Can they fit a 5.3L and if so how much hp and tq would they add over stock. Also how much power would a LS6 cam add with the heads.
Also also where could i find some cheap LS6 heads and/or cam.

 

they will fit alot of the f body guys use the 5.3 or the 6.0 heads you can find a set or a cam on e bay and even a f body salvage yard or a salvage yard in general i got a set of 6.0 heads for my camaro and they only cost me 275.00

 

ya, Im more interested in getting some LS6 Heads and/or cam for my 5.3L silverado.


but why do they put 6.0 heads on a f body.

 

Unless you're planning to go forced-induction, those heads are gonna lower your compression...and your ability to make power. If you're staying NA, get some decent 5.3 heads instead. Check with Richard @ WCCH; they're a sponsor and provide performance heads at a decent price.

 

oh ok. thanks im not planning to go turbo or anything

 

The 6.0 heads lower compression. The ls6 heads will raise compression.

 

with those heads the valves will be very close to the sidewall of your bore since its only 3.77 compared to the 5.7 of 3.90, and will make you loose compression as mentioned above.

 

I though the 5.3HO used LS6 heads to help it make the 15 extra hp?

 

Sorry...my bad!!! I was trying to think with half a brain again. That hardly ever works out!

 

so is it completley worth doing the ls6 heads on a 5.3 or a waste of time?