Product Summary

Copper, 3.38" Bore Size

  • For 1939-1948 Fords big bore gasket set. Includes Big Bore head gaskets
  • Trimmable intake gasket, 1-piece timing cover seal, timing cover gasket, oil pan gasket, rear main seal, copper exhaust gaskets, water pump gaskets and oil pump gaskets
  • For up to 3-3/8" bore
  • Stock flatheads use a front rope seal as a pan gasket, we recommend using front seal 560-56350
  • New parts make installation cleaner

Comes as a Kit

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Key Specs

MFG. Part #91015885
BrandSpeedway Motors
Bore Size3.38"
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Speedway Motors 91015885 Details

For 1939-1948 Fords big bore gasket set. Includes Big Bore head gaskets. Trimable intake gasket, 1-piece timing cover seal, timing cover gasket, oil pan gasket, rear main seal, copper exhaust gaskets, water pump gaskets and oil pump gaskets. For up to 3-3/8" bore.

Speedway Motors 91015885 Specifications

KEY SPECS
MFG. Part #91015885
BrandSpeedway Motors
Bore Size3.38"
GENERAL
Material TypeCopper
Sold in QuantityKit
NotesStock flatheads use a front rope seal as a pan gasket, we recommend using front seal 560-56350.

Ratings & Reviews

5

2 Reviews

Overall Assessment

Customers praise the Flathead 24 stud Copper Big Bore Gasket Set for its comprehensiveness and premium quality. With copper head and exhaust manifold gaskets, intake valve guide seals, a one-piece front seal, and a superior rear seal, this set offers superior performance. The instructions and tools included for installation, particularly for the rear seal, were also highly valued for heightening usability. The set was frequently recommended as the best buy, outstripping competitors with its thoroughness and quality.

5

2 reviews

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Flathead 24 stud Copper Big Bore Gasket Set

5.0

9 years ago

willie

IL

Verified

very Good Set

Would Recommend

Best buy

5.0

16 years ago

46Ford

NH

This was the most complete gasket set I have purchased. Copper head gaskets with head installation instructions, copper exhaust manifold gaskets, intake valve guide seals, one piece front seal and a rear seal that is way better than the rope seal I received from other gasket sets. I ever received instructions and a knife for the proper installation of the rear seal. Very good

Would Recommend

Showing 2 of 2 reviews

Questions & Answers

4 Questions • 4 Answers

One reviewer noted that intake valve guide seals are included. I do not see them in the picture. Are they included? Thanks.

by DaveR

• 10 years ago

1 answer

Will the head gaskets in this set work with a stock bore engine. These are listed as big bore, but I can't find a complete gasket set for standard bore that has copper head gaskets.

by ginger

• 10 years ago

1 answer

91015885 head gasket placement I have your 91015885 engine kit for my 59AB. no info on head gasket placement. They do have a notch. Should the notch be forward or rearward? Thanks Rudy...

by Rudytbird

• 11 years ago

1 answer

Intake manifold gasket appears missing from big bore 39-48 flathead gasket set?

by

• 15 years ago

1 answer

4 of 4 questions shown

Fitment

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Customer Impersonation Script