First year 440 cylinder heads?

sloinker · Nov 15, 2020

440 out of a 1966 Chrysler New Yorker and AFAIK original heads to the block have a casting # of 2406516-8
Research indicates these heads were used on 413's and B blocks but were they OE for the 440 in the first year?

Don Frelier · Nov 15, 2020

Yes, I believe they are.

Tony Tee · Nov 15, 2020

sloinker said:
440 out of a 1966 Chrysler New Yorker and AFAIK original heads to the block have a casting # of 2406516-8
Research indicates these heads were used on 413's and B blocks but were they OE for the 440 in the first year?

This is from my MOPAR BIG BLOCK B-RB book. Pardon my penciled in notes.
Not sure if this will help answer your question? But it's a handy ljst.

Jerry Hall · Nov 15, 2020

You are correct 516 heads on 66 440's and 67 383's. 67 440's went to the one year only 915 heads and in 68 both the 383 and 440 got 906's until 1970.

sloinker · Nov 16, 2020

Here's the motor info. None of the printed literature I have seen supports these heads on this block but I'm 99% sure they are original. Thanks for the info fellas.

Kern Dog · Nov 16, 2020

Tony Tee said:
View attachment 1027316
This is from my MOPAR BIG BLOCK B-RB book. Pardon my penciled in notes.
Not sure if this will help answer your question? But it's a handy ljst.

Your penciled in notes as to the combustion chamber volumes are a bit off!

Joe66satellite · Nov 16, 2020

Kern Dog said:
Your penciled in notes as to the combustion chamber volumes are a bit off!

Sorry to hijack This Thread guys but what's that narrow Rod I see in my 440 heads off of my 1970 block 440 in the water channel

Jerry Hall · Nov 16, 2020

sloinker said:
Here's the motor info. None of the printed literature I have seen supports these heads on this block but I'm 99% sure they are original. Thanks for the info fellas.

View attachment 1027372 View attachment 1027373

Your heads on that block are 100% correct. What you have is a 66 350 HP 440 steel crank engine for a C body. In 66 B bodies went straight from the 383 to the Hemi. 67 was the first year for a 440 in a B body.

66Satellite47 · Nov 16, 2020

Yes the 516 head was std on 64-67 383's, '64-66 426W's. Don't know about '66 440's??

Tony Tee · Nov 16, 2020

Kern Dog said:
Your penciled in notes as to the combustion chamber volumes are a bit off!

My penciled in notes are from another page from the same book. But just ignore them. Maybe someone has a better more complete list .?

Tony Tee · Nov 16, 2020

Joe66satellite said:
Sorry to hijack This Thread guys but what's that narrow Rod I see in my 440 heads off of my 1970 block 440 in the water channel

I asked my machinist the same question on my 516 heads. He thinks? it was a vent channel to make sure the cast iron gets to where it needs to go. 516 heads don't have the freeze plugs on the ends so maybe it needed help casting it??

Kern Dog · Nov 16, 2020

Tony Tee said:
My penciled in notes are from another page from the same book. But just ignore them. Maybe someone has a better more complete list .?

That writing in pencil looks similar to the "blueprint specs" that has been published elsewhere. It is quite a bit off the mark of actual size chambers. I am just a regular guy but I checked 5 heads over the summer and 3 of them were 90 ccs, one was 88 and one that was milled .030 came in at 84 ccs.

Tony Tee · Nov 16, 2020

Kern Dog said:
That writing in pencil looks similar to the "blueprint specs" that has been published elsewhere. It is quite a bit off the mark of actual size chambers. I am just a regular guy but I checked 5 heads over the summer and 3 of them were 90 ccs, one was 88 and one that was milled .030 came in at 84 ccs.

Yea, I don't know. I'm no Mopar cylinder head expert. I just posted the list that's in my book and I didn't want to erase my notes. I'm sure there are differences. And I myself have many heads on the shelf that I have not checked.. so don't go by my notes. But it sure would be nice if someone could post a better list .

66Satellite47 · Nov 16, 2020

The cylinder head cc data that is in the Mopar "bibles" is basically the NHRA "legal" minimum spec. An un-milled head would be 6-8 cc's more than those min's. My virgin 906's were all in that 86-88 cc range, 915's in the 80 cc range.

OKDart · Nov 17, 2020

Tony Tee said:
Yea, I don't know. I'm no Mopar cylinder head expert. I just posted the list that's in my book and I didn't want to erase my notes. I'm sure there are differences. And I myself have many heads on the shelf that I have not checked.. so don't go by my notes. But it sure would be nice if someone could post a better list .

One thing to add to your list that I just learned while working on a 1968 383, is that before the 906 came out, they used 250 heads on early 1968 engines. 250 heads are open chamber, and don't have the freeze plugs in the ends just like other earlier heads, but have bigger valves like the 906's. I'm not sure what else is different about them.

62 Dart Convertible · Nov 17, 2020

OKDart said:
One thing to add to your list that I just learned while working on a 1968 383, is that before the 906 came out, they used 250 heads on early 1968 engines. 250 heads are open chamber, and don't have the freeze plugs in the ends just like other earlier heads, but have bigger valves like the 906's. I'm not sure what else is different about them.

Got a full part number?

OKDart · Nov 17, 2020

62 Dart Convertible said:
Got a full part number?

2951250

It's listed on this link for 440, but should be 383 too:

http://www.mymopar.com/headcastnumb.htm

66Satellite47 · Nov 17, 2020

OKDart, Thanks for that info. I've never seen that casting. I collected many BB heads in the 80's, at least 30 from the '65 to '78 motors, never saw those.
It would be interesting to see what's different between a 250 and a 906 head.

OKDart · Nov 17, 2020

66Satellite47 said:
OKDart, Thanks for that info. I've never seen that casting. I collected many BB heads in the 80's, at least 30 from the '65 to '78 motors, never saw those.
It would be interesting to see what's different between a 250 and a 906 head.

The main difference I’ve noticed, is no freeze plugs on the ends. In their place is an extra bolt hole on one side, and the other just a flat boss.
Pics show the orange engine has 250 heads, the turquoise engine is a 66 and the same heads as OP 516. The loose heads are 906.

YY1 · Nov 17, 2020

Didn't the valve sizes change in the 516 casting?

First year 440 cylinder heads?

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