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Old 08-16-2009, 01:10 AM
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exhaust
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Old 08-16-2009, 01:14 AM
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Any questions? Please ask away............Lynn

[email protected]
317-839-8378
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Old 08-16-2009, 01:31 AM
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Now that's solid progress!!!
Are they sand-cast? If so, that's a nice casting job.
356-T6 alloy?
What "improvements" to the coolant passages?

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Old 08-16-2009, 01:37 AM
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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.
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Old 08-16-2009, 01:55 AM
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Lynn,

Great work, I was just chatting with a friend of yours last night about the status of the project.

Calvin Hill
Hill Performance
708-250-7420

Last edited by 65nss4spdGTO; 08-16-2009 at 02:12 AM. Reason: typo
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