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 Speedway 1970-81 Chevy 400 Complete Gasket Set Sku # 91010260 Mfr. Part # 91010260 Condition New Brand Speedway Motors Sold Set Details
Speedway Chevygasketsare for2-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 Details1970-81 w/ 4.125" Bore Without Steam Holes Specs MFG. Part # 91010260 Sold in Quantity Each Bore Size 4.125" Reviews Great for budget builds Rated by Tom on January 27, 2026
Summary: Used this on an old 400 dirt track motor and they held up alright. Definitely not top tier but affordable for a cheap rebuild
Yes, I recommend this product.
Good Rated by Dana on December 09, 2018
Summary: Good stuff
Tech Support We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
