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I am finally starting to dig back into my 1971 that was flooded by Katrina. I am looking at building up the ZZ4 as an even better engine. Right now I am trying to choose between porting the L98 heads or buy an aftermarket set. I am really looking at the new Brodix IK200's does any have any recommendations? I do not want to spend over 1200 on the heads.
Edelbrock SB-Chevy Performer RPM E-TEC Aluminum Cylinder Heads
170cc intake ports, they will support up to 500HP plus give enough intake velocity that you can run whatever cam you want, from 200HP - 500 HP.
Just make sure to pair them with the appropriate intake manifold.