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The holley SD is a good intake, and likely won't see a 1/4 mile diff between it and the RPM in your application. However you didn't say what kind of heads, porting and cam specs. That's what tells us how serious your motor is about needing intake flow.

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I am going to deck the block and run the edelbrock rpm heads 84cc prepped by hughes,(racing valve job and seat grind,light bowl work,intake gasket match,and all stem heights equalized)they say its good to 627hp.My compession with a dish piston should be 10.5 to 1 at o deck and a .039 head gasket.I am tossed on cams but I think I am going with the comp. xe295hl dur. at .050 int.251 ex.257 .564 lift 1.5 roller rockers 110 lobe.I was thinking of 1.78 inch tti headers as well.I am looking for a nasty idle but I want this set up to last on the street for a long time.I was hoping for 550 to 600 hp.