Best Cummins for possible engine swop - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 9 (permalink) Old 11-11-2011, 08:03 PM Thread Starter
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Best Cummins for possible engine swop

Thinking about putting a Cummins in a Ramcharger and want to know which one would be good. Would like a newer quiter one but how hard would all the electronics be to get hooked up. Figured you Dodge guys might be able to give some advice.

1999 4700 Started life as a reg chassis, then got dropped 4 inches and then raised 6 inches and 4X4 added and now in the Med duty 4X4 club.
Marmon Herrington 8000lb front axle and transfer case
TS Box
385/65/22.5 Goodyears on 22.5X12.25 Alcoas
Custom bed in the works
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post #2 of 9 (permalink) Old 11-11-2011, 08:59 PM
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i really like the common rails, If you find a 2003-2005 you can use the painless harness and makes everything ALOT easier you will probally double the cost of the conversion depending on the deal you get on the motor, I spent about 10k on my conversion and made some back with the sale of parts, I bought autoworlds quad mounts, all adapters for the trans came from destroked, i also used auto worlds P/S pump bracket and alt bracket.


the p-pumped 12 valve is a good choice and there are quite few out there at really good prices, you will save about $1k right off the bat becasue you dont need the painless harness... pretty simple to get inthere and started..

VE pumped 12 valves are very reliable and do well on fuel but done plan on building big power with that pump.


2nd gen 24 valve is good but more noise than the other 2 not bad on the wiring and they are all over cheap! just look out for the 53 blocks they are known to crack


If it is there i vote for commone rail.

99.5 F250, VGT 5.9 CR cummins

Last edited by dzljon; 11-11-2011 at 09:06 PM.
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post #3 of 9 (permalink) Old 11-12-2011, 12:57 AM
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Hands down a p-pumped 12 valve : imho

'97 3500 dually cc 4x4, bhaf, 4" down pipe to 5" exhaust, 100 plate, boost elbow, 4k gsk, timing bump, 60lb springs. Trans Go shift kit. Billet Converter. Isspro boost, pyro & trans temp gauges.
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post #4 of 9 (permalink) Old 11-14-2011, 09:49 PM Thread Starter
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Thanks for the replies. Ok, what year are the p-pumped 12v and are they quieter or louder than the 2003-2005. I would like to find a donor truck with trans and all so adapters would not be needed. Which one would be better on fuel? Won't need to pump up the power a lot, I already have a tow vehicle for pulling.
How are the mid 90's motors? If I could find a early one, they are pretty close to the Ramchargers so it would be a little easier. If I find a newer one I would have to use the front axle from the newer truck cause the front diff is on the drivers side. Once again thanks for the info.

1999 4700 Started life as a reg chassis, then got dropped 4 inches and then raised 6 inches and 4X4 added and now in the Med duty 4X4 club.
Marmon Herrington 8000lb front axle and transfer case
TS Box
385/65/22.5 Goodyears on 22.5X12.25 Alcoas
Custom bed in the works
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post #5 of 9 (permalink) Old 11-15-2011, 06:03 AM
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Find you a 94 to early 98

Louder than the newer models, but not bad at all, most of us are quit found of the sound.

Mileage, as with all it depends on your tune, rear end ratio & driving style, mine has 3:54 and auto trans, running 65 on cruise I get 20-21 empty, pulling a 15k trailer same speed 16-17. and thats a 4x4 ext cab dually.

'97 3500 dually cc 4x4, bhaf, 4" down pipe to 5" exhaust, 100 plate, boost elbow, 4k gsk, timing bump, 60lb springs. Trans Go shift kit. Billet Converter. Isspro boost, pyro & trans temp gauges.
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post #6 of 9 (permalink) Old 12-05-2011, 10:17 AM
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Not having a clue as to the use - the simplest would be a 4BT from a step van with a Dodge trans ( pref with OD ), next would be anything up to 98 ( 94 to 98 are P7100 injection pumps ).

