deerefanatic
Always learnin...
- Joined
- Aug 27, 2011
- Messages
- 566
So, it looks like I'm going to be possibly keeping my blown up LBZ vs going through with my cummins swap. Plan for the truck was to swap in a twin turbo 12v in front of the Allison. Now looking like that's going to get major $$$ to make it work. The cummins I had to go in it was built exactly like my last 12v truck and that one made 502hp/1250tq on fuel only. It made HP peak at 1900 rpm and torque peak at 1850 rpm. I could hook to my 25k gooseneck and put the hammer down and I never saw over 1250 on the pyro.
I want the same from my LBZ... Or I'm not keeping it.
A little history: This duramax has been the biggest POS I've ever owned. Has blown headgaskets twice, and limped the transmission. Since I've owned it, it's only had a fuel mileage EFI Live tune, that I switched to stock whenever I towed. I have a built allison in it now (no billet, but Alto G3 clutches, shift kit, shimmed pump pressure regulator, cutback valve, etc).
I'm looking at rebuilding the engine myself as I work as a heavy truck mechanic, and I've built all my 12v cummins motors over the years myself.
I'm planning on doing:
LB7 pistons, delipping them myself on my lathe and then sending out for ceramic coating
New bearings, gaskets.
Already has EGR delete
Stock turbo + S475 twins? Plan to build my own kit. (I've built all my cummins twin sets over the years)
Will I need rods for this? I'm planning on 1000-1200 ft lbs torque. I don't drag race, and dont sled pull. Daily driver/tow rig duty only.
Injector tips?
Already has a lift pump with external filters. Deleted the whole stock filter housing.
What else? I don't see the need to key the crank, cam, water pump etc as I'm not going to be revving this girl up. Only time it's ever been over 3000 rpm was engine braking down grades.
I want the same from my LBZ... Or I'm not keeping it.
A little history: This duramax has been the biggest POS I've ever owned. Has blown headgaskets twice, and limped the transmission. Since I've owned it, it's only had a fuel mileage EFI Live tune, that I switched to stock whenever I towed. I have a built allison in it now (no billet, but Alto G3 clutches, shift kit, shimmed pump pressure regulator, cutback valve, etc).
I'm looking at rebuilding the engine myself as I work as a heavy truck mechanic, and I've built all my 12v cummins motors over the years myself.
I'm planning on doing:
LB7 pistons, delipping them myself on my lathe and then sending out for ceramic coating
New bearings, gaskets.
Already has EGR delete
Stock turbo + S475 twins? Plan to build my own kit. (I've built all my cummins twin sets over the years)
Will I need rods for this? I'm planning on 1000-1200 ft lbs torque. I don't drag race, and dont sled pull. Daily driver/tow rig duty only.
Injector tips?
Already has a lift pump with external filters. Deleted the whole stock filter housing.
What else? I don't see the need to key the crank, cam, water pump etc as I'm not going to be revving this girl up. Only time it's ever been over 3000 rpm was engine braking down grades.