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Old 05-31-2022, 07:54 PM
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napa68 napa68 is offline
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Originally Posted by 67since67 View Post
Sticking valve stem??? A friend recently bought a 396 car that had been sitting a long time. It would intermittently idle rough and pop thru the carb. He gave it a dose of Sea Foam or some similar product and drove it. It smoothed out and now runs fine. Just a thought....
I've had 2 cars with sticking exhaust valves in recent years. The clearance from guide to stem was just too tight especially when the motor got some solid heat in it. The first was the 427 in my Dad's car, the second was a customers 327. While wiping out a cam lobe is not rare, please don't short cut the process without making sure the rest of the valvetrain is up to snuff.

I know it's expensive and frustrating..........but so is doing it twice.

59 Bel Air LS3 Beater
68 Camaro SS L78 / L88
97 F350 4x4 33k miles
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