bareskinchevy1500

I'm building a 5.3 vortec looking to make 650+ hp. I have 706 heads which I look up there basically 243 but for trucks. What can I do to make 650+ hp

spawne32

iTrader: (2)

this is kinda a vague question, its easy to make 650+, get a turbo, supercharger or spray the jesus juice.

Tuskyz28

First thing I would do is read this article and take full advantage of the info given!! With minor tweaking you'll be close

http://www.hotrod.com/how-to/engine/hrdp-1104-594hp-53l-gen-iii-small-block-for-3252/

bareskinchevy1500

I have plans for super charger later on down the road . Looking to do it straight motor no super or turbocharger and no nitrous. Just motor alone.

Tuskyz28

A 5.3 don't have enough cubes to make 650 at the motor on motor... look into getting a 408 or bigger cube motor for that kind of power all motor....

bobfig

706 heads are not like the 243's. Those are the gen 3 heads that are 61.45cc chambers. You may of meant the 799 heads.

Imo that size motor would probably top out at 560 crank hp unless godly amounts of money spent on it. Take a look at this thread.

ls1tech.com/forums/generation-iii-internal-engine/732392-recipe-500-rwhp-heads-cam.html