I'm still working on this 429 and I'm in the process of porting the exhaust side on my DOVE haeds. I did the intakes a few years ago but was scared to get into the exhaust very much after getting into a water passage. I'm down to my two good DOVE heads and one rusted up C9VE head. Question is, Are these two the same heads as far as wall thickness in the ports?? I'd like to take the C9VE head and have it sliced in various places, to have an idea where I can open things up without getting another hole into the water passages. My main concern is the bottom of the port, looking at it combustion chamber down. That's where I struck water last time. Thanks for any response. Any links to some websites with pics and/or advice on these heads will be appreciated also. Later.
C9VE and D0VE heads are so damn identical that you can run a C9VE on one cylinder bank and a D0VE on the other cylinder bank and your engine won't know the difference. The only difference you may or may not
find is that the D0VE head might be drilled for smog pump passages or it might not (C9VE's are never drilled for smog pump passages).
When it comes to porting the 429/460 factory iron, DO NOT lower the floor of the exhaust port as you have described (and hit water). The "short turn radius" (the tight corner/turn of the exhaust port floor that turns down to the valve seat) should be smoothed but not lowered....and there are other tricks in this area.
The C9VE head is a fine cylinder head...one of my personal favorites, and I cringe at the idea that you want to cut it apart! If you must section a cylinder head, then cut the junk D0VE head in which you already hit water.
Lastly, the best thing you could do right now is subscribe to the Ford 460 head porting website. For a measely $25 you will be able to navigate through dozens and dozens of pictures and detailed written explanations on very effective porting techniques for these heads. The $25 invested is much, much less than the cost of replacing the head that you destroyed...and will save you from hitting water in other places.
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