Originally Posted by epstein
Just my opinion.... But I wouldnt go smaller than 3.25 on stock bottom end
You can see from my sig I did all the fuel upgrades before I went to a smaller pulley...
during the dyno run as was stated...9.5 psi....and when the rpms approached the limiter...was just shy of 12 psi.....
My next step is forged internals on stock displacement. Along with a JRE Cam Package and a 3" pulley.
I appreciate the advice. On your change to a 3.25 pulley did you need to change your belt? it would seem on a ls3 the std pulley is 3.5 so a upgrade to 3.25 may not need it but knowing ahead of time would be great.