Anyone replace valve springs over 100K?

Started by Tooky, March 12, 2004, 05:34:24 PM

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Tooky

March 12, 2004, 05:34:24 PM
I got 130K on my stock motor, it doesn't seem to make any additional power over 4000 RPMs..  Could this be attributed to tired valve springs?  How big of a job is it to replace them?  I've never done it before, but I do have a torque wrench.  What kind of lose performance could I expect to restore?  Thanks Guys,
Josh Straub
1990 Pontiac Turbo Grand Prix, GT2871R 475HP-capacity turbo, built 4T60, 28# Injectors, DIY Ostrich realtime chip tune, JeffM Crossover, Cold A/C, BoostValve.com manual controller @ 14 PSI.  200,000 mi factory original motor.  Best time on T25 @ 11 PSI: 14.78 @ 93 MPH.
1991 GMC Syclone: 11.79 @ 114 MPH. Stock with PT51 turbo plus SMC alcohol injection and tuning, 24 PSI

Chris A

#1
March 12, 2004, 07:02:32 PM
Throttle response and high end power will improve alot.
I actually have a set of fairly new springs and retainers if you are interested. They were installed but then the motor took water and wiped the cam.

turby

#2
March 12, 2004, 07:25:24 PM
How much?

Chris A

#3
March 14, 2004, 12:15:39 AM
1/2 what new is, about $35.

turby

#4
March 14, 2004, 08:11:02 AM
Sounds like a good deal.
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