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Discussion Starter · #1 ·
New to Pontiacs, I recently found a derelict 70 Bonneville 455 hoping to find a salvageable 455 for my 67 lemans. So far I found C035122 YC stamped on front right of block and head have a 4x cast into them. I thought I read 4x heads came out later. What do I have here so far??
 
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