Crowley

This head will lower compression compared to a stock LS1 head? If so, what are the advantages of this head over a stage II ported LS1 head if you are staying N/A?

Do you need a cam close to .6 lift to benifit from these heads? I currently have the G5 (origional) cam and for a daily driver, it works fine and has a good amount of low end.

What cam will work best with these heads and still be a great daily driver?

thanks,
Crowley

gomer

iTrader: (13)

The combustion chambers on the patriot heads have been welded up to bring the compression up. You can pretty much call them and tell them what size you want your combustion chamber and still keep the stock deck height. When I ordered mine, I spec'd the 59cc chamber.

RyanJ

FYI. Stock LS1 = 68-69cc
59cc = ~11:1
64cc is about 10.4 or 10.5:1.

Low lift numbers look good if I remember...so the cam you have will work. I'd get a new one if you wanted a better idle or jsut wanted to go bigger.

TVWilkes

If you are staying in the N/A world you need the 59cc chambers.This will give 11.2 compression.You will not lose any low end.

Trans Am WS6 RGS

Terry, I sent you a PM.

Crowley

Would it be just as good to go with the 5.3L heads to bump up compression then? What do I gain with the LQ9 heads?

thanks,
Gary

RyanJ

I'll guess and say low lift flow (on both sides) and a better exhaust port.

VSGLS1

iTrader: (8)

You can run the higher lift cams with the LQ9 heads such as the 231/237 & G5X cams...and also get the combustion chamber size that best fits your application.

Beast96Z

iTrader: (21)

LQ-9 heads carry the same intake and exaust ports as the LS-6 heads. 5.3 heads will bump compression, but not as much as the new combustion chamber design Terry has. With the Patriot LS-6/LQ-9, you get all the compression you want or don't want and the LS-6 port design without having to worry about P/V clearence with big cams.

Bowtieman4life

iTrader: (1)

Wouldn't you need a cam with a lot of overlap to run 11.2 compression with pinging or getting Knock retard?

Cal

iTrader: (1)

I would say so . . . esp. in Cali.