t-56

[bullitt]

i'm putting in a viper t-56 tranny. what do you'll think?

[Ralph Greene]

Originally posted by bullitt
i'm putting in a viper t-56 tranny. what do you'll think?

Unless you are making some serious HP (TQ actually) with a power adder, I think it's way overkill strength wise for NA car and you will lose about 5-10 HP thru it's HD internals. Also with it's 2.66 first gear and .5 6th, you will need to run about 4.56's to have about same overall first and over drive gears you have now. Oh...and car will be slower than with stock trans even then. But the extra gear between 4th and 6th will be nice. You asked.

A better (and much cheaper) choice would be the 2000R T 56 with 2.97 1st gear and .62 6th with rear gears like 3.90 or 4.10's for street use. This trans has gears exactly 30% apart for gears 1-4.

The worst choice of the 3 T 56's that will fit our cars is the 03 Cobra model with it's 2.66 first and .63 6th.

MHO

[bullitt]

True but i snape 2 in put shaft in 2 weeks with that spac stage 3.I have all bolt ons tuber k member bulit 31 in splin with 4:10 gears and the car only wieghts about 3000 to 3100

[Ralph Greene]

Originally posted by bullitt
True but i snape 2 in put shaft in 2 weeks with that spac stage 3.I have all bolt ons tuber k member bulit 31 in splin with 4:10 gears and the car only wieghts about 3000 to 3100

You alreay know this, but for serious drag racing, you might prefer the ratios of one of the new TKO's. But don't know how they shift.

http://www.ttcautomotive.com/English/news/20news.asp

[NITROSTANG]

The Viper T56 has a lower numerically 1st gear. Therefore you will need more Rear End Gear to get the car moving. Spec is an excellent clutch company. The Stage 3 is a little aggressive for a 10 spline Input shaft and Torque.

[bullitt]

What gear shoud i run in it.I have a 4:10 now.The tranny get put in monday

[Ralph Greene]

Originally posted by bullitt
What gear shoud i run in it.I have a 4:10 now.The tranny get put in monday

Currently your overall first gear ratio is 3.38 X 4.10= or 13.85

With a 2.66 1st and 4.30's overall 1st gear ratio is 11.44

With a 2.66 1st and 4.56's overall ratio W/B 12.1

with 4.88's W/B (4.88X2.66) W/B 12.98

You'll have to decide how much launching gear you want, but even 4.88's won't give you what you have now in 1st gear...but close.

You're going to have to go at least to 4.30's or 4.56 to get car to cruise up hill with it's .5 6th. I imagine you will wind up with 4.56's.

I used SPEC 111 for a while on blower car, decided it was too much like on/off switch. Not surprised your input shaft broke. Believe SPEC 11 more than adequate for NA car launching on slicks even and much more drivable. Use Aluminum FW to ease shock to drivetrain. MHO