I have a set of dove heads and d2ve a2a heads, and i was going to build a 460. My question is what heads to use, and I normal would say dove but the d2ve heads are an open chamber design. This head would also allow me to run flat top pistons and still have compression. So the question is is the open chamber a better flowing head i.e. less valve shrouding or is a close chamber head better. I also have d3ve head that are closed chamberd so the d2ve a2a must have been used for one year only. Which ever head I use it will be ported and 2.19 and 1.75 valves installed.

 

Open chamber kills torque because no quench area is provided. The DOVE's are also set up to run a stud mount valvetrain.

 

I realize that open chambered heads don't provide the same type of quench that closed chambered heads do but how does the kill the torque?

That aside the D0VE heads will provide a significantly higher comp. ratio than the D2s or D3s becasue of the smaller cc comb. chamber so you will have more power. I'd use those as the basis for my build up.

 

well what do you have in mind for performance? do you want a daily driver with gas mileage in mind, or do you want a weekend street cruiser that doesn't mind getting filled up every other day? what is your budget or do you have one? remember to think it through, you can't tear it apart and start over when you spent all of your hard earned dollars because it spark knocks like crazy? sorry i'm not preaching it's just you know how hard you work for your money. you don't have to have quench to make power!! that's a myth chilly390! absolutely a myth! let us know what your plans are for this build so we can better get an idea for ya, ok? both heads will work almost the same.. C.J. later............................................. ....

 

[font size="1" color="#FF0000"]LAST EDITED ON 20-Mar-01 AT 12:21 PM (EST)[/font][p]The motor is going into a 79 4x4 with 36" swampers. It will be daily driven but not long trips, except to pull my boat. I was thinking the d2ve head because then you can run flat tops instead of those grand canyon piston that came stock and have about 10 to 1. D0ve heads and flat top bring 11.6 to 1. In a 429 the dove heads are the only way to go but in this 460 I don't know. Is it better to have dished pistons and close chamberd heads or flat top and open chamber heads? The d2ve heads look like the valves are less shrouded. Has any one flowed these heads to see if they flow better. The heads will also have adjustable valve train so the heads will need machine work. The cam, I was thinking comp 270 x 4x4. 270 278dur and 544 564 lift

 

well that's a good question which piston verses chamber configeration. i'll tell ya if you want good all around performance use the D2VE-A2A heads, with 19cc. dished pistons you would be at 9:6.1 compression this i know for sure. that's what i'm running now, and with flat top pistons you will be around 9:8.1 compression maybe at 10:1 this is a pretty close guess, remember your boring the block so your increasing the volume lowering compression. which ever one you turn to use be sure to port the exhaust if your not familiar with these heads, and use a good set of headers like L&L they say a 40 h.p. increase just bolting them on. i put a set on my ford truck and it was like going a 2bbl. to a 4bbl. that noticable. the DOVE heads are excellent also but getting into that range of higher compression and you can't really experiment when you only have money for one set of heads. but there are other folks here that can and have gone that way to give you advice on that. my opinion would be go for my first choice with the 19cc. and the D2VE-A2A heads i can run 18 degrees of initial timing and don't have to worry about spark knock. you can still shave the heads and come up in comp. to around 9:8.1 with this set up. well that's my say and everyone else will let you know on there experience. hope this gives you some fuel to think on. C.J. later......................

 

>[font size="1" color="#FF0000"]LAST EDITED ON 20-Mar-01
>AT 12:21 PM (EST)[/font]
>
>The motor is going into a
>79 4x4 with 36" swampers.
>It will be daily driven
>but not long trips, except
>to pull my boat. I
>was thinking the d2ve head
>because then you can run
>flat tops instead of those
>grand canyon piston that came
>stock and have about 10
>to 1. D0ve heads
>and flat top bring 11.6
>to 1. In a
>429 the dove heads are
>the only way to go
>but in this 460 I
>don't know. Is it better
>to have dished pistons and
>close chamberd heads or flat
>top and open chamber heads?
> The d2ve heads look
>like the valves are less
>shrouded. Has any one flowed
>these heads to see if
>they flow better. The
>heads will also have
>adjustable valve train so the
>heads will need machine work.
>The cam, I was
>thinking comp 270 x 4x4.
>270 278dur and 544 564
>lift

I know this is off the subject but...the first thing that came to my mind when I read this was he's either got a VERY light boat or with a 270 Comp cam and 36" tall tires he'd best be running 4:10s or 4:30's as a MINIMUM. Just my two cents...

Deen Hylton
Ford F250 460 C-6, K&N, Headers, Dual Exh.,Comp. Cams,Shift Kit
Pioneer CD w/Bose Speakers.
Other Passion: Blown 77 Corvette (Sorry Guys/Gals)
How I can afford to Drive the above: 93 GEO Metro

 

I phoned comp cams and they picked the cam for me. It is one of there new extreme 4x4 cams made for low end torque. I have a 429 with 10.5to1 and run fine on supreme with 16 intital timing so I was thinking around 10 to 1 for the 4x4 would be good.

 

BTW, if you bore your engine you are actually increasing the stroke volume and that will INCREASE compression, not decrease as was stated in an earlier post.

 

As far as the cam goes, it will need a higher stall converter. Do you have one or are you prepared to get one? Without it, you'll wish you would have gone with the 262 Xtreme 4X4.

 

its a 4 speed

 

I agree with CJ, the non-quench & open type chambers will yield about the same power with equal compression ratios. One of the reasons why Ford went back to the quench-type head after '72 was because they were a little more efficient & better for emissions purposes. Car Craft magazine did a build-up on a 460 using a D1VE block (10.322" deck height), 28cc cast dished pistons, DOVE-C heads and this combo had the MONSTER COMPRESSION RATIO of ....... ONLY 8.82 to 1. Thinner head gaskets & boring the block .030" over would bring up the comp. ratio a 1/2 point or so, but definitely still streetable. Looking at the article, these knuckleheads wouldn't know the difference between a 460 block and a cinder block. They still made 433 h.p. & 491 ft. lbs. torque from 8.82 to 1 comp.


Todd
BB79RANCH