CaptainChrysler

I am looking at a 89 one ton 4x4 dodge cummins. It has a 5 speed. I have been trying to find some info about the driveline. What kind of front axle would this have? It appears to have lock out's. They have an np205 t-case? What would the factory hp rating of this be? When did they start intercooling?
Thanks.

rbrettctd

It would have a Dana 60 front, or, very rare, but I looked at one with a Dana 70 front. Either way a good axle. Yes np205 is right. They have a 160hp/400lb ft torque rating. THey started intercooling mid 91, so yours is not intercooled, from the factory anyways.

CaptainChrysler

Where would you find a 4" straight pipe for this rig?

rbrettctd

http://www.dieselpro.net/product.html?pcfid=45
http://www.stans-headers.com/diesel.htm
www.sourceautomotive.biz
these 3 have full 4", many others have 3 or 3.5" dp to 4".

CaptainChrysler

Thanks for the quick reply's.
There is a difference between intercooled and N/I?

rbrettctd

Thats what happens when you become addicted to 1st gens.

CaptainChrysler

Is the differnce between two I/C and N/I a heat shield. Also I really don't need the muffler. Do they all include a muffler, can they sell without? I am new to this, but am anxious.

rbrettctd

Im not sure but think they sell without muffler. Not sure bout heat shield. I bought mine from a place in Oklahoma and it was 3" dp with a heat shield to 4" all the way out. I just built a 4" dp for mine. but there is no difference in exhaust for i/c or non shape wise.

simplysmn

go to the local muffler shop and ask them to just build you a system without muffler mine I think ran me less then 200.00 installed easy to do and makes em sound awesome

CaptainChrysler

Where I used to work they have an exhuast machine, but it only goes
to 3". There are some decent exhuast shops around, but they dont have mandrel benders. I didn't know if they could build the down pipe.

rbrettctd

2 4" 90* elbows + 1 ft of pipe= downpipe

sdstriper

The benefit of an actual "mandrel bend" exhaust is enough to order one. Unless your shop can do mandrel bends then by all means go for it. My local exhaust pro hot rod guru told me once that mandrel bend flows approx. 20% better IIRC, to clarify, the same diameter but conventional bender compared to mandrel bends.

CaptainChrysler

Well this edit backed out on me. I will have to hound him until he sells it to me! I almost had it home last night!