nv3500 vs. tremec T56

[Kory]

I was at first interested in the nv3500 because everyone says how easy it is to install and deal with. But i have always thought it would be cool to have a six speed in my truck. So I have been looking at the T56 and wondering how hard it would be with my dad the mechanics help. But I have headers and I dont want it to interfere with them but cutting up the floor or anything is no big deal. Any help with this would be great because I want something to hold up and Im afraid the nv3500 wont do the job. But anyone correct me if im wrong. My truck is a 350 with something like 350 horse. Im pretty easy on it and I never race it except against people who think they can hang around town. Thanks again for all your replies helping me with all of my problems. Kory

[redugly]

i have a t56 in my truck the hardest part was trans crossmember had to be cut up to accomadate t56. and i think i had to move my exhaust pipe over about an inch since the t56 was replacing a t10 which is smaller

[Knanthrup]

ZZ4Blazer has a lot of experience on this topic, he used the NV and now has the T56.



I\'m using the NV right now, mostly due to simplicity of installation and cost, but I don\'t have my engine done yet so I haven\'t been able to drive it and see how it holds up yet.



I will tell you that in most cases with 350hp and light to mild drriving extremes on it, the NV should hold up just fine. In another month or so I\'ll be able to give the torture test report on it.

[ZZ4Blazer]

I have an aftermarket T56. Completely different than one from a LT1 or LS1. I wish I had gone with a factory one instead.



LT1 T56 is the easiest to install. If you have a 1 peice RMS,then you can use all of the LT1 stuff for it. If not, you need some special peices. The slave on the tranny points towards the back of the truck, unlike most other trannies. I haven\'t seen any clearance problems with shorty headers yet.



Downsides to the T56. Parts can be costly. They are one of the most expensive factory style clutches. The centerforce DF clutch I have cost me like $250. One for the LT1 T56 tranny is $525.



If you gonna do some racing with it, I\'d get an aftermarket shifter. Overshifting the stock shift lever cause a problem when going hard into 3rd gear. This can bend the shift rail.

[WaterDragon]

I have an aftermarket T56. Completely different than one from a LT1 or LS1. I wish I had gone with a factory one instead.



LT1 T56 is the easiest to install. If you have a 1 peice RMS,then you can use all of the LT1 stuff for it. If not, you need some special peices. The slave on the tranny points towards the back of the truck, unlike most other trannies. I haven\'t seen any clearance problems with shorty headers yet.



Downsides to the T56. Parts can be costly. They are one of the most expensive factory style clutches. The centerforce DF clutch I have cost me like $250. One for the LT1 T56 tranny is $525.



If you gonna do some racing with it, I\'d get an aftermarket shifter. Overshifting the stock shift lever cause a problem when going hard into 3rd gear. This can bend the shift rail.


I know this is old as heck and everything but I am Resaerching an LT1 with T56 swap for my 2000 sonoma. The engine and trans choise are because I am going to be drifting this truck. Crazy I know but hey, I'll post up video of it doing it's thing when I have it going.

The reason I drug up this post is because I need to know what zz4blazer ment when he said "1 peice RMS"?

Any speculations or help would be awesome.

[ZR1BLAZER]

The reason I drug up this post is because I need to know what zz4blazer ment when he said "1 peice RMS"?

Any speculations or help would be awesome.
its the seal design on the crank shaft. (rear seal) 86 and up GM blocks had a 1 peice design. 85 and under had a 2 peice design.