I would look at moving the body if you use a 93 or 92, the mounts will match from the back of the door forward, section the frame for the right wheelbase and shorten the rear driveshaft and weld or bolt body mounts on for the Ramcharger body. With fender flares you can use a 1 ton or change the hubs for 3/4 ton. The ton ers are cheaper a lot of places because of the registration and insurance.

93 Dodge /CTD, IC, 518, club cab LE, BHAF, KDP fixed, kelderman air ride
81 Isuzu /C223na, 5spd
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post #7 of 9 (permalink) Old 12-19-2011, 12:35 AM Thread Starter
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Ok. Bought a 88 Ramcharger so the project might just happen in the future. Found a solid Southern Cali truck that is rust free. Believe it or not everything works on the thing right down to the cig lighter and washer fluid pump. Fixed it up a little and plan to drive it for a while till I can locate a donor truck. Did some research and if I find a mid 90's Cummins truck I can just transplant everthing right into the RC. Hopefully an 94-95 cause they have OD trans with lockup converter. Sound right to you all. I would like to finish the International up before starting another project.
Reference the 4Bt, would a 5.9 trans hook up to a 4bt.

1999 4700 Started life as a reg chassis, then got dropped 4 inches and then raised 6 inches and 4X4 added and now in the Med duty 4X4 club.
Marmon Herrington 8000lb front axle and transfer case
TS Box
385/65/22.5 Goodyears on 22.5X12.25 Alcoas
Custom bed in the works
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post #8 of 9 (permalink) Old 12-22-2011, 06:18 AM
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The 4BT is the same as the Dodge with 4 cylinders - most commonly found in bread trucks, high cube light weight cargo. The weight of the engine will match the 1/2 ton Ramcharger better and the lower power will cause much less frame flex. A good deal for personal transport and light towing (6-7 k ).

For towing over 10 k moving the body to the pickup frame will leave the tow at over 10 k ( but not on the door jamb label ), it is simpler if you have the space to work, moving the wiring harness is simple if the dashes match. Worst part is pulling 30 in or so out of the back of the frame to get the right wheelbase within 1/16 in as well as straight within 1/16 in. Sandblasting the weld area and making a copper backer plate so the first pass is pretty on both sides. A 4 1/4 in angle grinder with a cutoff wheel does a good job. I prefer to add diamond doubler plates over ground welds but others do a 20% thicker weld on an angle.

The sheet metal has a lot of interchange to 93 - I don't know on the 94 up.

A 4BT should get mileage in the high 20's and a 6BT should do better than 20.

a 518 (non lockup converter from 92 or 93) or 618 (with lockup 94) and 46RH from 95 are probably the easiest, the RE transmissions need electronic control -96 and up - not cheap.

You will probably want to move the sound suppression material from the pickup.

I think it is a good use for a rusted cab or sideswipe.

93 Dodge /CTD, IC, 518, club cab LE, BHAF, KDP fixed, kelderman air ride
81 Isuzu /C223na, 5spd
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post #9 of 9 (permalink) Old 02-23-2012, 12:10 AM Thread Starter
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Well after pondering on the situation for a while, I think I am going to go the 4bt route. I have already installed an A-518 od with lock-up just to try and get some more mpg while it is a gasser. I used 2 B+M converter lock-up controllers to control the OD and converter function that way it is totally adjustable. I know I will have to find a diesel trans cause I think the gasser and diesel trans cases are different. But at least the drive line is ready. I really don't need a power house and the 4bt will let me keep my 1/2 ton running gear with 3.23 gears. About 1650 rpm's at 70mph.

1999 4700 Started life as a reg chassis, then got dropped 4 inches and then raised 6 inches and 4X4 added and now in the Med duty 4X4 club.
Marmon Herrington 8000lb front axle and transfer case
TS Box
385/65/22.5 Goodyears on 22.5X12.25 Alcoas
Custom bed in the works
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