hells gate
+1y
I would say 350-400 horse would be a pretty conservative number on power for that engine if its built by anyone with any decent sense at all.
I just sold a 2wd '96 Dodge dually that had Bosch 230 HP Injectors, Industrial Injection compound twin setup off a newer model adapted to work, full cut delivery valves, factory '98 12 valve injection pump slightly retimed, 4K gov springs, marine head with factory cam, FASS fuel setup, and factory pistons. Dyno'd at 621 horse at 2700'ish rpm and 1450'ish torque at 2150'ish rpm.
To be honest with a diesel its always hard to tell your weak link... because everything is a weak link. 17:1 to 21:1 compression ratio with 40-100 pounds of boost is painful to everything. Add 1500 foot pounds of torque to that equation and its all a ticking timebomb.
Rear end, input shaft in the tranny, tranny convertor, tranny clutch pack, head gaskets, holes in pistons, truck frame that was never designed to handle 1/4 of that torque, melted pistons from egt's, (altho with the twins that will be more difficult).
I would probably be more concerned with the transmission than the rear end for now. One guy's "built" in his add to sell his truck dosent mean squat normally. Goerend Brothers in my opinion are the automatic tranny gods when it comes to diesels. Those are BUILT trannys.
~Terry