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Product Summary

400, 3.75" Stroke, 400 mains Main Journal Style

  • Features a new hi-tech fatigue resistant 80-60-06 cast steel construction for improved durability and long-lasting performance
  • Designed with near forged steel endurance, making it ideal for high-performance applications and heavy-duty use
  • All journals are ground and polished to exacting tolerances, ensuring precise fit and operation
  • Offers superior quality as a stock replacement crank at a value price, making it an ideal choice for budget-conscious engine builders
  • Specifically designed for blocks with 2-piece rear main seals and external balance. It is important to note that this crank is cut for a 5.7 rod and will NOT fit stock 5.565 rod

Key Specs

Stroke3.75"
Main Journal Style400 mains
Crankshaft MaterialCast Steel
Main Journal Diameter2.648"
Rod Journal Diameter2.100"

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Speedway Motors 91515400 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 stock replacement crank at a value price.

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

Item Details

NOTE: Cut for a 5.7 rod and will NOT fit stock 5.565 rod.

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.

Speedway Motors 91515400 Specifications

KEY SPECS
MFG. Part #91515400
BrandSpeedway Motors
Stroke3.75"
Main Journal Style400 mains
Crankshaft MaterialCast Steel
Main Journal Diameter2.648"
Rod Journal Diameter2.100"
Rear Main Seal Style2-piece
GENERAL
Connecting Rod Length5.700"
Sold in QuantityEach