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cylinder heads dart vs. afr

This is a discussion on cylinder heads dart vs. afr within the Internal Engine forums, part of the LSx Technical Help Section category; so far i have found that a 205 afr head can produce 37 hp on a stock ls1 I havent ...

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    Member silverz28camaro's Avatar
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    cylinder heads dart vs. afr

    so far i have found that a 205 afr head can produce 37 hp on a stock ls1

    I havent found anythink on the dart 205 head but specs are very similar

    on the arf it has a 66cc combustion chamber size and the dart is 62 cc, doesnt this mean more compression whick turns into even more hp if all the other specs are the same, valve size, cnc machining, intake port volume, wouldn'r the dart head prove more power

    plus a set of arf are $2200 and the dart are about $780 a peice in jegs catalog.... you do the math

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    Senior Member mrr23's Avatar
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    good heads for the price. few minor issues like the rocker stand guide notch has to be ground off, so it'll sit flat and not break.

    yes, the 62cc will net a little more power.

    i have personally seen the AFR heads produce 37 rwhp on a completely stock 2003 corvette with no tuning. it's a test that vinci did for AFR. the car was completely stock as from the factory. swapped heads only, nothing else and picked up 37 rwhp with no tuning at all.

    i haven't seen any other head company do that kind of test.

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    Quote Originally Posted by silverz28camaro View Post
    so far i have found that a 205 afr head can produce 37 hp on a stock ls1

    I havent found anythink on the dart 205 head but specs are very similar

    on the arf it has a 66cc combustion chamber size and the dart is 62 cc, doesnt this mean more compression whick turns into even more hp if all the other specs are the same, valve size, cnc machining, intake port volume, wouldn'r the dart head prove more power

    plus a set of arf are $2200 and the dart are about $780 a peice in jegs catalog.... you do the math
    Yes more compression will net you more power IF all other specs are the same.

    However out of the box darts against out of the box AFRs, my money is on the AFRs everytime.

  4. #4
    67 Tempest, click the pic mullenh's Avatar
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    math says $60 per HP on AFR
    if i was young and dumb again i woud probably spend the dough, now I won't even though I could afford it. now I might look for some 243 heads that are ported and bump the compression.

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