Need help 427 engine problems

[blykins]

I'd pull the pan and look around...pull a rod bearing and make sure it hasn't been scarred. Clean the pickup, change the filter, etc.

You could call Dove and see if they sell individual rockers....also you could try Gessford or even Comp Cams, as they are the same piece.

It's hard to say what would cause it...it could be a weak pushrod or maybe the adjuster broke first.

How's the valve stem look? Also, is the rocker shaft bent? Stands broken?

[JRoss]

Priobe,

This sounds very similar to a problem I had a while back. I was breaking push rods and rockers at low rpm driving in traffic. Each time I took it back to the builder he blamed me for abusing the engine. What it turned out to be is the builder did not have enough clearence where the push rod goes thru the manifold. I had many pushrods that were touching the manifold. This was causing sideways pressure on the pushrods which ended up breaking many pushrods, rockers and it also broke 2 lifters.

George Anderson wrote a good article on this problem
http://www.gessford.com/projects/feintakes.htm

Dont know if this is your problem but it is worth taking a look at.

Good luck
John