I have ported a number of heads and those Crane ported heads exhaust ports are always round and Huge! My hand is cramping just thinking about those ports.....
I have always like a D shaped exhaust port, with the floor filled in as it helps with reversion and increase port velocity.
Really nice heads though, I would be interested in mounting them on my Superflow bench and see what they flow.
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70 Camaro LA Z-28 03B Citrus Green LT-1 M-40 3.73's
69 Camaro X-77 Z-28 10C Cortez Silver M-21 3.73's Deluxe Project X - SOLD
69 Camaro X-77 Z-28 01B Garnet Red w/Black top, M-20 3.73 Deluxe Houndstooth
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