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my 4bt cummins dakota

75807 Views 74 Replies 40 Participants Last post by  McMopar
wasn't sure if anyone was interested but i'll throw up a thread about my truck.
i startednt this project when i was 15. i was into diesel pretty early and i wanted something a little differerent so i came up with the idea of a small truck with a diesel. i had it built and driving by the time i was 16 with alot of help from my dad. I've been driving my dakota as a daily driver since. last year i did some mods to the engine including fuel mods, a huge intercooler, twin turbo's, and a streight piped 4 inch exhaust.
here is some pictures

some big plans for the future i want to have new axles, transmission and a race suspension.
i also picked up another 4bt with a different injection pump capable of supporting huge hp. physicaly the pump can be capable of moving enough fuel for 1000+ hp. where as my current one can't support much more than 300hp worth, it also can't handle high rpm's very well.
anyways depending on the money situation i'm either gonna build up the new engine to hopefully around the 700hp mark.

or if money is a little tight then i'll just do some smaller mods on the current setup such as a major head port and probably hook up the nitrous kit that i've had for almost two years now.

plans are to get big power and then test the strength of the rest of the parts at the 1/4 mile and replace broken parts with stronger replacment parts
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this is kinda late but i would look for a 47rh trans. gut it out and keep the pump, stator, and valve body and THROW the rest of it away. Now get a 48re and gut that and keep the internals to swap into the 47rh case. Do a transgo shift kit, billet twin disc torque converter, along with a good kevlar clutch power pack kit and your good to go. i did this in my dakota but i run a 46re with 48re internals for my turbo charged 408ci 4x4 dakota never had a problem yet
Well I like ur compound turboed 4bt awesome. But a 47rh comes behind of a first gen cummins overdrive. This trans is hydro controlled and they have the exact same parts in the gas transmissions. The 48re will bolt up buy is electronically controled but the pcm but all of the internals are thicker and hold more clutches. You can find them as cores from $200-$300 and a heavy-duty I got was $240 kevlar and kolene steels, I also did a full transgo shift kit $125, and you'll need a twin disc converter around $500. And you'll never break it I built one for a buddy of mine compound turboed 6bt and the only thing he broke was the flexplate which he upgraded to a billet one and transfer case
Ya I meant the first cummins trucks that came with an overdrive... have you ever built a trans like mine? I did all trial and error myself in my garage with no help. The 48re has all of the harden shafts, thicker shells, 6 pinion planetary, more splines for the front drum clutches, 5-1 band lever disiel only 4-2 for gas, mega spring, and a have a lot more clutches and steels, with a power pack kit Kevlar clutches kolene steels, billet servos, full shift kit, Chevy billet gov sensor swap, and a good torque converter eve a twin turbored 6bt won't break it... The trick is find the cores or else all of these parts will cost as much as a truck after said and done. I built my self a level 5 viper trans like the one PATC sells for a fraction of the cost. And believe me for as big as my truck is, its very fast. I ran best 12.78 in the quarter on 37s so if you wonder about my credentials about this stuff I think I got it... There's too many guys on here talk the talk and that's it that only know terms and haven't done any performance mods by themselves
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Yes you will need the adapter From a cummins truck also I've seen them used for about $100
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