d0ve-c headwork

[bb429power]

How much can you port d0ve-c base heads for a 1971 429? I would like to get rid of that lip just on the inside of the intake ports. But the wall of it looks pretty thin. Also what are the largest valves you can put in it without boring the cylinders? My machinist says the max he can go is 2.12 intake and 1.76 exhaust, but I've heard people put a bigger intake valve in it. They aren't cobra or super cobra heads. And by the way, if its just a base block then is it considered a thunderjet? Think so just want to hear you input.
Here's the lip, you can kind of see it like a quarter inch in. What is that exhaust passover through the intake for?


What does the number 13 mean?


-Thank you

[BobbyFord]

Do yourself a favor and join Scotty's site: http://www.reincarnation-automotive.com/index_2.html
For a one-time $25 subscription fee you can learn all you need to know about porting 385 series heads. Scotty has gotten 730HP out of ported iron D0VE heads.
The number on the block is just a casting number. 429's and 460's both had a 460 casting in that same spot (some had a 460 mirror image). To determine whether yours is a 429 or 460, look at the crank casting number found on the side of the front crank throw:
429: 4U, 4UA
460: 2Y, 2YA, 2YAB, 2YABC and externally balanced '79 and later 460 crank has a 3Y casting.

[bb429power]

I know it a 429 for sure, but i was wondering if the 13 stood for the thirteenth built (doubt it) there's also a thirteen on the trans so they are matching. I discovered that website a couple of weeks ago. Thought it was pretty cool. Thanks.

[Hawkrod]

13 is the mold number. All molds were numbered so if there was an issue they would know which ones to pull. Hawkrod

[Doug F]

The old trick was to blue the head face and take a head gasket and scribe the head face with the gasket port shape, then take a high speed grinder and "gasket match" the head, then do the same to the intake. Be sure to just taper it in, otherwise you can break through to the water jacket Also, don't think about polishing them, it hinders the atomization of the fuel and causes "wet-out"

[eggman918]

As little metal removal as is possible , all you want to do is lessen the turbulence at the gasket
not to change/enlarge the runner,unless you know what you are doing
It is EASY to screw it up

[cdeal28078]

Do yourself a favor and join Scotty's site: http://www.reincarnation-automotive.com/index_2.html
For a one-time $25 subscription fee you can learn all you need to know about porting 385 series heads. Scotty has gotten 730HP out of ported iron D0VE heads.
The number on the block is just a casting number. 429's and 460's both had a 460 casting in that same spot (some had a 460 mirror image). To determine whether yours is a 429 or 460, look at the crank casting number found on the side of the front crank throw:
429: 4U, 4UA
460: 2Y, 2YA, 2YAB, 2YABC and externally balanced '79 and later 460 crank has a 3Y casting.

I 2nd the motion of joining Scotty's site. There is all kinds of info on there about the 385 engines not just head porting. Well worth the $25 to join.
Clint

[Dragon]

They sell 2.25 intakes for it Like the ones for my EDC heads when installed they will get cut down to 2.23. So it is safe to assume you can get close to 2.25.

[bb429power]

Also, don't think about polishing them, it hinders the atomization of the fuel and causes "wet-out"

HAH!,I knew it. I always had this theory that a rough port would be better because it would help atomoze and stir up the air/fuel mixure.

[bb429power]

Here's the heads. Valves are going to be 2.12/1.76. Still have to grind some stuff down and pocket port.

[Dragon]

We used to work them smooth as glass for blowers and then because my shop was good at doing that super polish we would shot peen the intakes to slightly roughen them up.

[Doug F]

Sure polishing your ports has its place... Polishing the exhaust ports is ok, just not needed and takes a LOT of time. Forced induction and port fuel injection are also prime candidates for polishing, carbs need all the help they can get to keep your fuel flowing and not leaning out cyls!

Mighty fine lookin heads you got there!