Mangled03gmc

iTrader: (95)

Dumb question I just want the thoughts on what you think about pulling the 03 4.8 out to put a 00 ls1 in, I think its a good thing

cstchevy

go with the ls1. put the 4.8 heads on the ls1 and put new springs and a nice cam in their. then to really get moving spray the **** out of it. the heads will yield you a higher compression making more power and the cam will make her dance. then the juice will knock her up for yeah.

Hit Man X

Yeah, an LS1 has more bore and more stroke than the 4.8...if you have access to an inexpensive one go for it!

goshawk23

i would do that swap in a heart beat.

Scream

iTrader: (6)

I did it, and I love it.

I would stick with the LS1 heads though...they have larger valves. See sig for times.

goshawk23

not to mention, i think almost all of those engines were underrated from the factory. so you start with so much more.

cstchevy

and their about 80 lbs lighter.