The production BB still have small port heads on them. The 502 towing motor is a good example even though it is a crate motor. If you notice the 454 ho 502 440hp and the 502 all have Oval/Square ports on them that are cast for the 454/502 HO and alum for the 502/502. The Gen 6 heads will work on bothe 4 and 5 gen blocks. The Oval/Square heads on the HO crate motors are based on the Edelbrock design and are good heads.
BBC vortec heads
I am contemplating on which heads to buy for my next big block build up. Scoggin Dickey has advertised ; Vortec heads bare - (1) pair for $ 839. Are there any specs for these heads anywhere on the web? Chambers are 100cc. Would these be better than say open chamber oval port heads w/ big valves?
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