What are the benefits. What estimated hp will I gain with the extra displacement. Will it lower spool time on an s256et, and if so, by how much?

 

man why you hasting all your monies.. if you want mad power in a cobalt chassis..

sell your damn car

buy a cobalt ss "n/a" version.. bam 2.4.. strap on turbo have fun

 

.1 liters of displacement is not a lot to make a difference. As far as more power and such, all depends on how you build the motor, compression ratio, boost etc...

 

I think the main reason behind the 2.1 is that it's stroked and will rev faster, and also the fact that the block is strengthened for severe duty.. that is if you're talking about the ZZP 2.1.. if you're just boring out your stock block without stroking it, there's really no point.

 

Ya zzp 2.1