Well ive been thinking alot about doing this swap but im not too mechaniclly inclined to pull this off myself so im asking how hard this swap would be. I can get a 07-08 denali wrecked from a wreck yard for about 6-8 grand take the drivetrain out and part the rest off it off. so what would be needed for this swap. Thanks guys.

 

I would just get a 408 and save the time and all the money your going to spend on doing wiring and custom parts to get it to fit.

 

Well at the end of the day i only plan on being about 3-4 grand in after i part the truck off.

 

I think Speartech did the same thing but with an LS2.

https://ls1tech.com/forums/showthrea...highlight=6l80

Looks like everything but the gear shift indicator will work and they had to retain the original PCM.

A 408 would be cheaper but I would think the 6l80 would be worth it!