Product Summary

.342" Valve Stem Diameter, 7 Degree Lock Style

  • Works with '49-'53 valve stems and retainers
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Key Specs

MFG. Part #91015316
BrandSpeedway Motors
Material TypeHardened steel
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Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91015316 Details

Stock Flathead Fords have weak valve springs, which increases wear on retainers, valve stem grooves and keepers. Increased horsepower and hard driving often cause failure. Recommended as part of Speedway’s no-lead valve conversion for Flatheads.

  • Heavy-duty, case-hardened, stamped steel 7° keepers

  • Stronger than originals

  • Works with 1949-1953 valve stems and retainers

    16 Pairs

Application

  • 1949-1953 Flathead Ford OEM V8s
  • All other Flatheads using 1949-1953 straight-stem valves

Charts

Specs

  • 11/32" stem size
  • 7-degree retainer angle

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 91015316 Specifications

KEY SPECS
MFG. Part #91015316
BrandSpeedway Motors
Material TypeHardened steel
GENERAL
Valve Stem Diameter.342"
Lock Style7 Degree
Manufacturing ProcessStamped

Ratings & Reviews

5

8 Reviews

Overall Assessment

Customers have praised the product for its excellent quality and practicality, mainly as a superb replacement item. They highlight its perfect fit in specific applications, such as a '52 Ford build. The product’s performance has been commended with assertions of exceptional functionality. The quality of the material used is another major strength, ensuring the product's durability. Customers strongly recommend our product as a superior alternative in the market.

5

8 reviews

5

8

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Filter by Ratings

I would buy again

5.0

a year ago

Freddyfairlane

Winnipeg Canada

Verified

Worked like they should

Would Recommend

I would buy again.

5.0

a year ago

Speedy

Central Pa.

Verified

Didn't install yet look to be quality part!

Would Recommend

Excellent Product

5.0

2 years ago

Pablo

El Cajon, CA

Verified

I'm building a 59A Flathead motor for the street and installing Isky springs and a Schneider street cam, and I did not want to reuse the old keepers. They are much more expensive than OEM keepers, but hopefully they will prevent valves from dropping.

Would Recommend

Uea

5.0

4 years ago

Mike

Fredericktown, Missouri

Verified

This is a winter time project

Best

5.0

8 years ago

Fastford1952

MN

Verified

Used in my 52 ford build. Works great

Would Recommend

Quality product at a good price.

5.0

9 years ago

Skipper

Orford, NH

Verified

Direct replacement item that worked perfectly.

Would Recommend

Happy costuner

5.0

10 years ago

goyejl

Singapore

Verified

Well described product. Fast shipping Abd product well packed.

Would Recommend

just what I needed,

5.0

15 years ago

tony

twin cities mn.

Verified

replacement

Would Recommend

Showing 8 of 8 reviews

Questions & Answers

Fitment

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

Customer Impersonation Script