let me get this straight?!?

[bad brad]

i've read and searched and have heard 2 different opinoins. do not tell me to search, please! 1995 camaro 3.4,,, if i want to put on 3100 (1998 ) model,,, heads and intake on my car i have to change out the pistons too??? i thought i read with some swaps u don't have to change too much? ben, help.....or someone who knows thanks,,,,,new dude,,i've been reading thse forums since december thanks

[XLR8ING]

The combustion chamber on the 3100 aluminum heads are much smaller than the iron heads on your 3.4. If you put them on your block, your compression will jump through the roof. That's why the pistons would need to be changed for 3400 SFI pistons.

[bad brad]

ok, so thats why,,,,so when they say 3x00 swap u can use 3100 or 3400 heads and intakes,,,, but u must use the 3400 (because of the bore) fwd pistons....so u can also use 3500 heads??? ..i can get a 3400 core motor cheap,,,,i work at a junk yard,,,so sweet!

[XLR8ING]

I'm not an expert on the 3500 head/intake swap, but I think you can use it.

And yep, you need the 3400 pistons because of the bore.

[bad brad]

well it'll be due for a rebuild soon (180k) just hate the stupid cowl of the camaro thanks

[SappySE107]

You will need tuning anyway, so once that is sorted out, the stock pistons can be used. The compression with the 3500 top end isn't too bad. Its usable with the 3100 or 3400 heads, but 3500 would certainly be the best. 98 3100 aren't my choice. 2000+ 3100 or 3400 for heads, as they are better casting quality and have a 1mm larger intake valve than the 98 3100.

[bad brad]

ok i scratched the 3100 motor and am getting a 2000 3400 motor.. just use head, intake and piston?????? i know injector also....thanks

[Superdave]

Yes, just swap in the 3400 pistons/rods.. then put the 3400 heads, UIM and plenum on with the propper gaskets and the easy work is done. you'll have to use the 3400 headgaskets, not the 3.4 Camaro ones.

I'd also suggest that you swap in a Crane H260-2 cam while you can, It will make better use of the new top end then your stock cam will.