Hey guys,

Looking into my 2.5ltr rebuild and hoping that u guys could offer some assistance in my build process. The aim of the question is to find out which one of these mods i.e

1) Boring out the 2.5ltr block to 2.65ltr.
2) or fitting bigger cams to ported heads.

would reduce the spool up of a GT35R (A/R 0.82) and thus give better off boost response and power..

I only want to be able to rev each engine to a max of 8000rpm

advantages and disadvantages of either option