stangbear427 said:OK, let me start out by saying that the best tranny advice anyone could give was at the end of that post: put a good shifter on it before you even turn the ignition key. That being said, I'm a little confused about most of the rest. Where did you get those numbers? A T5 weighs 75lbs. and a T56 weighs 120lbs. This is a difference of 45lbs, not 75. But what I'm really wondereing is, my TKO(100lbs) with 300HP at the road and 3.73 rear gears I can take off in second no problem. The TKO has a 1.89:1 second gear, the Viper T56 has a 1.78:1 second gear. You're telling me that with a full 150HP more than I have you can't launch in second? Hell, unless your rear suspension is totally stock (with that kind of money invested in your drivetrain, I certainly hope not) then you should be able to sidestep the clutch in third and still blow my doors in. What problems are you having?
I believe when all said and done the Viper is close to 60-75lbs heavier.. The tranny itself may only be 45-50 lbs heavier but either way you look at it. the t56 has more rotating mass and will require a little more power to operate. you definetly know when you grab a hold of that tranny.
stangbear427 said:, or step up to 3.73's or 4.10's, and launch in 2nd gear. It's all about how you're comfortable driving.
Sure i could take off in 2nd gear.. I wouldn't want to though.. When reading your post you used the word "Launch" which I automatically put into dragstrip termnology. In which case yeah you can take off in 2nd, although it's just lugging the motor, but your not going to "LAUNCH" in second gear. The 2.66 first gear is worlds apart from the stock t5 3.35 first or the TKO 3.27 first gear.
and what tko do you have.. all the ones I see have
1st at 3.27
2nd at 1.98 not 1.89. which is a pretty good jump from 1.78 second on the viper.
here is a list of them from tremec http://www.ttcautomotive.com/English/products/TR-3550.asp
and for an example in first gear at 25mph with the stock t5 with a 3.35 first gear and 3.73's you would be doing 4088 rpms. with the viper and 2.66 first gear and 4.10's, at 25mph your only doing 3568. so first gear is not going to be a problem. 2nd gear starts aren't needed and will only put unwanted stress on the clutch and drivetrain IMO