Quote:

Before getting too excited about them hitting i would set the valves up with the intended springs you are going to use, set with lash and then check again (going the correct direction). There will be a bit of deflection in the pushrods and the rest of valvetrain, big cams are a lot of times real close on valves missing each other, but if you do have to adjust i would cut the exhaust valve down slightly.



My machist actually told me the same thing.

During the time that they were hitting. There was NO head gasket, the valve lash was set to zero. I dont think the head gasket would matter, but the valve lash might make a diff.
But even MP knew it might be problem with large lift and large duration cams..And Ma Mopar called for .300 between the valves with them on the seat...I know for fact I have only .255-.260 max..Si its close. If two years down the road, and I have some valve guide wear..kaboom..its too close for comfort for me really.
I couldnt measure it, but at the closest point it was only .020 inch .025 tops.

Last edited by Bob_Coomer; 01/17/10 08:52 PM.

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