Originally posted by Blackcoog:
So what is the real difference between using a T28 kit vs a T3/T4 kit?

I was talking to ADC and using the T28 kit with 42lb injectors and a 255 walbro pump has netted them 320fwhp.


The T28 is limited in airflow significantly compared to the moderate size and up T3/4's.

ADC did NOT get 320 wheels from a T28 kit. They best numbers they made were 300.8FWHP & 287.6FWTQ on race fuel and it was at the limit of the timing curve to get it. The turbo was stalling badly and the intercooler in the kit was grossly undersized for those power levels. (I have the dyno run)

The intercooler in the T28 kit is two small for a T3/4. Proof of that is in back to back testing on Chris's new engine (with a T3/4 57 trim IIRC) by changing the intercooler alone it picked up over 30 FWHP/TQ at the wheels. (roughly 390 vs 360 to quote max power) However it did this throughout the entire powerband. Then again I had always "naysayed" the intercooler in the kit was tiny! (Tom uses a much larger core on his 3L btw )

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.