Transmission and carburetor swap

[Neighbors obs]

I have a 90’ 5.7 tbi with a 4l60e, I’m about to start my project of putting a new engine in it with carburetor on it and swapping to an hm290 5- speed transmission.
I was wondering if I would need a different ECM and some kind custom wiring harness since I will no longer have tbi or an automatic transmission.

Any suggestions and advice would be greatly appreciated on both fronts from anyone who has experience doing this swap!
-Thanks

 

[Nad_Yvalhosert]

Aside from a VSS signal to the speedometer and cruise control, I cant see why would you need an ECM for a carburated engine.

Custom wiring, maybe. But I'd suspect you could remove the entire computer (passenger side) harness all together and use the one by the master cyl exclusively.

 

[Neighbors obs]

Aside from a VSS signal to the speedometer and cruise control, I cant see why would you need an ECM for a carburated engine.

Custom wiring, maybe. But I'd suspect you could remove the entire computer (passenger side) harness all together and use the one by the master cyl exclusively.

Thanks for the help I really appreciate it!

 

[99Silverado]

Following this because I'm swapping my 99 to a built 406 and TH350 for a show/strip truck!