Product Summary

4.00" Bore Size, Head Gaskets Included

  • 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
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Key Specs

MFG. Part #91010255
BrandSpeedway Motors
Bore Size4.00"
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Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91010255 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"

Item Details

1957-85 w/ 4.00" Bore

Includes Head Gaskets - Our part #: 91010204

Speedway Motors 91010255 Specifications

KEY SPECS
MFG. Part #91010255
BrandSpeedway Motors
Bore Size4.00"
GENERAL
Sold in QuantityEach
Head Gaskets IncludedYes

Ratings & Reviews

4.9

7 Reviews

Overall Assessment

Customers appreciate the good fit and quality of our product. The gasket set was highly praised, and customers repeatedly mentioned they would purchase it again. Reviewers made note of its high-quality and reliability, with some even favorably comparing our product over competitors. The reasonable pricing was also commended. Users seemed to be completely satisfied with our product's practicality and material quality. While packaging concerns were raised, they did not impact the overall positive reception of the product's performance and value.

4.9

7 reviews

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I would buy again

5.0

a year ago

Me

Pa

Verified

Used this kit on a couple different builds works well

Would Recommend

I will buy this again if needed meet all expectations

4.0

a year ago

Jim

San Antonio TX

Verified

I used it to build a motor for my mud drag truck been holding up for 2 years now

Would Recommend

I would buy this again.

5.0

4 years ago

jmac

westminster, ma

Verified

good fit

Would Recommend

High-quality fits well

5.0

5 years ago

Ratt Pack

Missouri

Verified

Great price, disappointed it how it was packed in a box to small

Would Recommend

Totally good parts n highly recommend your business

5.0

6 years ago

Mike

White Rock British Columbia, Canada

Verified

Awesome parts,n delivery great work!!

Would Recommend

Very pleased I would buy it again

5.0

8 years ago

Eddie

Ennis tx

Verified

Very pleased... good gaskets set

Would Recommend

Good gaskets

5.0

9 years ago

Darren

Rapid City SD

Verified

Great Product

Would Recommend

Showing 7 of 7 reviews

Questions & Answers

4 Questions • 5 Answers

Which way do you install the head gasket their not marked

by Biscuit

• 11 years ago

1 answer

will these work with a .060 over 350

by slim10

• 11 years ago

1 answer

Do these headgaskets need to be retorqued after first warm up?

by Rickkard

• 12 years ago

2 answers

What is the compressed thickness of the head gaskets?

by pepe714

• 13 years ago

1 answer

4 of 4 questions shown

Fitment

  • Gen 1 L03 Small Block Chevy

  • 1-Piece Rear Main 305 LB9

  • Gen 1 L03 Small Block Chevy

  • 1-Piece Rear Main 305 LG4

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • 1-Piece Rear Main 305 LB9

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

  • Gen 1 L03 Small Block Chevy

Customer Impersonation Script