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Afr Heads

This is a discussion on Afr Heads within the Internal Engine forums, part of the LSx Technical Help Section category; who can teel me how good are these ?? i want to go for a big shot of nos 400hp ...

  1. #1
    Junior Member MR NOS's Avatar
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    Afr Heads

    who can teel me how good are these ??

    i want to go for a big shot of nos 400hp or something like that on a small block coz i have borted and polished my stoke heads from the ls1 stock engine and i know that they are not good enough

    http://www.airflowresearch.com/

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    Visualize°Design°Create SSwt00SS's Avatar
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    if you want to drop the coin for them go for it. there are other brands of heads that yield within 5rwhp of those AFR's for about 1/2 that, even then selecting the right cam will get you that 5rwhp back...

    cant really help you out all that much since we dont know what you have done 'mod' wise to your car...

    your best bet is to call Tony Mamo at AFR and talk to him directly. he would be able to point you in the right direction for whatever the goals are for your car...
    2000 SS - The Wicked Witch: °°Cammed 'n Slammed°° 458rwhp/410rwtq
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    If you are just talkingabout the heads. AFR's are the best period. But as the former poster said. there are other companies that offer heads that are within a few horsepower of the AFR'S for cheaper. Summit offers Patriot Performance heads assembled for $1,010 for the pair. That is 2.02's and cost over a thousand less and come with double springs, which if you go with a radical came you will probabley need anyways.

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    Junior Member MR NOS's Avatar
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    tnx bro i needed that info

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    Quote Originally Posted by MR NOS View Post
    tnx bro i needed that info
    anytime mann

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    Senior Member INMY01TA's Avatar
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    I wouldn't say their better than ETP heads.

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    I Like It Stroked 99Ls1fever's Avatar
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    Quote Originally Posted by INMY01TA View Post
    I wouldn't say their better than ETP heads.
    AFR'S? Hot Rod did a full bolt on dyno and pull off and dyno article on just cylinder heads for the LS Series and Afr's proved to be the best. Sept 2007 Issue. I dont even own AFR heads I just like to read Hot Rod Magazine.

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    Senior Member INMY01TA's Avatar
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    Quote Originally Posted by 99Ls1fever View Post
    AFR'S? Hot Rod did a full bolt on dyno and pull off and dyno article on just cylinder heads for the LS Series and Afr's proved to be the best. Sept 2007 Issue. I dont even own AFR heads I just like to read Hot Rod Magazine.
    I've got friends with 8-9 second cars that have compared. 11'>15'

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    Junior Member MR NOS's Avatar
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    oh really that's interasting !!!!

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    I Like It Stroked 99Ls1fever's Avatar
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    Quote Originally Posted by INMY01TA View Post
    I've got friends with 8-9 second cars that have compared. 11'>15'
    That is interesting, If you are going 8 to 9 seconds Then you know your sh*t, So Iwill have to look into those heads and do some research on my own and see what they have to offer... thanks for the info

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    Senior Member INMY01TA's Avatar
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    It's not cheap. The heads themselves are exspensive and I think you have to use special rockers with em. For a head/cam 346 I'd use the AFRs personally.

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    Quote Originally Posted by INMY01TA View Post
    It's not cheap. The heads themselves are exspensive and I think you have to use special rockers with em. For a head/cam 346 I'd use the AFRs personally.
    What are your opnions on Patriot Performance Heads?

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    Junior Member MR NOS's Avatar
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    my cousion have them on his mustang and he says it's the best he have done
    put some chevy people in my country say that they are not that good

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    Senior Member INMY01TA's Avatar
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    Quote Originally Posted by 99Ls1fever View Post
    What are your opnions on Patriot Performance Heads?
    They cost the same as PRC heads, I'd go with PRC.

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    Quote Originally Posted by 99Ls1fever View Post
    That is interesting, If you are going 8 to 9 seconds Then you know your sh*t, So Iwill have to look into those heads and do some research on my own and see what they have to offer... thanks for the info
    Not many 8 sec ls1's out there. Race only is a big difference. Most 8-9 sec cars I know run ETP or AFR's.

    Where the AFR's shine is in the area under the curve. Low RMP, Partial throttle and throttle response. I gained 40+rwhp & 30+rwtq with my AFR heads.

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