Fast355 I agree. I want to use a port fuel injected intake. I have a Pro Flo 4 system on my Chevelle and it works really well but I
want to try and use OEM PCM on this build. So I guess what I am...

Thanks for the info Carl.
I am actually in the building stage right now. The only thing I plan to do beyond stock is use a ZZ502 camshaft.
Camshaft Specs.....
The duration at .050" tappet lift...

I am still very new to the programming world of PCM's. I have successfully converted a 99 Tahoe from the "Black Box"
to an 0411 PCM. This got my feet a little wet. Now I am wanting to put a L21 454...

Thanks Rick, I appreciate the list.

Gene

Rick,
I sent you a PM hoping to get a copy of your DTC List.

Thanks,
Gene

Hello Everyone,
I have used a couple aftermarket EFI's and have decided to try and keep my new project OEM.
I have a 1999 L21 7.4 Vortec that has CNP and DBW. Unfortunately I was not able to get...