Are the stock piston's forged?

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johnparts

johnparts

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Are the stock pistons in the 225 Slant 6 forged? I'm going to do a turbo and I want to know what the stoc pistons will handle.
 
All cast.

Shaker223 over on sl6.org has run 22 lbs of boost and run a best of 12.32 in the 1/4 with stock everything except valve springs,and he o-ringed the block and used a copper gasket.
 
Stock pistons are cast. IF you have a good tune-up and keep them out of detonation/lean conditions they will last a long time.
 
Not necessarily. Anything can happen when you are dealing with forced induction. Just start with a rich tune,and low boost. Then bump the boost/timing slowly and see how it reacts. You MUST have a wideband o2 for proper tuning.
 
Grinder said:
Not necessarily. Anything can happen when you are dealing with forced induction. Just start with a rich tune,and low boost. Then bump the boost/timing slowly and see how it reacts. You MUST have a wideband o2 for proper tuning.
Click to expand...
I work at a shop that has a Dynojet 224 with an eddy current and a wideband so I will tune it on the dyno under a load.
 
Don't know about a turbo application, but fuel rich with nitrous will kill more pistons than fuel lean.
 
Grinder said:
All cast.

Shaker223 over on sl6.org has run 22 lbs of boost and run a best of 12.32 in the 1/4 with stock everything except valve springs,and he o-ringed the block and used a copper gasket.
Click to expand...


All statements in this thread are true by Grinder!!:finga:

I also use a 10GPH methanol jet and 100% meth as well.

To rich caused a high speed miss for me but that was a 10.5 AFR
 
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