does a .25 over bore make a big difference? how much of a difference would a ls motor with oversized type r pistons make. about how much hp would that add?

 

werd

 

can some one tell me how much is not enough power? im looking to see if its gonna add some good numbers my adding .25 oversized type r pistons in a ls motor

 

Ok, did you read what cronic said?

 

ok did you notice the time he posted and the time i posted? 1 minute apart. i was typing while he was typing

 

It just assures that the cylinder wall is true round. Also when overboring the builder can tell the machine shop the piston to wall clearance he or she desires. I try to always use overbore pistons in the motors I build. The machine work costs a little more but I feel it is worth every penny. Talk to anyone of the guys on this board who have had motors built with too much piston to wall clearance by honing and running standard bore. It is definitely a good thing to do.

 

The overbore itself is commonly done just to ensure that the cylinder wall is perfect. It will advice with ability but not enough to yield part a good block just to use over sized pistons.