Join Date: Aug 2003
Location: Hernando Beach, FL
Feedback Score: 0 reviews
Re: 7.8L Duramax
If you want to know about the 7.8L Durmax, look up an Isuzu dealer and go see him. The 7.8L engine is an Isuzu, though GM may screw around with it to modify the HP and torque.
I entertained buying an Isuzu cab-forward with the 7.8L engine for towing my 5'ver....after seeing a crewcab I-6 diesel Nissan in Texas towing a 5'ver.
I visited the Isuzu/Ford dealer two years ago on the SW side of Dallas to look at one of these beasts. The 7.8L Isuzu is de-tuned so the HP is MUCH lower than the 6.0L Ford....down in the 200HP as I recall...and the torque was in the 500-550 ft/lb range...again as I recall. The salesman talked me out of buying one. He said the Isuzu would destroy my old kidneys (rides really rough) and the power, when compared to my '00 7.3L PSD was not there....said I would really regret it when I hit hills or mountains.
The engine looked like it was really set up for industrial/commercail use when you look at the air filters, etc. The salesman told me it costs as much to work on an Isuzu as a CAT and the parts were about the same costs as CAT parts.....bring money.
And on the crewcab model, which I wanted, you have to pull the entire cab off the frame to work on the engine. That would really be bad.
I suspect your advice re the CAT engine is sound.
2011 Suzuki Burgman 650cc Rice Rocket Scooter 49 MPG, 120+ MPH, & 2009 Honda Shadow 750cc 51 MPG, 100+ MPH
2001 7.3 F-350 Dually Lariat CC LWB 4X2 Dark Green 4.10 4R100 5'ver Hauler (32' Montana 2 slides 10,500# - 2,000# tongue weight), 106 gal aux tank, 198K miles, nephews arguing over who will inherit it 'cause I'm gonna' drive it 'til I die. Bone stock.
SOLD 2001 5.4 Gasser F-250 XLT Crewcab SWB 4X2 3.73 4R100 98K miles headed to 150K stock as the day it was made
Before these: '00 F-250 CC PSD, '97 F-250 CC PSD, '94 Ford F-150, '91 Ford E-250, '81 Ford E-150, '66 Ford F-100 (cars not included)