some of the best products for your engine and Speedway had the best price hands down including shipping.
Would Recommend
Showing 3 of 3 reviews
Questions & Answers
Questions & Answers
2 Questions • 2 Answers
Which harmonic damper would I use with this crank? A 350 internally balanced or a 400 ex balance
by sean
• 8 years ago
1 answer
View Answer
Can this crankshaft be used out of the box with 6.0 inch rods?
by MynameNick
• 12 years ago
1 answer
View Answer
2 of 2 questions shown
Fitment
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
