Just came back from AAM who installed my vortech which luckily already had a 3.12 pulley on it ( got the kit used). The results on the dyno were 384 hp 311 tq @ 6600 RPMS w/ 9 psi . The air/fuel stayed right under 12 at like 11.9. until 6600 when it then drops

Dyno:





Didnt have a scanner so those might be a little tough to read...

I just have a few questions being new to this.... Should i give it a little break in period? or tighten the belt after driving it a certain amount of time? also i want to be able to rev it out to around 7000 safely with out having to worry about blowing the motor..... i definately need at least 440 injectors for that correct? Does any one feel that the power really comes in all up top........ i feel my power is made in such a short range of RPMS, more time in that 350 hp range would be nice. Any feedback would be cool.... thanks

 

Unfortunately that is the nature of centrifrugal supercharrgers. They build their boost dependent on RPM. Full boost is not achieved until redline basically. To do otherwise you would need to switch to a Roots blower or turbo.

 

I have revved mine up to 7k and have had no problems but this is not the sfaest thing to do. I'm putting in RC550's in Nov. with AAM's fuel system. I dont think you need a breakin period as long as the car is tuned well. The boost with the 3.12 pulley definitely kicks in a lot quicker. I have a dyno sheet at home that has both curves before and after install of the 3.12 pulley and AAM reflash and the spike in power at 4k rpms is rediculous. My max gain was 44rwp and 60lb/tq after the pulley install and reflash. The power is now more over a wider range of RPMS and I could feel the difference as well right away.

Aaron

 

same chart adjusted....

 

Thanks...