My 440 rebuild thread

dano said

Dig in. I'd pop that intake and see whats up. Maybe all the lifters collapsed or the push rods are all too short!

Why do the exhaust retainers look different than the intakes?

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I think the plan for tomorrow will be to open up the oil filter and remove the intake, as you suggested, and have a look at the lifters and pushrods.

As for the retainers, I haven’t the foggiest idea. My guess is that they used rotating retainers on the exhaust valves for some reason?