got a question about cilinderheads.
i got a 460 with D3VE-A2A heads.
my question is can i use C8VE-A2A heads without modifications?
i also want to change my camshaft but don`t know wich i must choose. i hope you can help me.
greetings from holland

 

C8VE- A2A CYLINDER heads ???

Never heard of them.


Maybe C8VE-A or B heads.

The A2A suffix is a change-up group of letters/numbers

They would never have had that many changes back then.

The D3VE- A2A sounds right for about a 1975-76.... 460

 

I'll chalk it up to a misreading. Yes, you can use the earlier C8 heads no problem without any mods. As far as cam choices go...your best bet is to contact via e-mail or phone the cam manufacturer of your choice and ask for their recomendation given your combo. Most of them have tech lines just for this. Have fun with your 385 in Holland

 

thanx

yes you`re right they are C8VE-A heads, i`m sorry.
but here is another question.
what`s the difference between C8VE-A and D3VE-A2A heads?
they told me that C8VE-A heads have bigger intake and exhaust valves and bigger exhaust ports. and the combustionchamber is 75 cc. is this true? wanne know it for sure before i`ll buy them.
and what`s the price of a set of C8VE-A heads in the USA?

hope you can help me
greetz from holland

 

Lincoln
This is true. Going rate for a set of C8VE's here in the States is between $150-$700, at least here in Central Illinois.

 

going to the c8 will bring the compression up quite a bit

 

What Brian460 says is true, as the combustion chamber is almost a full 20 cc's smaller on the C8's. This will bring the compression up about 2 full points, which would put the 8:1 motor at right around 10:1, which is fine even with pump gas, as you introduce the quench effect.

 

thanx to y`all

 

You Might want to CC the heads before you plan on buying for that compression.I have a set of c8ve-a heads and their 78cc I then checked my other set of dove-c and dove a heads and came up with 76cc.The test was done with the same plug and valves.

 

There will be variance from head to head a few cc's, but '72 and up have big 92cc-98cc chambers where as the 71 and older have smaller 72cc-78cc heads.

This was done to lower the compresion and make better emissions.

 

Most C8's, C9's and D0VE's have around 76-78 cc chambers. The only heads that had 72 cc chambers were the D0OE's (Cobra Jet heads). The difference between typical D3's and C8's should raise your CR to around 9.5:1. Of course these numbers can be significantly altered depending on decking of the block, milling of the heads and even valve seat work. New seats can put the valves further into the chamber and significantly decrease the combusiton chamber size. Also polishing the chambers will affect it. My D3's are 99 cc's. That's with the valves unshrouded and full chamber polishing as well as new seats and thick valves.

 

The D0VE's in the race engine CC at 68. That, of course, is after milling .040, replacing stock valves with 2.19 int., 1.76 exh. valves.

 

Right. Stock they are about 76-78. Your heads prove the point that any machine work done can change the CC size dramatically. It's always best to do all your head work then CC them then buy pistons accordingly (or have your pistons milled if need be).

 

I have seen C8-D1 heads as low as 74 cc's. D0OE cylinder heads range from 70-74 cc's, stock.

 

I know it seems like we are arguing over 2 cc's, but that's my point. You really have no good idea what the heads are until you CC them. Remember, these pieces are 30 years old. A lot could have been done to them in the meantime. 2 cc's is not a big deal, but if they started out at 74 instead of 78, then you throw in new seats and valves, your down to 72. Then you mill them and you are down to 69 cc's. All of a sudden the engine you thought was going to be 9.5:1 is actually more like 10.4:1. Then you put on a head gasket and you don't think to calculate that it's actually on 0.035 thick instead of 0.040 and the circumference is only 4.39 instead of the 4.50 you thought it was and dang it, this engine won't run on pump gas for *****!!!!