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994 casting NASCAR heads
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dbomb View Drop Down
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Joined: Jul/22/2012
Location: new jersey
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Points: 705 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dbomb Quote  Post ReplyReply Direct Link To This Post Posted: Dec/03/2017 at 7:16pm
Would be ineresting to see mods done to some of these heads   Maybe you fellas can snap a few pics when ya have a chance
rebuiling 73 amx need parts
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Hurst390 View Drop Down
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Joined: Apr/20/2008
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Points: 5818 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Hurst390 Quote  Post ReplyReply Direct Link To This Post Posted: Sep/11/2022 at 12:43pm
Did you ever use them?
SC/Hurst Rambler

11.62 120

100% Street Legal
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jcisworthy View Drop Down
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Joined: Jul/23/2009
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Points: 2805 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Sep/11/2022 at 2:36pm
Never used them. 

The seats were cut for 2.1 and I think 1.78 or something big on the exhaust. The valve job was terrible, the seats were sunk so I decided to install seat inserts and use 2.1/1.65 valves. 

Ended up hitting water in almost every hole I cut for a seat insert Cry

I welded on them with special rod and installed seats but have not finished them because I do not trust them. There is quite a bit of core shift on the exhaust seat inserts but they would work 

Don't know if someone moved valves around or the castings were poor quality. 

There are extra bolt holes with inserts to seal the water jacket that look a little iffy. I could fix that with a press fit on a larger insert so that would not worry me

All in all, they are usable if finished but questionable 
Specializing in dyno services, engine building, and cylinder head porting

rbjracing.com
Phone Number 518-915-3203
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Javelin_GT View Drop Down
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Points: 1066 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Javelin_GT Quote  Post ReplyReply Direct Link To This Post Posted: Sep/11/2022 at 4:17pm
My set of of 993 NASCAR heads are going on a motor.  Engine is currently being built.  Here are the flow numbers and a couple pics.
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