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Thread: Head Selection?
          
   
   

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  1. #3
    Don Shillady's Avatar
    Don Shillady is offline CHR Member Visit my Photo Gallery
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    May 2004
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    Car Year, Make, Model: 29 fendered roadster
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    Here is a set of flow readings for a lot of heads. Note that the 882 heads are the lowest on the list but they flow pretty well for small volume runners. I am going to try a set of these for a while on a mild-cammed SBC 350 with a professional port smoothing only on the exhaust side keeping the intake runners rough to maintain suspension of the fuel. I am trying for low rpm torque using a 700R4 OD trans with a 3.55 rear and the lower ratio in the 700R4 for acceleration and then low rpm torque in OD running at 2200 rpm. Some folks say 882s are only good for boat anchors, but remember large volume runners are great at high rpm, but maybe not so good at low rpm. Anyway if the 882s with 3 angle 1.95" intakes seem weak I guess my next move would be to the Iron Eagle heads. Aluminum heads are more expensive but do allow higher compression ratios. Probably the best deal overall is the newer Vortec heads but there are several models, some better than others and the only drawback is that you have to buy a newer intake manifold. Maybe I should have done that since the Vortec heads are actually the cheapest option. Anyway here is is a good set of test comparisons:

    http://chevyhiperformance.com/techarticles/41598/

    Don Shillady
    Retired Scientist/teen rodder
    Last edited by Don Shillady; 07-16-2005 at 09:41 PM.

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