Thread: notches at the top of the cylinders on Pontiac blocks
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Old 11-25-2024, 03:35 PM
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MarkS57 MarkS57 is offline
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Originally Posted by Jay S View Post
<snip>

The oily photo is from a 75 350, exhaust chamfers only with no valve reliefs <snip>
Interesting, didn't all 350 / 400 / 455 have 2.11 intake valves 75 up?
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