Thread: New build
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Old 12-07-2023, 03:57 PM
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steve25 steve25 is offline
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Unfortunately only the 63 and up casting heads will allow the far better 65 and 66 tripower’s to be used, so this is another reason to consider running a 77 casting head.
The motor will still look like a 389 with the 77 head and grinding the casting number off will complete the deception.

It takes a 600 cfm carb capacity to make around 400 Hp, so even if each 2 bbl carb of a Tripower set up only flows 200 cfm at a 1.5 Hg four bbl rating you got Feeding a 400 Hp motor covered.

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