Supercharger question . . .


Founding Member
Nov 9, 2001
Newark, CA
I am interesed in getting the carbed supercharger system from paxton for my 66 mustang, but have a question that I was hoping someone might be able to answer. I would have posted this in the power adders forum, but this forum seems to have better responses.


Can you run 10 lbs. of boost with a 9.3-9.4 compression ratio?

Everything in the car and motor has been upgraded. The car currently has a 10.4 to 1 CR, but I'm thinking of changing to new heads to drop the CR to the 9.3-9.4 range.

Any help would be appreciated.

  • Sponsors (?)

It can be done but you have to be very careful. It is hard to get the proper mix of air fuel ratio with a carb. throughout the entire r.p.m. range. You will need forged pistons,a timing retard box, and most importantly a dyno tune with a wide band A/F meter.
Blow thru supercharger

You will have to get the compression down to run that much boost. A well built blow through carb is also recommended as is a BTM to control your timing. I don't know if you'll get 10 psi with the paxton kit. The carb enclosures don't seem to work as well as the good hats at higher boost.