BOSTANG

Just would like to know what a 3.375 pulley put out in boost. I read 8# to 12# of boost. the car put down 463 rwhp in wis. But car is now in the south, my need to put it back on the dyno.

Diabolical!

On a 1st gen rotor whipple a 3.375 will typically put out between 10 and 11psi (peak). Add about a lb. of boost to that for a second gen whipple. For reference, Whipple switched from the first gen rotor design to second gen around Feb. of '08.

BOSTANG

The car is 07. Suprecharger was on the car when i got the it in sept. of this year.How can i tell if my is a gen. 1or2?It is HO.

onederful100

whipple gen 1 vs gen 2 serial number
on the compressor look for the metal band going around the front part


Gen 1 will begin W4A followed by 4 numbers
Gen 2 will begin with 200 followed by 4 numbers

BOSTANG

Great, will look to what the number read. Thanks

onederful100

even if it's a gen 1, which is what i have, it'll still pull like a beast!

BOSTANG

So true. Ok i look and it is w4a-2552. When i got the car the guy i got it from,said it put down 463rwhp. That was dyno in wis. I live deep in the south my need to get redyno. Could be a little rich or may be spot on. Just don't know at this time. The car pull nice as is.