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COMP Cams 948-1 Race Extreme Triple Valve Spring OD Installed Height - 1.660 2.100

(GMC G2500 1979-80, K1500 1979-80, C1500 1979-80, K2500 1979-80, 1991-96, Jimmy 1973-79, Savana 3500 1996, C3500 1979-86, 1988-96 + 126 more models)

Part of: COMP Cams Race Extreme Triple Valve Springs OD Installed Height

Other options in this family: COMP Cams 947-16 COMP Cams 946-16 COMP Cams 26082-16 COMP Cams 26028-16 COMP Cams 26082-1

Manufacturer

Picture for manufacturer COMP Cams

Part Number

948-1
8 reviews
Sale Price

$40.23

Estimated ship date Monday, November 23

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Product Details

The COMP Cams 948-1 Race Extreme Triple Valve Spring is engineered for high-performance racing applications where extreme valve control is critical. This premium triple spring design provides superior resistance to valve float at high RPM, making it ideal for aggressive camshaft profiles and high-lift racing applications.

Key Specifications:

  • Outside Diameter: 1.660 inches
  • Installed Height: 2.100 inches
  • Triple spring configuration for maximum control
  • Race Extreme series construction
  • Designed for high-lift, high-RPM applications
  • Single spring per package

The triple spring design features three concentric springs working together to deliver consistent valve control throughout the RPM range while minimizing harmonics that can lead to valve float. The Race Extreme series represents COMP Cams' highest level of valve spring technology, utilizing premium materials and precision manufacturing to withstand the demanding conditions of competitive racing environments.

Application Notes: This spring requires proper machining and clearancing of cylinder heads. Verify spring-to-retainer clearance, coil bind clearance, and valve guide/seal compatibility before installation. Always check installed pressure specifications and seat pressure requirements for your specific camshaft.

Products specifications

Fits

GMC G2500 1979-80, K1500 1979-80, C1500 1979-80, K2500 1979-80, 1991-96, Jimmy 1973-79, Savana 3500 1996, C3500 1979-86, 1988-96, K2500 Suburban 1979-80, 1992-96, K3500 1979-86, 1988-96, C15/C1500 Pickup 1968-74 + 123 more models

Spring Rate

687

Inner Spring Inside Diameter

0.863/0.627

Coil Bind Height

1.13

Outer Spring Inside Diameter

1.196

Outer Spring Outside Diameter

1.66

Seat Height

2.1

Number of Springs

3

Seat Pressure

332

Compatible Spring Cup (O.D. Locator)

4708-1

Compatible Shims

4756

Compatible Retainer

739-1

Damper

No

Compatible .570" Guide Diameter Spring Seats

4786-1

AMAZON ASIN

B00062YH8I

Valve Spring Series

Race Extreme

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.

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!

Autoplicity was quick and easy to order from. I found just what I was looking for in absolutely no time at all, plus it was shipped extremely quickly. I would definitely order from this site/company again.<br><br>Thanks!

shopping was easy and quick

excellent ship time and exceptional pricing deffinatly will buy from here again

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.

Smooth transaction, very pleased

They made a mistake with the shipping address, but, they took care of it very politely and professionally. Very nice. Thanks.

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