V-6 Head serial numbers
 

Trying to ID the application for this Sn; 23466811 with large valves, Magnum?
Have four of them. Also Sn: 243664--, the last two numbers are no readible.
atomman.

Re: V-6 Head serial numbers
 

I've got both Magnum intake and exhaust valves, here are the part numbers: Intake valve 2476368. Exhaust valve 2476374. the valves you have are much earlier part numbers, might be for earlier non Magnum 401 and 478 engines. I'll some of my parts books and see if those numbers come up.

Re: V-6 Head serial numbers
 

Thanks. The Sn: is cast into the head, I don't have them apart yet. Just picked them up 2 weeks ago. Unpacking the crates.
atomman

Re: V-6 Head serial numbers
 

So those were the part numbers for the cylinder heads? again they are very early numbers, my 66 401 Magnum heads first year production are part number 2421158.

Re: V-6 Head serial numbers
 

Attached are some pix showing the Sn: and valves in head.
Atomman:lolsmack2:

Re: V-6 Head serial numbers
 

The pic on the left shows the head with larger valves but the only way to know if they are Magnums is by the intake and exhaust ports. Gets some pics taken of the ports then I can tell you what you've got:ok:

Re: V-6 Head serial numbers
 

Attachment 4181

Attachment 4182
Couple of pictures showing difference magnum vs. non magnum. Bob

Re: V-6 Head serial numbers
 

Found an old post by BigblockV6 2/27/13 casting number for magnum head 2421158

Re: V-6 Head serial numbers
 

Yes I reposted that number nearly 2 hours ago:lolsmack2: Another part number used for Magnum heads in 1973-74 is 696030.

Re: V-6 Head serial numbers
 

I also like to point out that Magnum intake vales are 2 1/4 inches in diameter.