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What heads do I have?
#1
Turns out I had a blown hand gasket.  My car is supposed to be a Q code 4v.  Is that what these heads are ?  Closed chambers? Preferred head?


[Image: 20190219-190036.jpg]


[Image: 20190219-190029.jpg]

Thanks!
Wade
1972 Mach 1 351 cj 4speed
"We confide in our strength, without boasting of it; we respect that of others, without fearing it."--Thomas Jefferson

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#2
(02-19-2019, 07:12 PM)scgamecock Wrote: Turns out I had a blown hand gasket.  My car is supposed to be a Q code 4v.  Is that what these heads are ?  Closed chambers? Preferred head?


[Image: 20190219-190036.jpg]


[Image: 20190219-190029.jpg]

 They look like 1970 "D0AE-N" CC heads. Between the springs on the top side, you'll see the date code. take a pic of that and post it.
 If they are '70 heads, they are supposed to be 11:1. The 71 heads are D0AE-GA (GA where the N is located) and are slightly lower at 10.7:1
 Here is an example of a 71 head date code. It is 0 M 1. M is Dec, 1 the day, 0 is 1970. This head was cast on Dec 1st 1970. Sorry it's a bit out of focus.

[Image: IMG-3102.jpg]

I learn something new every day!
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#3
You might have the good heads. It will sound great with the high compression and a good cam. You can still get the high octane gas, even leaded around SC and NC make it pop.


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#4
Another thought, This might be a replacement engine, Certainly the heads are not from a 72. If the starter can be removed, can you see the engine block casting numbers and date code. You just may have a really good motor in that car, but unfortunately, not numbers matching.
Geoff.

I learn something new every day!
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#5
How do I tell what head gasket I need?

Thanks!
Wade
1972 Mach 1 351 cj 4speed
"We confide in our strength, without boasting of it; we respect that of others, without fearing it."--Thomas Jefferson

  Reply
#6
All 351C engines used the same head gasket. You cna get a complete gasket set for under $50.

https://www.rockauto.com/en/catalog/ford...+set,10392

Those are the D0AE closed chamber heads and are more desirable than the open chamber. I assume you also have the flat top pistons with the single valve relief? Definitely check the casting number and date on the block by the starter. If you're lucky it still has the original 4 bolt CJ block.


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#7
Be sure to put them on the right way. Will say FRONT in big letters. I you put on backwards will run hot.


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#8
Here are pics of the pistons and blown head gasket.  You can see where the #8 cylinder is cleaner than the rest.  It looks like both 7 and 8 were getting water.  

Can you tell by the pic what pistons I have?  They appear to be flat top single valve relief.
Btw, that's not metal shavings it is pieces of gasket.

The last 3 pics were taken after I cleaned the gasket surfaces up  with a scotchbrite pad.


[Image: 20190219-190004.jpg]


[Image: 20190219-190014.jpg]


[Image: 20190219-200015.jpg]


[Image: 20190219-200034.jpg]


[Image: 20190219-200047.jpg]

Thanks!
Wade
1972 Mach 1 351 cj 4speed
"We confide in our strength, without boasting of it; we respect that of others, without fearing it."--Thomas Jefferson

  Reply
#9
are these the intake and head gaskets that I need?

Intake - FEL-PRO MS96012
https://www.rockauto.com/en/moreinfo.php...&jsn=10527

Head gasket kit - FEL-PRO FS8347PT
https://www.rockauto.com/en/moreinfo.php...692&jsn=18

Thanks!
Wade
1972 Mach 1 351 cj 4speed
"We confide in our strength, without boasting of it; we respect that of others, without fearing it."--Thomas Jefferson

  Reply
#10
A nice set of closed chamber heads. Did you find the date code on them? My 70 M-code has the same D0AE Closed Chamber with a date code of Dec '69 (9M13 & 9M16).

[Image: 351-C-4v-D0-AE-Closed-Chamber-9-M13-9-M16.jpg]

[Image: 351-C-4v-D0-AE-Closed-Chamber-9-M13-9-M16-2.jpg]
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