What to do with my 4.8 5spd...

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May 10, 2005 | 03:26 PM

#11

SaintLos

Launching!

Joined: Jul 2004

Posts: 269

Likes: 0

From: Pensacola, FL

Quote:

Originally Posted by 6gear

I would say go with a Radix and a good exhaust system and leave everthing else alone.

When you say leave everything else alone; I know you still mean junk the 5sp, correct? Just trying to hammer the point.

May 10, 2005 | 06:25 PM

#12

RyPkr_99

On The Tree

Joined: Feb 2005

Posts: 124

Likes: 0

From: Western PA

Quote:

Originally Posted by Rook

automatic aw poo

any chance a t56 could swap into this truck 4x4 still? it would be kinda crazy to put it in 4lo and see what breaks first goin down the track. but unfortunately this is my DD for now so i dont wanna break anything 'right away' and ill boost 5psi and go easy on the clutch til i get a better one. think this clutch could handle 5lbs of boost?

Welcome to my life. I have the same engine and drivetrain as you and am considering the 6.0 swap. As for trannies the nv4500 has a granny first. The nv3500 is weak as sh*t. The T56 will not go in without some SERIOUS modifications. There is also the zf s6-650, it's a 6 speed with a granny first. It'll hold 540 (i think) lb/ft and were put in some of the 1 tons I believe. However, finding them isn't easy and buying them isn't fun.

If I go ahead with the swap I'll probably just throw in a little better clutch while I've got it out and just be prepared to replace/rebuild the nv3500 at least a couple of times...

May 10, 2005 | 08:16 PM

#13

jmproductions

TECH Apprentice

Joined: Dec 2004

Posts: 393

Likes: 0

From: San Antonio

Quote:

Originally Posted by Rook

also...i saw a guy ran a 13.8 or 13.9 with just... 4.10 gears, intake/exhaust, and predator programmer, with 180 thermo...ithink thats the gist of it....it was a 4.8/automatic.

This seems unlikely, I think he forgot to mention the nitrous. Anyway I think I would agree that this trans in 4 wheel drive with a lot of power won't live long. If you're in love with the manual, as I am, then look into some kind of 6-speed conversion first because that will cost plenty. Then once you figure out what you want to do to your motor there will be at least a chance it will hold up for a while. Or you could always say screw it and build up your motor and try to granny-shift but I just could never learn that kind of self-control!