05 GSXR 1XXX

iTrader: (16)

ok i bought some 317 heads not knowing anything but thinking they were better flowing heads then ls1.

so my question is.....will these heads work better than my ls1 heads...

i have a 99 c5 with ls6 intake manifold swap, and bolt ons.

i was planin on install these 317 heads and a 224/232 comp cam on my car...i need help. if anyone knows if these ares are better than stock ls1 plz let me know!!!

Thanks
skeeter

05 GSXR 1XXX

iTrader: (16)

anyone???

05 GSXR 1XXX

iTrader: (16)

somone has to know

05 GSXR 1XXX

iTrader: (16)

ttt....

OUTLAWZ RACING

iTrader: (9)

Unless your going force inducted those heads on a n/a car will net you next to nothing. Man you should sell those to some body with a turbo or supercharged car or truck, Take that money and check out Texas speed or patriot or AFR. The heads you have are built with the ls6 style intake and exhaust ports but the down side for you is the have a 72cc combustion chamber. Unless those heads you have been milled just my 0.02$

GuitsBoy

iTrader: (4)

Yes, you will lose much compression. I would also suggest selling those heads and buying something smaller. Also, you wont gain much just by switching to a different stock casting. You should really find a set of ported heads, otherwise the swap really isnt worth the effort.

05 GSXR 1XXX

iTrader: (16)

no thats the plan, i was going to do a turbo, its just i was wondering if these head would benifit me more that stock ls1 heads with a turbo??

conundrum07

iTrader: (20)

They will benifit some with the turbo because of the improved flow, but the primary reason people use them on FI setups is becuase of the larger chamber and therefore compression drop with them.

Keep in mind, without the turbo you will probably lose power with these heads because of the lowered compression.

GuitsBoy

iTrader: (4)

Like conundrum stated, you will have less compression which is beneficial for a forced induction setup, but the overall flow difference wont be much.