nasty_ss

I have a 99 camaro T56 car and I'm looking for help on choosing my next turbo. I want better spool times than my PT88 and I'm considering a Borg unit. I wouldn't see full boost until 4500rpm. I'm considering a T4 unit. Either s475 or s480 with 83mm turbine and 1.10 a/r. I'm tuning 317 heads and a TU2 camshaft. Looking to make over 760rwhp before 6500 rpm.

Any suggestions would be greatly appreciated.

nasty_ss

i've been trying to absorb everything from the search results but most guys are using T6 on with different a/r and turbines

Exidous

iTrader: (11)

I'd go the S475. I'd easily give up some HP if it meant I'd have full boost well under 4k. Personal preference.

Forcefed86

iTrader: (4)

What exh. wheel and housing specs on the 88 your running now? Whats your hotside/manifold specs? IMO that cam is pretty high duration for your setup, isn't doing you any favors for early "spool-up".