Originally Posted By: Silverado12
That's amazing a 3.5 can tow that much. I just got back from a trip to WV (Interstate 68, which has some very steep grades) and towed about 6,500# with my 4.3 Chevy. I had a pickup truck on a U-Haul car hauler. Needless to say it was straining.
I could believe it on those older 4.3's. Still: was it to the floor, or was it just spinning at high rpm? IIRC the 4L60 was the real limitation; big gear splits.
Originally Posted By: A_Harman
It wouldn't be easy to put a turbo in the Vee of the GM 4.3. It's pretty busy in there with the balance shaft and oil manifold for the AFM system. I was thinking more along the lines of one turbo mounted outside each bank.
Gotcha. Bummer. Well, it's certainly doable, although I guess the move today is towards higher boost and smaller engines.