Quote:
Originally Posted by tbirdman88
Sounds like the same problem i had on a small block 400, Under hard acceleration it would pop through the exhaust. It had a bad cam,3 round off exhaust lobes. A new cam and lifters fixed the problem. I also did what was suggested earlier to verify. Take valve covers off and watch rocker arms while rotating engine, The bad ones will not move as much.
Hope this helps
87shortcrewcab
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That's starting to sound more and more likely at this point. A couple questions, though. Would that make the fuel mileage horrible (I'm getting around 8mpg)? And, my issue is only happening under load (like going up a hill), would that be consistent with a worn cam?