This is the supercharger that I plan on using.What compression would be best.I plan on using afr 195's but not sure what compression to use.I want to use pump gas with the most psi possible.http://proficientperformance.com/Mer...&Store_Code=PP

8 to 1

.

Yet faster than the guy running 8:1

-- Joe

You need to realize something that escapes people. These setups were designed for STOCK cars with STOCK compression ratios.

Building a durable, high performance forged slug motor, then dropping the compression ratio to LESS than your stock static ratio is just plain stupid..

Run factory compression, build a free flowing exhaust, which includes head porting, and learn to tun with the '749.

-- Joe

9.8:1 and iron heads. I did not want it to be a dog not in to boost.

With the 7.5 and the 3.33 what is your impeller speed!?

Damn. Sounds nice.

I'm redoing my motor this winter. Gonna go with a smaller chamber, around 9.7:1 c/r.. S-trim.

-- Joe

I run 9.5:1. ran pump gas with 9lbs no problem.
Blownss has 9:1 14lbs on pump gas.
Both cars are intercooled

So with a decent cam,Afr 195's 12 psi,forged bottom end and a ported tpi set up,any ideas on horsepower and torque?I know I can't get an exact but I want a good idea before spending the cash.I am trying to stay ca. legal.

What cam should I use for best hp and torque while staying ca. legal?

Something that makes the most power, and is 50 state legal.

-- Joe

yeah,thanks

Well what else would you like me to say?

Keep your air and cat functioning. Mass uses the same emissions as california. I passed with flying colors on my 560hp setup.

-- Joe

What size cam are you using?

I've been running 9.3:1 stock swirl port iron heads and 9-12 psi depending on belt slippage with no problems for 4-5K miles. I live in central FL where air temp is in the ~90 everyday and water temp struggles to stay below 220*.

I would think AL heads and good/smart tuning should see 10:1 comp and 15 psi easy on pump gas. Think big intercooler or other forms of detonation control.