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#1
03-17-2021, 09:01 PM
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Head identification
Doing some research on these heads. They were on a 400 but do not know for sure they came on it from the factory. The 400 was a mid 70 block. The heads have press in studs, they look to have the 1.96/1.66 valves. didnt measure them but definetly not 2.11 intake valve. The date code as I read that it indicates a April , 08, 1981. #15 on the center exhaust port.
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#2
03-17-2021, 09:23 PM
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1968 #15 heads, 400. D088 is date code april 8, 1968.
Sent from my Moto Z3 Play using Tapatalk
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#3
03-17-2021, 10:49 PM
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thepontiacman is right. They were used on the 290 and 340 horse big car 400's. 10.5:1 advertised compression.
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#4
03-18-2021, 06:08 AM
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I have 2 sets of 1968 #15 small valve heads and both sets have the air injection passage running the lenght of the head above the Exh ports.
I think these may be the #15 small valve casting from 1970 which is also 87 CCs and pressed in studs.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#5
03-18-2021, 06:43 AM
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1968 #15 heads may have AIR passage like earlier heads depending on if they are early 68 casting.
Later 68 heads look normal and don't have that. I probably have a set of the 68 #15 that are early casting. If I do, I will get a picture, I have had #16 big valve heads that were cast like early heads. These were on a 68 YS 400. Lots of mid year changes in 68. Intakes changed casting number. Sent from my Moto Z3 Play using Tapatalk
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You never know what I might have that you are looking for. EMAIL me. Also check out my other ads here on PY. Just click on user name to view other ads. USPS Money Orders or Wal-Mart to Wal-Mart money gram wire transfer -preferred payments. If Payment doesn't show up in 3-4 days, I move on to the next person that wants it. Serious Inquiries Only - Shipping Isn't Free. |
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#6
03-18-2021, 08:37 AM
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Quote:
Both from slots in the screws that held the date tag on the raw casting used to make molds. Clay |
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#7
03-18-2021, 11:52 AM
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I agree that those are 1968 castings;
The date code makes it air tight. I have had a couple sets of 1968 #17 (small valve 350/2bbl heads); One pair was casted for air injection, the other wasn't. Those are probably great heads as-is; It's my opinion that the pre-1971 small valve heads are often undervalued for what they are, they give you compression where later heads do not, and many might be surprised at how much power is gained from using them to replace a set of stock (oh let's say) 6X heads.
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