This is probably asked alot but could I just get a couple answers.
I'm curious on whats the peak performance i could get from a Supercharged 350 TBI? (Not interested in tpi, nor nit or turbos) Curious, if anyone could help. I'm wanting to know peak not limit. Also are 4:56 legal and could be obtained in a 10bolt?...

 

I have often thought about putting a Ported and over driven M90 on a TBI but only as a blow through for easier install. I would have to say that you would get about the same HP as a carb set up but with easier adjustment.

4.56 gears are a little overkill and it all depends on the transmission and will this car ever have to maintain hwy speeds. If you go TH350 then 3.73 for "some" hwy but 4.11 will be good for drag. But to answer you question *opens summit catalog* YES! but you need a 3.23 and higher carrier.

In fact use a 8.5 10 bolt and you can get a 5.57