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Old 06-10-2018, 01:28 PM
jcisworthy jcisworthy is offline
232 I6
Join Date: Apr 01, 2016
Location: Amsterdam NY
Posts: 33
I do not remember what casting I used on that build. Any iron head can be ported to that level and more.

Even 304 small valve heads if larger valves are installed.

My street ported heads have a lot of work done to them. They have stock entrance size and no epoxy where race heads will have pushrod tubes, raised roof and a little more work in the runner and more time on the flow bench.

I am using 2.055/1.650 8mm Ferrea 8mm ID bronze guides and Ferrea 6000 valves from an LS1 application in all my iron heads now.

The heads for that build had 11/32. I am also using PAC racing dual springs, locks, retainers, and spring seat locators on all my heads.
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