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Old 11-10-2012, 04:10 PM
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Originally Posted by WDCreech View Post
Pontiac, having had block failures, went back to the #488986 block in early 1977, I believe.
Creech, I want to make sure I read this right. Do you mean Pontiac dealerships\service centers saw block #557 failures in stock engines? Or were these #557 blocks hot rodded up then failed?

HP numbers back in 77 was pretty low for a stock 400 block I believe 220 hp or so.
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