all lb7s were rated at 300/520 from the factory.
all lb7s were rated at 300/520 from the factory.
Anarchy Diesel Tuning/ Advanced Injection Diesel Technologies
EFI Live Cummins Beta Tester
Duramax and Cummins Tuning
423-506-7427
Thought it was 300/550 for ALLISON, and 300/520 for the ZF6?
All 2500/3500 pickups got the 300HP tuning, but the 01 OS seems to dyno about 5-10HP higher in stock form as the torque based fuel tables allowed more fueling higher up in 01 VS later OS's. With a few small tweaks to the torque based tables, the 02 will outdo an 01 with no other changes I found(since I don't have the change engine oil message to worry about, I swapped back and forth playing with tuning changes to see the differences). In 03 when the MD trucks came out I believe there was a 235HP LB7 option then, but none in the light duty apps that I know of for the LB7.
1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit.