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Product Summary

400, 4.125" Bore Size

  • Head gaskets can be used with up to 600 hp - intake gaskets is the 1205 style
  • Oil pan gasket can be used with either RH or LH dipsticks and includes both thin and thick seals
  • Valve cover gaskets are 5/16" rubberized cork suitable for racing
  • Fits '55 and newer 283-400 S/B Chevy using 2 piece rear main

Key Specs

MFG. Part #91010260
BrandSpeedway Motors
Bore Size4.125"

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Speedway Motors 91010260 Details

Speedway Chevy gaskets are for 2-piece rear main blocks. Oil pan gasket can be used with either RH or LH dipsticks and includes both thin and thick seals. Valve cover gaskets are 5/16" rubberized cork suitable for racing.

  • Suitable for engines up to 600 h.p. 
  • Intake Gasket: 1205 style, 1.28" x 2.09"
  • Head gaskets can be used with up to 4.165" bore

Item Details

1970-81 w/ 4.125" Bore Without Steam Holes

Speedway Motors 91010260 Specifications

KEY SPECS
MFG. Part #91010260
BrandSpeedway Motors
Bore Size4.125"
GENERAL
Sold in QuantityEach