firepwr

iTrader: (3)

I just picked up a 2000 5.3 for a steal and I was thinking of putting my 02 ls1 stock heads and cam on it. One of the 5.3's stock heads has a plug hole with no threads left in it. It's just going in my ol cj-7 for the trails. What do you guys think???

InchUp

iTrader: (2)

Sending PM right now.

03Sssnake

iTrader: (20)

Dude, keep the 5.3 heads and just throw an average cam in it in the 224-230 range. Those 5.3 heads are great head, and I am considering deep-sixing my 241 heads in favor of some PRC 5.3 stage 2.5s along with a 224R cam.

MPFD

iTrader: (5)

If you put the LS1 heads on the 5.3 engine you will shroud the intake valve with the cylinder wall and they will actually flow worse then the 5.3 heads with the smaller valves.

wildta

iTrader: (1)

If anything,port your 5.3 heads,I would not gowith other heads,they will drop compression, just change cam.

StrokerAce03

iTrader: (7)

The 5.3's flow better and the compression drop isn't worth it. Stick a tr220 in it and roll; or if its just for trails I'd suggest something like a Vinci 210/218. That cam makes hella torque down low.

firepwr

iTrader: (3)

Thanks guys for all the input.
This thing is on a very tight budget. I may see how much the machine shop would charge me to fix the plug hole