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wayner wayner is offline
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Join Date: Apr 2007
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3.0 engines use a shorter stroke crank than a factory 3.2, so pin offsets are different depending on what generation of case you start with

If you go to a larger bore piston though, you can turn the 3.0 into what people call a short stroke 3.2 using displacement instead of stroke, and the pin offset remains the same I think?? (Al can confirm)?.


Those pistons in your picture look exactly like my old 9.5:1 pistons.

At 10.5:1 the new ones that I have from the same manufacturer look like this (but require twin plug)




(For comparison here were my lower compression ones - basically like 10.5 with one side shaved off Max Moritz style, to get a safe 9.5:1 with an open flame path)


My 3.0 was VERY health with these pistons. Seat of pants said well into the 200s, and on the straight aways GT3s passed me a lot slower than I would have expected (yet I went twin plug and 10.5:1 anyway )


For cylinder reference, LN engineering is one source, but you can also get stock 3.0 cylinders bored and re-plated to get up to 3.2. through displacement rather than stoke.

JE and Carillo make their pistons in multiple bore sizes

At 10.5:1, here is a comparison of JE (left) vs Carillo (right)
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Last edited by wayner; 08-12-2016 at 10:53 AM..
Old 08-12-2016, 10:31 AM
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