Original 1985 Corvette Piston Specs?
03-26-2007, 04:53 PM
#1
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Original 1985 Corvette Piston Specs?
Hi guys, I am getting my engine rebuilt and we are trying to find a replacement piston that is the same as the original specs, the ones that were in there were not original and we can't find all of the specs. Would anyone know the following for an '85?
Number of valve reliefs
Compression distance
Wrist Pin Offset
Also my mechanic found a piston that ups the compression from 9.1 to 9.4, would this not cause any issues with the stock ecm settings?
Thanks!
Number of valve reliefs
Compression distance
Wrist Pin Offset
Also my mechanic found a piston that ups the compression from 9.1 to 9.4, would this not cause any issues with the stock ecm settings?
Thanks!
03-26-2007, 06:37 PM
#2
Le Mans Master
The 85 is a forged piston and has one valve relief only. The other measurements should be the same on any stock type Chevy 350 piston.
03-26-2007, 07:42 PM
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Originally Posted by DF
Would anyone know the following for an '85?
Number of valve reliefs One.
Compression distance 1.560".
Wrist Pin Offset Not a commonly used spec. .060"?
Very similar to or the same as the SpeedPro/TRW L2417F.
Also my mechanic found a piston that ups the compression from 9.1 to 9.4, would this not cause any issues with the stock ecm settings?
Thanks!
Number of valve reliefs One.
Compression distance 1.560".
Wrist Pin Offset Not a commonly used spec. .060"?
Very similar to or the same as the SpeedPro/TRW L2417F.
Also my mechanic found a piston that ups the compression from 9.1 to 9.4, would this not cause any issues with the stock ecm settings?
Thanks!
RACE ON!!!
