In less than a week I want to put a different manifold on my stock engine. Now I heard the Torker II works well with stock FI engines and provides power from 2500 to 6500 rpm. Though the vistors provide power from 3500 to 8500 rpm. Also I read about some performer RPMs that provide power from Idel to 5500 rpm.
Well I can decide what would be better for my stock application. Any help out there?

 

I would thing that the perfomer that gives power from idle to 5500 rpm would be a much better choice for your engine.

 

If your engine is stock I would go with a performer. if you engine is stock and will soon be getting upgrades like cam,heads, headers then get the rpm intake it is a much better intake but if you won't be making upgrades for a while I would go with the performer

performer idle-5500rpm
perrormer rpm 1500-6500rpm
torquer II 2500-6500rpm
Victor Jr. 3500-8000rpm

The last two are way to radical for a stock engine.

 

do they make a performer RPM for centerbolt heads?

 

nope they have to be moded to fit.

The bolt holes for the two center bolts on both sides have to be ground out to make the intake fit.