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04-03-2013
Hey. I recently had my 1999 Grand Prix se 3.1L blow a head gasket. I am now currently getting a new engine. The guy I found an engine from, good family friend, said the compression rate for this engine I'm putting in is 185-195. Is that good or just bad? There are 175,000 miles on this new engine in putting In.
04-03-2013
Sounds good to me, if all 6 cylinders are at or around that mark, its all good.
I think the 3800's will be around 180 aswell.
04-04-2013
Mine are 120..... Is that bad? It has new hyper pistons.
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