jsconiers

iTrader: (2)

Does anybody make a bolt on kit?

screamin seeman

I don't know if anyone makes a kit. I put an ls2 in a colorado if that would help. I am not sure how similar the colorado and the trail blazer are, but maybe it's worth looking into.

randyc

Seeing how the truck is available with a 5.3 aluminum blockthe swap should relatively painless. You will need the following parts from 5.3 Envoy/Trailblazer:
pan and pick-up (front sump and hole for the halfshafts),
motor mounts
Exhaust manifolds (slightly different from the full size)
Computor re-flash
Should almost be a bolt-in.