which heads r better ls2 or ls6?
Thread Starter
Racer
Joined: Jan 2009
Posts: 286
Likes: 0
From: Dearborn Mi
which heads r better ls2 or ls6?
i want 2 do a cam upgrade and wondering should i keep my stock heads or port them or get ls2 or ls6 heads but which one is better i have a 01 c5 and would it be a good idea 2 port them or leave them alone?thanks guys
Team Owner
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
If you are upgrading the cam, buy ported heads to go along with them. There doesn't seem to be big savings porting your own, so I would just get new ones. I used ported LS6 and they work great.
Le Mans Master
Joined: Dec 2006
Posts: 7,251
Likes: 16
From: Phoenix Arizona
otherwise if money is no object get ported polished AFR or PRC or TEA heads 
Race Director
Joined: Mar 2001
Posts: 10,030
Likes: 10
From: Prescott AZ
St. Jude Donor '04
I would just try to find some used trickflow or AFR heads there about the same price and flow better
Thread Starter
Racer
Joined: Jan 2009
Posts: 286
Likes: 0
From: Dearborn Mi
guys sorry for all these questions but lets say i just put a cam in and leave the heads stock how much power will i be missing out on sorry for all these questions but you guys are the experts thanks in advance and sorry
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Team Owner
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
It will depend on the cam. If you aren't going to replace the heads, then you may want to get a cam that is spec'd more for stock heads.
Le Mans Master
Joined: Dec 2006
Posts: 7,251
Likes: 16
From: Phoenix Arizona
i would replace the springs though!
even the stock heads are very good heads
Pro
Joined: Oct 2005
Posts: 733
Likes: 0
From: Vanceboro NC
That's not completely true, a properly ported 243 will out flow the AFR 225's and make better power.
Pro
Joined: Oct 2005
Posts: 733
Likes: 0
From: Vanceboro NC
Chaase is right that would really depend on the cam and the qaulity of the heads.
