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COMP Cams 747-1 10 Degree Superlock Steel Valve Spring Retainer 1.437"-1.500" OD

(Ford F-150 1975-93, Mustang 1964-79, F-250 1975-93, Bronco 1966-93, Thunderbird 1963-81, F-350 1975-86, Maverick 1971-77, Galaxie 500 1963-74 + 164 more models)

Part of: COMP Cams 10 Degree Superlock Steel Valve Spring Retainer

Other options in this family: COMP Cams 740-1 COMP Cams 741-1

Manufacturer

Picture for manufacturer COMP Cams

Part Number

747-1
6 reviews
Sale Price

$12.95

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The COMP Cams 747-1 Superlock valve spring retainer is precision-engineered from high-quality steel to provide reliable valve train performance in high-performance and racing applications. Designed with a 10-degree taper angle, this retainer works with matching 10-degree valve locks to create a secure, self-locking system that prevents keeper walk and valve float at high RPM.

Key Features:

  • Fits valve springs with 1.437" to 1.500" outside diameter
  • 10-degree lock angle for positive keeper retention
  • Durable steel construction for long-lasting performance
  • Superlock design prevents keeper separation under high valve spring pressures
  • Ideal for high-lift camshaft and high-RPM applications
  • Precision machined for consistent quality and proper valve geometry

This retainer is a critical component in maintaining valve train stability, particularly in performance engines where increased spring pressures and aggressive cam profiles demand superior keeper retention. The 10-degree lock angle provides a larger contact area than standard 7-degree locks, distributing loads more evenly and reducing the risk of failure during extreme operating conditions.

Products specifications

Fits

Ford F-150 1975-93, Mustang 1964-79, F-250 1975-93, Bronco 1966-93, Thunderbird 1963-81, F-350 1975-86, Maverick 1971-77, Galaxie 500 1963-74, F-100 1975-83, F-250 Pickup 1965-93, Fairlane 1963-70, Ranchero 1963-79, Torino 1968-76 + 159 more models

Diameter 3

0.69

Diameter 1

1.4

Valve Spring Diameter

1.437-1.500

Compatible Lock

638-1

Valve Stem Size

All

Diameter 2

1.05

AMAZON ASIN

B000P5GEO6

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

Yes

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exemption Reason

No impact on pollution output of vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Lock Angle

10

Retainer Material

4140 Chromemoly Steel

excellent service, i had to wait a few days for the order to be processesed, but only because i ordered on Friday afternoon, but love the site!

My part came very fast, it took only two days to arrive. I feel I got a great deal on the part I bought, and I am very happy with the quality and the service. I will definitely do business again. Thank you.

Fast shipping, product was excellent .

I ordered a hitch off of this site for Christmas, I have never heard of it nor did I know how they were, but they are great! Got my package in I'd say 4 days, very fast and it was exactly what I wanted! Only down fall was they charged me 3 times and I was short 150$ for a few days. I got my money back and I would definitely order again.

quick and easy shopping

Smooth transaction, very pleased

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