98 Dodge 2500 4x4 Gas vs 2003 Diesel Swap - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 10-10-2019, 01:56 PM   #1 (permalink)
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98 Dodge 2500 4x4 Gas vs 2003 Diesel Swap

Truck A=1998 Dodge ext cab 4x4 2500 pickup.

It has the original gas engine in it and transmission.We added a 6 1/2 lift,coils,brakes and brake lines,new tires and new wheels.The truck runs excellent but my buddy wants to put in a Diesel engine in it to make it what he wants.

Truck B=2002 Dodge Ext cab service body 4x4 2500 pickup.

It has the original Diesel in it as well.It has low miles (I will check the numbers again) The transmission is some fancy beefed up unit that will need gone thru by the builder.This a 24V unit and is supposed to be an easy fit..

Backstory:My buddy owns a trucking company and has always owned Diesel trucks.He found this 98 Dodge a couple years ago and this was/is 1st ever Dodge,always Chevy/Ford before.He has just tinkered with it and added some looks/leveling to it.

He only drives the truck on average about 10 miles a month to the dump and back..He drives it a lil further right before he puts any fuel in it..Other than that it sits..He does move it forward and back when he needs to get another truck closer to the shop.Maybe couple times a week.

He's determined to swap out a perfectly good running Gas unit for a Diesel that barely goes 10 miles a month just because he can and that's what he wants to do..

I need to know what I'm in for helping on this project because I have done some work on them but not a swap like this (Diesel to Gas)

I know some of y'all have done them on 1 thing or another..I read some stuff Manche posted up..What are the Pro tip's in swapping this deal out ? Got to be some things you've done/seen that would make it easier ?

Edited to fix year.
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Last edited by mudslinger99; 10-11-2019 at 07:35 PM.
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Old 10-10-2019, 03:52 PM   #2 (permalink)
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If you have complete doner truck wont be bad, some difference between years but shouldnt be too bad to make work. I put a 01 24v with a alison has into a 76 ford f700 for company owner last year and its same deal, its his trash truck and get 50 miles a month.
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Old 10-10-2019, 05:14 PM   #3 (permalink)
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Do the Cumstain Dodges have burlier frames than the gassers?

Thought I heard that somewhere, could be total bullshit
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Old 10-10-2019, 05:40 PM   #4 (permalink)
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Have both trucks both running side by side.

Frames are the same. Will have to change the front suspension due to extra motor weight.
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Old 10-10-2019, 06:47 PM   #5 (permalink)
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An 03 would be a common rail. And a different body style than a 98. I doubt the frames are the same.
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Old 10-10-2019, 08:07 PM   #6 (permalink)
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Most of your post doesn't make sense

What is he trying to accomplish?

Bigger cab?

You say 03 is a service body, meaning reg cab long bed?

Is the 03 diesel hammered and ugly?

Both auto tranny?

The 98 is gas, it's it gas v8 or v10?

Does it have a 44/70 60/70 60/80?

In general, you could swap the drive train into the chassis, or swap the cab.

If the goal is to have a diesel crew, I'd just buy one of the millions of 02-09 half ton trucks out there with a blown 4.7 and swap the cab, build a short flat bed, fastest, cheapest, don't have to tear apart the 98

Is diesel truck a 4wd?

Last edited by PROJECTJUNKIE; 10-10-2019 at 08:09 PM.
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Old 10-11-2019, 11:16 AM   #7 (permalink)
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The front suspension in the gas 2500 is the same as in the diesel 2500 in 98. They both suck ass. You can bandaid it all you want with upgrades, it will still suck ass. Not to mention the front rotors are pressed onto the unit bearing with the wheel studs, makes brake jobs annoying (which it will need a lot of). The 2003 is nothing special, but its far and away a better design.
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Old 10-11-2019, 02:22 PM   #8 (permalink)
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03 305/555 all day. Bigger rear axle, better frame and everything else. I don't see why there is even a question.
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Old 10-11-2019, 04:27 PM   #9 (permalink)
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Quote:
Originally Posted by ExWrench View Post
Do the Cumstain Dodges have burlier frames than the gassers?

