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04-12-2019, 11:08 AM | #1 |
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Pontiac Cylinder Heads
Looking at building a legal SS engine for a 66 GTO with a 389. Edelbrock states the 60587 NHRA approved head is legal for a 389.
The only info I can find from NHRA states the 092/093 factory castings are legal. I do not have a new rule book in front of me at this time... Anyone know if these are legal? |
04-12-2019, 11:54 AM | #2 |
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Re: Pontiac Cylinder Heads
Be careful with those NHRA Approved SS Heads. I bought the AFR 1399 heads for GT/MA on my Mustang 302 and found out that even though the casting was approved, the valve sizes shipped with the heads were larger than stock and thusly not legal for SS. Approved aftermarket heads must have stock sized valves. Verify this many times over with friends, racers using these heads and NHRA tech. Mine are going up on Craig's List.
Edelbroch says these heads take 2.11 and 1.66 intake and exhaust valves. If that matches your application, you are good. Still check..I'm the ford dude.
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Dale Shearon 68 Mustang 6394 |
04-12-2019, 12:36 PM | #3 | |
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Re: Pontiac Cylinder Heads
Quote:
www.PontiacEngines.com |
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04-12-2019, 12:39 PM | #4 |
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Re: Pontiac Cylinder Heads
Sent you a PM.
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04-12-2019, 01:50 PM | #5 | |
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Re: Pontiac Cylinder Heads
Quote:
http://www.classracerinfo.com/default.aspx
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"That'll never work....." |
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04-12-2019, 03:00 PM | #6 | |
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Re: Pontiac Cylinder Heads
Quote:
Just registered, allot of good info. |
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