Any help with the above please.

99 z28
current mods k&n,bbk85,Granitelli maf,SLP l/t headers & Y pipe,Borla catback, susp mods, Strange 3.73s,BFG Drags,
3200lb car
Winter mods SLP 475hp heads & cam, Powerdyne 6psi, LS6 intake
Current best 12.83@109 1.924 60'launching off tickover
Occasional road use

 

With the power that you'll be putting down after your "winter mods", you'll want a big converter...like a Yank PT4400.

 

Thanks for that
SLP said 3200 due to road use but car is used 90% at the track as I told them.

 

You don't need a real loose converter in an application with a power adder. You'll drive right through that converter. Something rated around the 3500 range would work a lot better. It'll stall quite a bit higher with 6 psi boost.
I'd recommend the TCI Super Streetfighter, part number 242932. It's very driveable and won't give up any efficiency on the big end.
Kevin

 

I agree with Kevin. A large converter isn't the way to go for a forced induction setup.

The best Yank converters for your setup would be the extreme line: PY-3400E or PY-3600E.

As always, if you are looking at a Yank, I suggest calling Mike about your combination.