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Stick with the 1966 389? Or go with a 400/455?
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11-08-2019, 02:39 PM
Bruce Meyer
Ultimate Warrior
Join Date: Dec 2001
Location: Phoenix, Az
Posts: 1,388
Quote:
Originally Posted by
Tomaso
Thanks B-man,
Are the stock heads on my 389 round port or d port?
I know if I went aftermarket, I would get the d port heads
Your stock heads are d port. Round ports didn't happen until 1968
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