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Not sure I can agree with #5 having more overlap, or a exhaust leak at the riser joint causing reversion, but hey, if its fixed, its fixed. Extending the riser pipes is a good idea when running anything hotter than a stock cam.
I think these are the gaskets you need? http://www.cpperformance.com/p-14432...er-gasket.aspx |
Originally Posted by wannabe
(Post 3905313)
Corey, my heads were tired on my 468's almost dropped a valve. I chose to go to Dart Iron Eagle heads. The Chevy castings are basically unchanged from 30 years ago and don't fix the issues they have. I would strongly suggest looking at new heads.
Wannabe |
You can get reversion due to leaks at either the head or riser gasket. If you have a leak at the riser put a straight edge on both the riser and manifold surface, you may have a low spot because the gasket is not the problem. Also if you are bottoming out the nut on the clamp band, get new bands, they are stretched.
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