Technical Identify Ford 260 Heads

I'm looking online and I can't find accurate information on what cc heads these are. All the casting charts I found on the internet contradict each other. I think they're the 49.2 let me know if I'm correct please. I'm not looking for opinions I'm looking for facts. Thank you

 

If you want facts, get them cc'd at a machine shop. No telling how far off the castings are, how much the seats or valves have been cut, how far they have been surfaced.

 

Ford Muscle Parts Book says 53cc Min.

 

As I mentioned online and the Interchange books have information, that's why I'm hoping to find somebody that actually knows about the head and not looking for information online or in a book because I'm not sure which one is correct. Thank you

 

The shape of the combustion chambers are different shapes as far as I know, I just dont know if this is the smaller chamber they considered the kidney bean.

 

there's a set of 221 heads on ebay right now, with the smaller chambers, you can see that the ones you're looking at are larger, so they'd be 260, not 221 heads



comparison

 

Are they the smaller chamber? They had the same chamber as the 289

They look just like the 289 heads that are 53cc, 54cc, do you see my confusion? And if you look at the casting number on the eBay heads they're not 221 or 260 heads more misinformation.

 

didn't notice that, so yeah, I can see why you're confused!

the heads you're looking at do have a kidney bean shaped chamber.

I expect you don't own them yet so you can't cc them?

 

I'm trying to make sure I get the right ones, not turning out to be very easy. Here is another set of C4OE heads that are supposedly 49.2

 

Found this here, the 45 cc heads were first on C20E 221. Most common are the 49.2 or 54.5. Should be able to tell measuring the intake valve.

https://www.enginelabs.com/engine-tech/engine/reference-ford-ohv-cylinder-head-casting-numbers/

Same dash letter differences with C40E


C3OE – 1963, 289, Windsor small-block, 1.67/1.45 valves, 49.2cc chambers. Hi-Po

C3OE-A – 1963, 221, Windsor small-block, 1.59/1.39 valves, 45cc chambers

C3OE-B – 1963, 260, Windsor small-block, 1.59/1.39 valves, 49.2cc chambers

C3OE-E – 1963, 289, Windsor small-block, 1.67/1.45 valves, 54.5cc chambers, Hi-Po

C3OE-F – 1963, 289, Windsor small-block, 1.67/1.45 valves, 54.5cc chambers, Hi-Po

 

I have this if ot helps

 

Looks like 54.5cc c3OE-B

 

That helped. Thank you

 

Thank you but almost all the information that engine lab has listed is incorrect. Thank you though

 

What book was that?

 

Pat Ganahl lists chamber size from 52.0-55.0 cc, av. around 53. Who knows after 60 years.

Joe

 

For others who come across this thread, a very reliable book is "Mustang & Ford Small Block V8" by Bob Mannel. The book is based on his decades of research on physical parts and Ford factory literature.

That book says that the C3OE B head (1963 260) that's the original subject of this thread is a repeat of the C2OE F head (1962 260), which is claimed to have a combustion chamber volume of 53.0 -56.0 cc.



As has been mentioned, it will be reduced by the resurfacing done to the head.

 

A local old timer sent me that Pic. It is from his Ford crossover book. I can ask him what bood specifically but might take a few days to get a response.

 

^^^^ that page is out of Tom Monroe's book "How To Rebuild Ford Small Block Engines". I have a copy. Excellent reference manual of mix and matching heads and blocks to get the CR you want.