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Old 09-04-2003, 11:50 PM
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Question for Pontiac guru

I have a set of Poncho heads with the numbers "731" on the center exhaust port. Now my theory is that they are an early set of "31" heads. They have a '67 date code and I further believe that they are "early" RAM AIR I heads. They are D port, 2.11 / 1.77, screw in studs. Any comments can be made to this board or email, beydler@juno.com

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Old 09-05-2003, 08:35 PM
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Head I.D.

the #731 head is a production #- 9792731, the original part # is 9792700 , the head cast should be #31 . the valves are 2.11/1.77 with a 72 cc chamber an it's a 1968 400 RA (RA1)
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Old 09-05-2003, 08:39 PM
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to GTO401

GTO401, do you know were i can find a new old stock M-21
tranny and a set of new old stock 12 bolt posi 390's for my
1967 Pontiac GTO 400 HO?
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Old 09-05-2003, 09:27 PM
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Re: Head I.D.

Quote:
Originally posted by gto401
the #731 head is a production #- 9792731, the original part # is 9792700 , the head cast should be #31 . the valves are 2.11/1.77 with a 72 cc chamber an it's a 1968 400 RA (RA1)
Thanks for the info, that's kinda what I thought. Would you care to speculate on their value?
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