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How much safe power on a 1996 CTD 5.7? #2745971
02/24/20 02:36 AM
02/24/20 02:36 AM
Joined: Aug 2003
Posts: 34,589
Bend,OR USA
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Cab_Burge Offline OP
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Cab_Burge  Offline OP
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Joined: Aug 2003
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Bend,OR USA
I have a customer, car friend, who has a rolled over1996 CTD Ram 2500 long bed extended cab pickup that he wants to use in a 1985 Ram Charger body. We talked about mounting the Ram Charger body on the pick up frame by shortening the pick up frame, he is up for that and several local shops can supposedly do that safely luck
My question is how much power can he safely have added to that motor turned up for street use? help He doesn't know the gear ratio in that truck but he wants 36 or 37 inch tall tires on all four corners.
I haven't paid much attention to the early 12 valve motors as my first CTD was a 24 valve 1998 extended cab 2 wheel drive, my current truck is a single wheel 2006 Ram 3500 4x4 automatic. I liked both of them, especially when towing my loaded 24 ft. enclosed Pace race car trailer going to the drag races up
The 4x4 became necessary when we moved up to central Oregon with the ice and mud in the winter and spring blush


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: How much safe power on a 1996 CTD 5.7? [Re: Cab_Burge] #2745977
02/24/20 06:23 AM
02/24/20 06:23 AM
Joined: Dec 2009
Posts: 11,331
in a cattle trailer down by th...
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Guitar Jones Offline
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in a cattle trailer down by th...
How much power is safe for what? The chassis, the transmission (BTW, you didn't say what the trans is), the rear end? The P pump engines can pumped up a lot. I would consider a billet cover torque converter for an automatic or a clutch upgrade for a stick at a minimum.


I never learned to count my blessings, I choose instead to live inside my disasters.

The Scamp is sold, now just two old trucks and one new one.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NP435, D44, D60 and NP205 divorced transfer case. Magnum 5.2 MPI and NV4500 coming soon.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: How much safe power on a 1996 CTD 5.7? [Re: Cab_Burge] #2746209
02/24/20 08:23 PM
02/24/20 08:23 PM
Joined: Jan 2003
Posts: 8,075
Candler,NC / Myrtle Beach, SC
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JDMopar Offline
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Joined: Jan 2003
Posts: 8,075
Candler,NC / Myrtle Beach, SC
He may have to change the Ramcharger firewall, and install one from an 89-93 pickup that came from the factory with a Cummins. I have a friend here locally that built an 85 crew cab Dodge, and installed a 12 valve 5.9. He had to do the firewall swap, and I think he had to do something different with the radiator support also.

Re: How much safe power on a 1996 CTD 5.7? [Re: JDMopar] #2746287
02/24/20 11:35 PM
02/24/20 11:35 PM
Joined: Dec 2009
Posts: 11,331
in a cattle trailer down by th...
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Guitar Jones Offline
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in a cattle trailer down by th...
There have been plenty of Cummins swapped into the earlier trucks without changing the firewall. The core support is different though. On the 96 the engine sits further back in the chassis than the 1st gen trucks do so to get it too fit using the 96 chassis the front wheels wouldn't be centered in the opening or you would need to modify the firewall.


I never learned to count my blessings, I choose instead to live inside my disasters.

The Scamp is sold, now just two old trucks and one new one.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NP435, D44, D60 and NP205 divorced transfer case. Magnum 5.2 MPI and NV4500 coming soon.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: How much safe power on a 1996 CTD 5.7? [Re: JDMopar] #2746515
02/25/20 07:37 PM
02/25/20 07:37 PM
Joined: Dec 2006
Posts: 1,508
Byron, NY
W.I.N. racing Offline
pro stock
W.I.N. racing  Offline
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Joined: Dec 2006
Posts: 1,508
Byron, NY
Originally Posted by JDMopar
He may have to change the Ramcharger firewall, and install one from an 89-93 pickup that came from the factory with a Cummins. I have a friend here locally that built an 85 crew cab Dodge, and installed a 12 valve 5.9. He had to do the firewall swap, and I think he had to do something different with the radiator support also.

I have personally swapped a Cummins into a '83 D350 and did not have to swap out the firewall. I did however have to change the electrical bulkhead opening to accommodate the '92 electrical harness. If you have an intercooler it is easier to swap the core support but you can remove the intercooler mounts from the 92-93 and weld them on to whatever one that is chosen. Its as easy as swapping from a SB to a BB especially if you have the donor truck

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FOR SALE'02 D1500, Blown/Inj KB, Veny Heads,Bruno/CS2,Dana 60 FOR SALE
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
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Re: How much safe power on a 1996 CTD 5.7? [Re: W.I.N. racing] #2747246
02/27/20 11:10 PM
02/27/20 11:10 PM
Joined: Jan 2003
Posts: 8,075
Candler,NC / Myrtle Beach, SC
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JDMopar Offline
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JDMopar  Offline
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Candler,NC / Myrtle Beach, SC
He may have swapped the firewall for other reasons, if it isn't necessary.....I just remember him saying he swapped it. I know he had to do something to the core support because the later diesel truck he got it out of had square headlights...and his truck has a 76, 77 or so grill with round headlights.

Re: How much safe power on a 1996 CTD 5.7? [Re: Cab_Burge] #2747707
02/29/20 11:57 AM
02/29/20 11:57 AM
Joined: Jan 2003
Posts: 510
Mesa , Az
Jambbii Offline
mopar
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Joined: Jan 2003
Posts: 510
Mesa , Az
Not sure about max power for street use but I used to run around on 40s with my 12v and 4.10s. Ran 13.0s on super swampers so I am assuming power was in the 500s+ at the rear. Would wheel and tow with the truck. Only thing I ever broke was my output shaft and motor mounts.


70 Challenger 1960 Town Wagon P Pump 24v cummins project 06 Mega 3500 Drw 2wd 12 Durango R/T

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