Thread: 350 Olds in 1977 Firebird
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Old 02-21-2014, 05:21 PM
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Mr Anonymous Mr Anonymous is offline
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www.realoldspower.com

A 77 would have a lightweight, windowed "3B" block, and the 3A heads. They are immensely reliable, I put 280,000 on one I did. Earlier ones are better, and a 403 is better still, and directly interchanges.

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