Tranny Options For a 383?

[Champ]

I've really been considering buying this crate 383 from GM:

http:// http://m.chevrolet.com/performance/crate-engines/small-block-ht-383.html#.VURS1XZlA0N

My original plan was to put in a t56 to replace my NV3500 when I finally get around to dropping in a new engine, but then I got to wondering if an NV4500 would also be a good option. My reasoning is that with a 4500, my shifter location would be in pretty much the same place as the 3500, so i wouldnt have to hack another hole in my floor, and I would assume that an NV4500 swap would be a little bit more straightforward, but I could be wrong on that. I don't do much towing, other than occasionally hauling my 13ft camper, so that's not a big concern. Any opinions are greatly appreciated!

 

[Chewy1576]

The NV4500 will probably be the strongest option. The T56 may be fine for just driving around, but I'm not sure how well it will hold up to any towing.

 

[someotherguy]

How do you intend to drive/use the truck? You say you're not going to tow a lot, so is it safe to assume you're installing the 383 so you can play?

If so, the NV4500 is not a good choice. It's tough as nails and awesome for towing, but despite the special carbon-fiber synchros (IF it still has the originals, which they can already very easily have been replaced with bronze) it still has a very heavy shift feel. You won't be power-shifting through the gears on an NV4500. Also, it's just 5 speeds, and when you consider the low gear is practically useless unless you're trying to get a heavy load moving, what you really have is a 4 speed w/overdrive.

T56's were offered in torque ratings from 330 lb-ft up to 550, all depends on application; look here for some ideas on where to search for a strong version: http://en.wikipedia.org/wiki/Borg-Warner_T-56_transmission

Richard

 

[Champ]

How do you intend to drive/use the truck? You say you're not going to tow a lot, so is it safe to assume you're installing the 383 so you can play?

You got that right! Mainly just looking to play around with my truck. Looks like a T56 might suit my needs a bit better. Thanks for the info guys!