OBS - K3500 5.7 swap for ...

Apr 4, 2006
60
0
6
TX Gulf Coast
#1
Nearing 300k miles. Runs pretty good but just won't pull like it used to. Will a 6.0 fit or bolt to tranny and transfer case? Your thoughts appreciated. Just need to get the "umph" back in the truck.
 

BadChevyZ-71

Administrator
Staff member
Nov 14, 2004
1,024
3
38
Jacksonville, FL
#2
http://www.ls1truck.com/forums/lsx-truck-conversions/9535-obs-lsx-conversion.html

http://www.ls1truck.com/forums/lsx-truck-conversions/3463-part-numbers-needed-ls1-swap.html

Check out those two links. Just from doing a quick browsing, it looks like some good info.. Looks like it's a pretty involved swap, but would probably be worth it in the end if done. If you don't want to go to that extent and keep the 5.7L, I'd look into the following...

New cap, rotor, wires, and spark plugs.
Spider injector kit.
New fuel filter.
Cold air intake.
Aftermarket intake?
Headers and muffler.
PCM tune.
Performance camshaft and internals.
Re-gear axles.