Product Summary

1.498" Inside Diameter, 1.6935" Outside Diameter

  • .060" oversize valve seats
  • Made of a specially hardened material to combat the effect of unleaded fuel and higher performance
  • Machine work required for installation
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Key Specs

MFG. Part #91015313
Inside Diameter1.498"
Outside Diameter1.6935"
Overall Thickness.218"
FinishNatural
See more specs

Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91015313 Details

The flathead Ford V8 was designed to run on fuel with high levels of lead, but even with leaded fuel, the stock valves will eventually hammer the seats out, which will close up the valve lash and leave your valves hanging open...that is if you don't seize a valve to the guides first!

Remember what year your engine was built and how fatigued the valve train components are. Henry may have built them right with the technology he had available then, but this is now and we have the modern components you need.

These 0.060 oversize valve seats are made of a specially hardened material to combat the effect of unleaded fuel and higher performance. Machine work is required for installation. Intake has a 30° seat and exhaust has a 45° seat.

Charts

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 91015313 Specifications

KEY SPECS
MFG. Part #91015313
BrandSpeedway Motors
Inside Diameter1.498"
Outside Diameter1.6935"
Overall Thickness.218"
FinishNatural
GENERAL
Sold in QuantityEach
NotesHas a 30 degree seat.

Ratings & Reviews

5

2 Reviews

Overall Assessment

Customers appreciate our product for its quality and practicality at a fair price. Its excellent performance marks it as their first choice for future orders. Additionally, it's highlighted as a necessary tool for flathead engine rebuilds, although this requires engine machining. Its superior aspects stand out against competitor products, enhancing user satisfaction.

5

2 reviews

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Good product,fair price,excellent ship time

5.0

2 years ago

crockett

Scotts Hill,Tennessee

Verified

I am well pleased with everything about this product snd this company.This will be my first choice on most future parts orders.

Would Recommend

A MUST for any flathead rebuild

5.0

16 years ago

Rascal

Chippewa Falls, WI

Requires engine machining

Would Recommend

Showing 2 of 2 reviews

Questions & Answers

1 Question2 Answers

Is it possible to grind the seat to use with 1.6 valve diameter ?

by Jerome

8 years ago

2 answers

1 of 1 questions shown

Fitment

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