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Old 08-16-2009, 01:37 AM
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NHRASuperStock455SD NHRASuperStock455SD is offline
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Quote:
Originally Posted by pontiac jack View Post
Now that's solid progress!!!
Are they sand-cast? If so, that's a nice casting job.
356-T6 alloy?
Are coolant passages pretty much a copy of RAV?
Yes, thank you, and yes 356-T6. We improved the water jackets significantly. As we all know the RA-V has a better valve order for eliminating Siamese exhaust port problems with respect to that center head gasket problem, and we also got significantly improved water flow to the exhaust side of the head. RA-V's were way better than traditional Pontiacs to start. ;-)

These heads will be available in with or without water. How many no water jacket guys out there?

Lynn


Last edited by NHRASuperStock455SD; 08-16-2009 at 01:53 AM.