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Old 05-11-2017, 12:53 PM   #14
hemi43
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Join Date: Mar 2015
Location: Newcastle Ontario Canada
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Re: valve covers, engine rebuild, other stuff

Quote:
Originally Posted by vancelot69 View Post
hemi43:
Yeah, that makes sense. Thanks for the education.

So, it wasn't WOT, but it felt to me like I was hammer down and it was revving pretty high (without having a tach to know for sure) when I drove it last, with an SM465 doing 60-ish, 33s, not sure of the diff gearing, I assume stock, and the SPID plate says 3.73. Another thing last time I drove it, it was about a 35 mile trip, 80% on highways. About halfway through, while on the highway, it started losing power and slowed down to about 52 and was running rough. After a moment, it straightened out and was ok the rest of the drive... And, I've been hearing an almost constant lifter or valve chatter. Sounds to me like all of this is related.
Do you think I really need to do main and rod bearings and rings, or do you think I can get away with just gaskets and seals?

Thanks again!
It sounds like the engine is old and tired. Putting seals and gaskets on it will be like putting lipstick on a pig.
For $hits and giggles, do a leak-down test to see what shape the cylinders are in. Even if it passes, I would be concerned about all the valve train noise you mentioned in your last post.
Here's what I'd be doing ----->https://www.summitracing.com/int/parts/hpe-hp291p
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