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Cab you left out Indy 600-13, 572-13, Brewer and Zeeker. Well Brewers if they will hold water and Zeekers if you can find them. But they are also options from best to least.
Have you used/flowed the Brewers?
I hear how great they are...but I never see them...and just by looks ( I would flow them for FREE to ANYONE who has one available) they are not impressive. Especially for engines over 500 CID. The CSA looks way too small to do much.
I personally saw the dyno (Lance Lines DTS) needle pass 1100 hp on a 604 Brewer motor. Those heads flow VERY well, because the valve to port angle is extremely low. I am not sure of the flow numbers, (500 intake?)but all that counts is the car went 7.80s at 2500 lbs at BIR in Minnesota. That track is at 1300 feet.
As an added note, those heads, due to the small high velocity ports, pull their power 500 rpm below other heads similar.
Last edited by gregsdart; 10/25/14 11:27 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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