What size a throttle body should I use for a 95 LT1 with the following:

Ported and polished heads (peak flow 278/191 CFM)
Comp XE 230/236-112 (.545/.544 lift w/1.6)
new lifters, pushrods, guideplates, 1.6 rockers
SLP headers
Hi-flow cat
SLP cold air induction

I measured the holes on the intake, and they are 52 mm. Is there any benefit to getting a 58mm on this setup?

Thanks,

BRAD

 

well if you go to 58mm tb then you'll have to bore out your intake. i would say that the 52mm tb would work just fine.

 

52 should be fine but if you decide to do future mods .ie blower,turbo etc....you might as well buy a 58....i believe edlebrock also makes a 54.....