Thought I heard that somewhere, could be total bullshit
I'm pretty sure the V10's made the same torque and a bunch more HP than the diesels around that year. I've had my '99 V10 for ever and that is what I remember.
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Old 10-11-2019, 04:29 PM   #10 (permalink)
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Originally Posted by Alpine4x4 View Post
The front suspension in the gas 2500 is the same as in the diesel 2500 in 98. They both suck ass. You can bandaid it all you want with upgrades, it will still suck ass. Not to mention the front rotors are pressed onto the unit bearing with the wheel studs, makes brake jobs annoying (which it will need a lot of). The 2003 is nothing special, but its far and away a better design.
Yeah, mine eats front brakes and it is a major pain in the ass to press the studs out to swap rotors. After 145k miles, my front suspension is getting pretty sketchy now. I only use it once every few months to get hay, so I haven't bothered putting any money into redoing it.
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Old 10-11-2019, 04:34 PM   #11 (permalink)
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I'm pretty sure the V10's made the same torque and a bunch more HP than the diesels around that year. I've had my '99 V10 for ever and that is what I remember.
70hp more, but you cant brodozer the V10
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Yeah, mine eats front brakes and it is a major pain in the ass to press the studs out to swap rotors. After 145k miles, my front suspension is getting pretty sketchy now. I only use it once every few months to get hay, so I haven't bothered putting any money into redoing it.
Mine does as well. I get around 20-30k tops out of a set and its rotor time. My rears have issues that need to be fixed which could be attributing to the front wear. That and I tow with it and drive it like a sports car.

I have done most front end parts twice since owning it (bought at 87k, has 157k now) and it has a red head steering box in it. I bought an 11 CTD so we only use my old 5.9 when we need to tow two trailers, do dump runs, yard material, etc. Its fixed enough to not worry about it. I damn near had to become a mechanic to maintain it there for awhile though. Wheel bearings, rotos, brakes, tie rods, drag link, shocks, track bar, radiator, heater core, thermostats (dont buy the cheap ones, they dont work worth a fuck), rear pinion seal, and I'm sure I'm forgetting more all within the last 30k
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Old 10-11-2019, 04:34 PM   #12 (permalink)
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I have a 2002 with 179K miles and my front suspension is pretty damn solid and rides like a caddy...

I did the diy long arm upgrade though..
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Old 10-11-2019, 08:01 PM   #13 (permalink)
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Most of your post doesn't make sense

What is he trying to accomplish?
To spend time and money on a truck he probably shouldn't,like most here

Bigger cab?
Same except the ext doors open.

Is the 03 diesel hammered and ugly?
Compared to the 98,yes.

Both auto tranny?
Yes

The 98 is gas, it's it gas v8 or v10?
V8

Does it have a 44/70 60/70 60/80?
60/60

In general, you could swap the drive train into the chassis, or swap the cab.

If the goal is to have a diesel crew, I'd just buy one of the millions of 02-09 half ton trucks out there with a blown 4.7 and swap the cab, build a short flat bed, fastest, cheapest, don't have to tear apart the 98

Is diesel truck a 4wd?
Quote:
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An 03 would be a common rail. And a different body style than a 98. I doubt the frames are the same.
Correct, see Edit.2002 is the correct year on truck B.
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Old 10-11-2019, 10:55 PM   #14 (permalink)
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It's an 02? That's damn near identical

03 is a totally different animal

That said, if the 98 is nice, leave it alone, and fix up the 02 some, swap the new tires and wheels over.

I kinda doubt it's a 60/60 combo in a v8 truck, tho i guess it's possible
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Old 10-11-2019, 11:15 PM   #15 (permalink)
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Quote:
Originally Posted by 300sniper View Post
Yeah, mine eats front brakes and it is a major pain in the ass to press the studs out to swap rotors. After 145k miles, my front suspension is getting pretty sketchy now. I only use it once every few months to get hay, so I haven't bothered putting any money into redoing it.
https://www.pirate4x4.com/forum/tow-...l#post38063690

i converted my 2wd 1998/7 dodge to slip on rotors, is this not a possibility with the 4wd axles
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Old 10-12-2019, 10:44 AM   #16 (permalink)
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The frames are the same because they both say 8,800 GVRW and the service body was put on but came with a pickup bed when new.

This project is set to start in the next week or so..I an see a lot of cussing going on
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Old 10-15-2019, 12:41 PM   #17 (permalink)
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It's an 02? That's damn near identical

03 is a totally different animal

That said, if the 98 is nice, leave it alone, and fix up the 02 some, swap the new tires and wheels over.

I kinda doubt it's a 60/60 combo in a v8 truck, tho i guess it's possible
t
The 98 is a keep truck.The 02 will be a parts truck for this 1 and 2 others at this point.He doesn't want a service body truck so after the motor and trans swap,it will go on to make a couple more trucks better.
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