Thread: pontiac 455 engine code
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06-03-2004 01:56 AM #1
pontiac 455 engine code
I think my engine is 1974 455 pontiac. front passenger side # on block is 0243977 under that is YU. Anybody know what I got?
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06-21-2004 08:43 AM #2
http://www.yearone.com/updatedsingle...ontengid4.html
YU is listed as a 1974 455.
I wonder if air could be trapped in there, maybe more run time would purge it out.
New guy from Utah.