domestic disturbance

iTrader: (35)

Guy I was running a 6spd with 28" tall tire and 4.56 gear.... Swapping over to a turbo 400 and wondering if I may need to re gear the car....

All Im really concerned about is running the best 1/8 mile time I can get, I do occasionally street drive the car....

Car basic details...

370 with F1 Blower, makes roughly 800whp

Thanks alot for inputs

RENE'S RAGE

iTrader: (96)

I'd leave the 4.56's in it.
And see what it does.

domestic disturbance

iTrader: (35)

I was kind of thinking it would be to much and lock the converter up way to soon....

ty_ty13

iTrader: (42)

you already have it... run it and see... that 4.56 and 1st gear in the tranny would be my concern... i hope you have a way to control boost and or timing.

93camaro_zzz

iTrader: (13)

I mean technically you shouldn't trap over 125 in the 1/8th, so you should be ok with 4.56's by the numbers, but when it comes down to it, I think it would be next to impossible to actually plant the tire in 1st gear with that much gear. I think in actuality, the car would probably be faster with a 3.25-3.50 gear.

Mystery Bird

iTrader: (7)

Lock converter with a TH400?

RENE'S RAGE

iTrader: (96)

Yeah, I'm alittle lost on that one.
He must be meaning something else.

domestic disturbance

iTrader: (35)

As far as not locking but to were you know to were its not slipping the converter anymore....

93camaro_zzz

iTrader: (13)

The converter is always slipping, it is part of how it actually functions, but I think you mean where the converter is past it's stall point and doesn't slip as much.

RENE'S RAGE

iTrader: (96)

I think if you had the 4.56's with the 6 speed
you might be o.k. With the TH-400.
The stock 1st gear in a TH-400 is 2.48.
I really don't know about a blower car.
But N/A it would be badass in the 1/8 mile.

Old Geezer

iTrader: (3)

Add in the torque multiplication w/ the 400 converter, that's not there w/ the 6 speed, and it could well be "tire fryer" time.....

domestic disturbance

iTrader: (35)

I went ahead and put a 3.73 in it to start with!