Efi will not work with a cam that is lopey. I have built a few tbi engines for my trucks and a jeep. Vortec heads..with vortec carb manifold...tbi rebuild and mods and a 14psi spring. Comp cams 12-388-4 cam....420/.440 lift. Works good...if you use vortec heads you will need a tune as the...
4l60e to 4l80e swap...what is needed and how it was done..96+
https://ls1tech.com/forums/automatic-transmission/699277-whats-needed-4l60e-4l80e-swap.html
To get the check engine codes to flash in your dash panel, use a jumper wire or a paper clip and connect terminals A and B of the diagnostic connector. Turn your ignition key on with engine off and the codes should start to blink. All codes should start with code 12 which is one long flash...