How much would you guys pay for a set of these heads? He says they are from a 406. They have all the valves, springs etc, there is some light rust on them. Looks like he did keep them as oiled as he should of. Any idea what they are worth? Thanks

 

Well those are true 406 heads. If they still have a good thumb print and in good condition they can range from $500-800. Those heads do have a larger 1.65 exhaust valve stock. Most books list them at 1.55 but mine were a virgin set of C2SE-C's and indeed had 1.65 valves stock from the factory. Smaller chambers at 67 cc's. If you can pick them up cheap grab them. They are kinda rare and the date codes should be close to each other. The set I had were both 2J20's (62/Sept/20) and matched the block exactly. I've kept track of the date codes of the C2Se-C heads as I see them for sale. Seems the most common are both Sept and May of 62 date codes. J for Sept and E for May. Most of these 406 head castings are within a few days of each other if not the same day. FWIW....

G.

 

So what does the smaller chamber size do for me? Wouldn't that also increase my compression? How do the exhaust size on these compare with gt heads and stock 39- heads from trucks? Sorry not a head guru by any means.

 

Well the heads flow much better than the GT style heads...and your compression will go up from the smaller chambers..

These heads are like the C4AE-G heads and the rest of the Tall port heads but they have the smaller combustion chamber in them...Real good for making HP..with the right pistom and head gasket..and they have an excellent quench area !!

Depending on what your building ?? they may or not be the heads you want to run..But if you can get them cheap enough..you can sell them and get something better suited for your build? JMO..

RJ

 

And to add the C2-C heads only use the vertical 8 bolt pattern. So be sure your exhaust mani's will work with that. FE heads cam with 8, 14 and 16 ex bolt patterns for different ex mainfolds/applications. Russ is right...you won't lose money. My 406 block (.030) and C2 heads sold for $3600 on ebay. I only had a $1600 reserve and was selling both heads and block together!!!! 2 guys were betting the farm and their left nuts against each other to get them!!! Unreal! The 406 was only a 1 year production. So there wasn't all that many to start out with. From what I've found out less than 1000 cars (Galaxies) were produced from 62.5-63.5 with the 406. Maybe a handfull of Mercs too??

G.

 

Well I got ahold of the guy, yep he still has them. He says the last letter on the right might be a B, he said its hard to tell. Does this matter? I'll be able to get them for $400. Says there are stainless valves and higher perf springs on it also. Good deal?

 

If they are C2SE-6090-C or B then they are both 406 heads. As long as both still have good thumbprints and have not been shaved to death then yes good deal. There were only 2 real 406 production heads and the C2SE-B and C are them. There was a super rare C3AE-C that was supposedly a race only 406 head. With very small 58 cc chambers and spring cups. But watch out because there is also a C3AE-C 390 head. The 390 C3-C head does have larger 67 cc chambers and guys see the C3-C listed as 406 heads and advertise them as such. When they are really just stock 390 heads with 2.02/1.55 valves. So be careful of that. The C3-C heads are still very good...just not a true 406 head and price should be about half. FWIW...

G.

 

Thanks you guys, I appreciate it. I'll post again after saturday with pics in the gallery. TTYL

 

I got'em! Holy crap those valves are huge!! I got these babies for $450. He balked a bit about me only paying $400. Oh well. Pics are in the gallery. What do you guys think?

 

I think you did really good!!! They look really nice!!!! Those are pretty rare heads and will always hold their value...beleive me!!!

Congrats on the nice score!!!

G.

 

Yep Nice score Man!! Those heads will make some killer compression , great quench, and with the ports cleaned up, damn good flow also!! Looks to me Like the Valves are 2.090 Int. and big 1.720" Exh.. the larger Exh. valve will hurt a litle bit on Torque down real low arount there 2000 tp 2500rpm range...But it will make up for it in the midrange and upper rpm range! But they may not matter depending on what cam you decide to go with..

Thats why with my latest build , I had to go with a custom grind cam..In order to work with only using 1 3/4" primary headers.. All that has to work in harmony!!

But Like G said..those are rare heads..and if sold to the right person ..would make up a good chunk of money toward Edelbrock heads for youself! JMO..

RJ

 

Sweet thanks you guys.