cummins conversion
More Turbo
Joined: Oct 2003
Posts: 632
Likes: 16
From: Fairbanks, Alaska
I'll make you a smokin deal on a dodge cummins donor truck!!!
New User
Joined: Feb 2006
Posts: 9
Likes: 0
From: In Gods country
cummins/ford conversion
A problem I have, Clutch /Tranny problem that is, I have a 1989 F-350 4X4 crewcab, powering this unit is a 1990 5.9 cummins with custom intercooler, 4" exhuast, tweaked V.E. pump, larger injectors, 16cm turbo exhuast housing and a few other tricks mated to this cummins is a ford 5sp ZF-S542 tranny, my problem is this, 1st clutch went at 219.000 miles, replaced this clutch with a rebuilt unit, this clutch went up in smoke after 1 mile running empty. upgraded to a 12" pressure plate with a 12" ceramic button disc, upgraded tranny to a heavy duty ford 5sp ZF-S547, My problem gets worse from here on in, The motor stalls out when I release the clutch (In any gear) including neutral, My best guess is a siezed input shaft bearing or very poor alignement causing the input shaft to bind, ( This tranny just cost $2400.00 dollars) my problem gets worse, Tearing tranny and clutch out again, (3rd time I'm getting good at it now) The tranny will not I say will not seperate from the flywheel, my guess again is the input shaft is seized in pilot bearing ( new pilot brg & input shaft) maybe stuck in new disc no way to get it out to inspect, Any PRO's out there wanna give it there best guess, Since new tranny installation zero miles on unit
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Elder User
Joined: Dec 2004
Posts: 675
Likes: 0
From: Springfield, OR
In reply to the Zinc/Diesel fuel issue. Yes it is true that Diesel and Zinc are incompatible and will quickly break down any galvanized tank. This is why all commercial Pipe that is used for diesel is plain black iron, like you see at the truck stops.
New User
Joined: May 2003
Posts: 6
Likes: 0
I'm swapping a 2004 cummins HPCR HO and NV5600 into my 1977 1/2 Ford F-250 Crewcab 4X4.
I'm planning to use the stock 19 gallon fuel tank for now and a FASS fuel system.
I'm still trying to figure out how I'm going to run the brakes (vacuum or hydroboost??)and how to wire the alternator(I got no freakin' clue).
The HPCR motors have a different exhaust manifold than the 12v's. The turbo points straight down, instead of straight out to the side. I'm hoping it will clear the A/C box, because I ain't doin' without A/C
.
Drivetrain.com makes adapters from NV5600 to NP205, so that will take care of my speedo since the Ford runs off the transfercase.
I'm using a four core radiator specific to the original Ford 400 ci application. The HPCR's also have thinner electronically controlled clutch fans than the earlier gens. I don't know what intercooler to use yet-if you have an idea let me know.
I plan to fab motor mounts using stock Dodge biscuits. Should be fun
I'm planning to use the stock 19 gallon fuel tank for now and a FASS fuel system.
I'm still trying to figure out how I'm going to run the brakes (vacuum or hydroboost??)and how to wire the alternator(I got no freakin' clue).
The HPCR motors have a different exhaust manifold than the 12v's. The turbo points straight down, instead of straight out to the side. I'm hoping it will clear the A/C box, because I ain't doin' without A/C
. Drivetrain.com makes adapters from NV5600 to NP205, so that will take care of my speedo since the Ford runs off the transfercase.
I'm using a four core radiator specific to the original Ford 400 ci application. The HPCR's also have thinner electronically controlled clutch fans than the earlier gens. I don't know what intercooler to use yet-if you have an idea let me know.
I plan to fab motor mounts using stock Dodge biscuits. Should be fun
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Elder User
Joined: Oct 2002
Posts: 743
Likes: 1
You could always run a body lift to gain a little height. I doubt that the 400 radiator would keep it cool enough, since it had a hard time with a working 400 if you hopped them up a little. There should be enough room to run a diesel rad if you can get a little measuring done with a donor truck.
Senior User
Joined: Nov 2006
Posts: 246
Likes: 0
From: Phoenix, AZ
Could anyone give me a rough estimate of how much it costs to swap out a 400 for a cummins deisel and what I would need to do to the front suspension since I have a 2wd that already sags slightly in the front??? thanx
Posting Guru
Joined: Jun 2002
Posts: 1,203
Likes: 2
From: where the deer and antelo
How much of the work can you or are you going to do yourself?
Do you want a new engine?
Are you going to buy a donor truck or try to put the parts together?
I paid $1200 for my '89 W250 Dodge donor. I paid $350 to have my front springs re-arched and a leaf added. I bought a $300+ adapter to mate transmission and transfer case and a couple hundred more in assorted parts and oil. I did all of the work myself, but if I had paid myself $5.00 an hour I'd have thousands more in it. I ended up selling my 460 engine and the 4 speed transmission from the Ford and the axle's and transfer case from the Dodge for over half of my dollar cost.
I don't know what you will have to do to the springs on a 2WD truck. From what I have read here I believe you will have to find a different oil pan than what is on a Dodge Cummins to clear your stearing linkage, but since the 6BT Cummins is used in hundreds of applications you should be able to find one that will work.
So, to answer your question, it will cost you some where between $500 and $15,000 and I'm not sure on the suspension
.