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#1
03-27-2014, 11:56 PM
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Can anyone give info on these heads???
Any info would help...Thanks
Date code is J057
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#2
03-28-2014, 12:25 AM
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2.11 1.77 valves. Open Chamber 72-78 or so CC chambers. Most I have checked have been higher than the advertised CC (in the 78 range). Should have screw in studs. Good higher compression D-port head. Date code looks to be 10-05-67 which would have been on a 68 car.
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#3
03-28-2014, 12:43 AM
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What he said! ^^^^^^^^
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Paul Carter Carter Cryogenics www.cartercryo.com 520-409-7236 Koerner Racing Engines You killed it, We build it! 520-294-5758 64 GTO, under re-construction, 412 CID, also under construction. 87 S-10 Pickup, 321,000 miles 99Monte Carlo, 293,000 miles 86 Bronco, 218,000 miles |
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#4
03-28-2014, 12:58 AM
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Thanks man, Are these one of the better pontiac heads or 6X heads?
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Last edited by johnny g.; 03-28-2014 at 01:05 AM. |
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#5
03-28-2014, 01:03 AM
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For a high compression D port they are about as good as it gets unless you get into early SD stuff. Very similiar to the 62 heads I am in the 11s with. Different D ports seem to have areas they "shine" in but overall those are decent to good heads.
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#6
03-28-2014, 01:08 AM
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Thanks Mike...
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#7
03-28-2014, 01:11 AM
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Good heads, they are pretty desirable. These are good for 400 engines. The 6X's are good for the bigger engines as they keep compression streetable in those. On a 400, the 6X head is very low on compression. 6X is a very good head otherwise. It actually has a better intake port than the 16's. With a 1.77 exhaust valve added in they are even better. Just too low compression for a 400 IMO.
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Paul Carter Carter Cryogenics www.cartercryo.com 520-409-7236 Koerner Racing Engines You killed it, We build it! 520-294-5758 64 GTO, under re-construction, 412 CID, also under construction. 87 S-10 Pickup, 321,000 miles 99Monte Carlo, 293,000 miles 86 Bronco, 218,000 miles |
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#8
03-28-2014, 01:43 AM
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my motor is a 400... So i guess am good with the 16 heads..
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