MPFI pistons on a 2000+ 3100?

[Chris88CL]

Will 3.1L MPFI pistons work in the large port 2000+ 3100 engines? Valve clearances still ok? Will the piston come proud of the deck too much and contact the head? Anyone know for sure?

[3100 MPFI]

I used the gen 1 3.1 pistons in my 3100 (late 1999, but almost identical to 2000).

It will jack your compression up quite a bit.

I want to say I was using the camaro 3.1 gen 1 pistons with the iron head headgaskets.

It did have some issues, but nothing tuning couldn't take care of.