mechanix565

hey guys so im hoing back and forth trying to decide what route to go on transmission selection, heres the vehicle setup

92 lexus sc300 gutted 3350# wet weight no driver (i weigh 140)
cammed nitrous lq9 approximately 600 RWHP on bottle
4.26 rear end gear ratio (welded diff)

i should be able to clear a 28" tall rear tire if not ill make the neccasary "modifications"

will a th400 be a good trans for this setup i do some highway driving but no alot and i dont fly on the highway. im more of a 0-100 kinda guy i dont do highway pulls. im thinking first gear will be violent with this setup.

also what stall would everyone reccomend the cam is the Tick Polluter cam V2.

SMOKNSS

iTrader: (3)

With that gear even with 28" rear tires it is going to be like 3,500 rpm at around 60mph give or take. I ran 4.10s with my th400 and 28" drag radials with my old nitrous motor and it sucked *** for driving because it was always between 3,500-4,500 and it was loud as **** and droned like a bitch inside the car. I can only imagine a 4.26 rear gear.

mechanix565

the 4.26 gear is gonna be swapped for a 3.92 in the next couple months. will it be better then? im trying to put the car deep in the 10's just want to make sure i wont run out of motor by the end of the track

mechanix565

so what im thinking as of right now is 3800 stall, th400, 3.96 gear w/ a 27" tall drag radial on some 15" draglites the 27" tall tire with a 1.0.1 final ratio should put me at 6400 rpm at 130 mph which is where i think is a safe trap speed for low 10's i dont care about turning 3200 rpm on the highway at 65 doesnt bother me car isnt bieng built for fuel efficiency my only other rear gear option is 3.23 and i think thats way to low input please

itsslow98

iTrader: (18)

I would call and speak with whoever will be building your converter. Im not so sure the rear gears will be as much of a roll as you may think with a good stall. You do not get lockup with the th400 so that also hurts highway cruising.

mechanix565

sorry if i sound stupid but what do you mean by as much of a roll, also i live in a real small state i dont do alot of highway cruising an i dont commute its more of a street strip kinda deal for grudge racing