Hello fellow PT members, new member here, please let me know if this topic has already been discussed before by pasting a link.

Heres some info I need on my new swap coming up in my '99.5 Silverado. First things first, parts ALREADY ordered to do the swap:

-VVT Delete
-Cam ext harness
-Knock sensor harness
-Lingenfelter 58x > 24x module
-NW 92mm Billet Throttle body (cable driven)
-8x Injector conversion adapters (EV1 to EV6)

So far thats it, but my main questions are WHAT else do I need to make this swap from a LM7 (5.3) to a LY6 (6.0). One issues im having trouble with is how do I go about this return fuel system to a returnless which is what the LY6 fuel rail has (returnless).

And if anyone has other tips on making this motor swap pretty much PnP PLEASE let me know.

Thanks

 

you actually dont need the cam extension harness with the lingenfelter module. at least i did not when putting a ly6 into a 06 truck (which truck came with engine that originally had cam sensor in back of block.

I had originally bought the Katech cam extension/knock sensor harness all in one harness....ended up not needing the cam harness so basically wasted 30 bucks and split the harness apart and used only the knock sensor harness.

also the knock sensor plug is different on the ly6 than it is on the valley cover knock sensors.

 

Thanks for the info on the harness. I will be returning it. I have figured out the fuel system issue (return vs. returnless) and bought a corvette inline pressure regulator.