$$$$$

www.429-460.com

 

http://www.429-460.com/t9459-641-c-head-1170-hp

http://www.429-460.com/t10169-1200-hp-with-single-carb-c-head

 

The E head is also an alternative. Proven to be 15-20 cfm better than a C in the right hands.

 

IMO, at 598" its not worth the dough. Although the flow numbers look little better im not sure its enough cubic inch to take advantage of a c head.

 

I built a 605 BBF with C460 heads. It made 1207 at 7600 rpm and runs 4.70's all day long in 5500 DA air. The A heads will not get there without spending a lot more money. The C heads flowed 520 at .900. This is in a 2000 lb. 4-link dragster.

 

I built a 605 BBF with C460 heads. It made 1207 at 7600 rpm and runs 4.70's all day long in 5500 DA air. The A heads will not get there without spending a lot more money. The C heads flowed 520 at .900. This is in a 2000 lb. 4-link dragster.

Sounds like you've got problems somewhere.

 

Hey, I'm sure this topic has come up before. But basically I'm trying to figure out what a swap from an 'a' head to a 'c' is worth. It would be on a 598" bracket racing/top sportsman deal. We have an extensively worked set of 'a' heads on it now. Been 7.94 @ 172 and from what we've been told we're close to the limit of that head. Its my dads car and he wants to get it to where he can run fast enough to run some TS without spraying it. How much work would a 'c' head need to to out-perform an all-out 'a' deal?

Operating RPM ?

460Ford.com

G

 

Thanks for the feedback guys. Launch rpm is 5800. Shifts at 7400 and hits the traps at 7800-7900. We've ran the car with 4.10s and 4.30s in the rear. With the 4.10s it goes thru around 7500-7600. It mphs better with the 4.30s tho. So it must like the rpm

 

being that its in a lightweight car it may be worth looking into a tunnel ram and 2 carbs if it doesn't already have it..the track flow cast tunnel ram is a good bang for the buck

 

Do some more work on the heads, and fully port the tunnel ram, and possible cam change!

 

what size runner/valve arrangement? what do they flow?

Most go i nthe 450cfm range, while some go in the 470-480 range by better porters,valve jobs.
and Charlie Evans has some going 500cfm with the newer casting , so you might just be able t ostep yours up. also if you do change, I would look at going to the Profilers over the C heads. they (profilers) will go about 540cfm

 

My dad has the flow sheet somehwere but can't seem to find it. I know they flowed 460 cfm on the intake side. 2.45 intake 1.88 exhaust. The engine is out to be freshened right now. Unfortunately he's kind of on a budget right now and the rebuild is going to be pricier than he hoped because the valves are all shot. So there won't be an upgrade this winter. Our engine builder is gonna try a different cam and see if that is worth a little power

 

If your going to upgrade to C stuff, get the A205 profilers, they are better than the C460 ford racing stuff. Plus the castings are much nicer and they come with copper seats.

Their are also a number of other A460 variations avaliable, Charlie Evans has some TFS heads that are pretty interesting and unconventional and also IDT has some stuff worth looking at.

 

Dave,
Over on your site there is Oakley's 642 C head, single carb @ 1250 HP. This one is a mud engine. Then there is Charlie's 632 Profiler @ 1250 with 2 carbs. This one is in a door car.

Does anyone have some ET slips to verify if the Profiler is quicker than the C-460?

 

IMO if your trying to get the most out of a N/A motor you need to step up from the A460 heads.
Give these a look http://www.mbellc.com/index.php/c460-bb-ford .

 

first time Ive seen a company have a higher flow number on there A heads than there C heads. very intersting.

 

If you want to make big power have a look at the THOR head.
http://www.460ford.com/forum/showthread.php?t=115456

 

If you want to make big power have a look at the THOR head.
http://www.460ford.com/forum/showthread.php?t=115456

To hard to get the F'n things..........

 

Thats the bad part, only a few runs per year of the Thors and 4.3's it seems.

 

Complete set of Thor Heads w/ Intake, Jesel Rockers, Titanium Valves, cast 2 piece intake and available with or without a Speedtech Tech 1 Fogger if any of you guys are looking for a set PM me.

 

If you are wanting to go past the C heads I have several sets of E460 heads for sale.

Chris