The (first?) Chevy Diesel was a Dud?!?

[Russell]

Originally Posted by Tigger

Thanks for the technical info. I am pretty well versed on steel and alloy compositions, I know 4140SPS well. But, what is a 4l60e and the Long form of PCM, Programmable Cumputah Memory? or such?
I think I'm going feed my buddy some cold Molson's Soda the next time we hook up and see if I can help him out by removing his Suburban out of his way. With 22 years between vehicles, I am glad to hear I may use the original 70's trans with a 90's engine.


Rob

Imagination will often carry us to world's that never were. Without it we go nowhere.

Haha, and you've got me wondering what the heck a 4140SPS is, lol

4l60e is an electronically shifted version of the 700r4 transmission. Its far newer, and therefor much more reliable than the old 700r4s were.

PCM stands for Powertrain Control Module. Basically, a PCM controls both the engine and transmission, while an ECM (Electronic Control module) only controls an engine, or other system in the truck.

Those 5.3s are multi-port injected (injector for each cylinder) engines, and use sequential firing (every injector is fired independantly from the others) as compared to the old TPI multiport systems using batch firing (every injector is fired at the same time as the others, once every two engine strokes), so they are by nature way better on gas, and since each cylinder's injector is controlled by the ECM, each cylinder is tuned, not just the entire engine in general

You will need to get the PCM flashed to remove the vehicle anti-theft stuff, and have it work by itself (it works with other ECMs in the truck) without throwing codes all over the place. These engine swaps are getting pretty common, and as such, cheaper to do as well