Aside from the drive by wire vs drive by cable and the van vs truck wire harness lengths are all LQ4's the same?

Oh, there may be a power steering pump difference due to hydroboost as well?

Other than that are they all the same? For example, will a drive by wire wire harness and ECM from any year work on any year LQ4?

I have a complete LQ4/4L80 with a drive by cable throttle for my '55 Bel Air. If I get get a drive by wire throttle body, wire harness and ECM off any other LQ4/4L80 will it work after tweaking it to stand alone?

Thanks!

 

Short answer is yes Larry. Cool to see you posting on here.

 

There are 2 different crank lengths IIRC.

But other than that, the long block is the same. And yes, the wiring would be the same, subject to things like the DBC/DBW thing; and later ones had provision for electric fans.

Looks like that one has the bigger alternator on it.

 

Larry, you still got my number? Call me. I think I can help you out a little.