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02-14-2021, 08:11 PM
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#1 |
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Junior Member
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307 sbc head
Could someone give me the casting number and conbustion chamber. Thanks
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02-14-2021, 08:51 PM
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#2 |
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Location: san antonio tx
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Re: 307 sbc head
Blue print specs on NHRA site or ask Billy Nees.
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02-14-2021, 09:07 PM
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#3 |
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Re: 307 sbc head
Year & model??
If your looking for NHRA specs: http://www.nhraracer.com/ Go to the year and model specific specs. For just General specs: http://outintheshop.com/faq/casting/castings2.html Hope that helps
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Adger Smith (Former SS) |
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02-14-2021, 09:43 PM
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#4 |
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Re: 307 sbc head
Thanks big help
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02-15-2021, 09:32 AM
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#5 |
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Re: 307 sbc head
Why would anyone in their right-mind be asking about 307 head castings???
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Billy Nees 1188 STK, SS I'm not spending 100K to win 2K |
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02-15-2021, 05:50 PM
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#6 | |
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Re: 307 sbc head
Quote:
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02-15-2021, 07:35 PM
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#7 | |
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Re: 307 sbc head
Quote:
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Billy Nees 1188 STK, SS I'm not spending 100K to win 2K |
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02-16-2021, 09:19 AM
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Re: 307 sbc head
Quote:
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02-16-2021, 11:16 AM
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Re: 307 sbc head
Quote:
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Duane Hoven 1342 SS/GT |
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02-15-2021, 09:56 AM
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#10 | |
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Re: 307 sbc head
Quote:
1973 is an anomaly. That year the 307 is shown using 333881, 333882, 3973493 and 3998993 heads. The specs also show 1.94" intake and 1.50" exhaust valves with the same 66.1cc combustion chamber as the '71-'72 heads. These are normally considered "350" heads with large ports and a wider combustion chamber. I could easily doubt that those are the correct production heads since Chevrolet did not use those large valves on small bore engines (except the '60-'61 283 high perf Corvette engines). Maybe another gift from the NHRA tech department and an errant data entry person. But, being legal doesn't always mean being "right".
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Last edited by Dwight Southerland; 02-15-2021 at 10:04 AM. |
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