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-   -   New Stock Replacement Head Buyer Beware (https://classracer.com/classforum/showthread.php?t=68687)

SSDiv6 01-18-2018 04:01 PM
Re: New Stock Replacement Head Buyer Beware
 
They also require new valve cover gaskets with a very thin flange... :D:D:D

Alan Roehrich 01-18-2018 10:38 PM
Re: New Stock Replacement Head Buyer Beware
 
Quote:
Originally Posted by PJ305 (Post 554104)
Terry the problem is not one of the castings on the approved list is able to get down to the stock runner cc's legally "wink wink" ! I talked to a tech guy at RHS today and he told me they haven't casted their approved heads since 2011. That doesn't mean you can't find them but he said RHS is pretty much done with cast iron stuff!

I just wish NHRA would research something before they paint it with their broad brush!

Engine Quest bought most of the RHS cast iron line.

Larry Hill 01-19-2018 08:26 AM
Re: New Stock Replacement Head Buyer Beware
 
They also require heavy new valves, no nail heads or wasted stems, and thick wall seats. Don't forget to sink the valves.


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