Cracked Head
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Elder User
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From: Federal Way Wa
Cracked Head
I need to know what head Pt # i can put on my 352 i've heard i can put a 390 head on but is there any difference. I've developed cracks on the exhaust common i hear and would like to get fixed soon. Any facts would be great and thanks in advance.
Mechanically inclined, Combustion disabled
RCC
Mechanically inclined, Combustion disabled
RCC
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
I need to know what head Pt # i can put on my 352 i've heard i can put a 390 head on but is there any difference. I've developed cracks on the exhaust common i hear and would like to get fixed soon. Any facts would be great and thanks in advance.
Mechanically inclined, Combustion disabled
RCC
Mechanically inclined, Combustion disabled
RCC
The replacement head (C8AZ6049M) was used on both 1965/71 cars & 1965/72 trucks.
FTE member camperspecial65, who lives in the Sea-Tac area, has sources for used heads.
Needsmorecoffee.
Joined: Oct 2004
Posts: 3,624
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From: CT
66 was also a year of transition for the FE heads. The C6AE-6090-R were still being used. These are the larger port low riser heads. The C6AE-6090-J, L U or Y are the smaller port "velocity" heads. Just note which heads you have when you remove the offending head. Also note if your heads have been milled or when you look at replacements. You can see on the chamber and intake side "thumbprints" which can be used as a visual guide when looking at heads. While there will be a small cc chamber difference depending on how much the heads have been milled there can also be a small misalignment when you go to install the intake. Just something to watch for. Later C7-C8 and D2 heads can have some chamber and slight internal differences. Not the end of the world on a street driver but again something to note while shopping.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
66 was also a year of transition for the FE heads. The C6AE-6090-R were still being used. These are the larger port low riser heads. The C6AE-6090-J, L U or Y are the smaller port "velocity" heads. Just note which heads you have when you remove the offending head. Also note if your heads have been milled or when you look at replacements. You can see on the chamber and intake side "thumbprints" which can be used as a visual guide when looking at heads. While there will be a small cc chamber difference depending on how much the heads have been milled there can also be a small misalignment when you go to install the intake. Just something to watch for. Later C7-C8 and D2 heads can have some chamber and slight internal differences. Not the end of the world on a street driver but again something to note while shopping.
Ford originally only listed one cylinder head part number 1968/72: C8AZ-6049-M.
After Ford replaced the 352 head used 1965/67 on F100/350's with the 1968 head, now the parts catalog only lists one head for 1965/72: C8AZ-6049-M.
This is also the case with the passenger car 352/390 heads used 1965/67.
What you are saying, I assume, Glenn, is there were minute changes to the various heads.
That may be, but there's still only one "service" part number.
OP: campersecial65 just parted out a 65 or 66 that had a 352 engine. He didn't take the engine, it's sitting in a wrecking yard still in the truck. because, he parted the truck out at the yard.
This yard is local, somewhere close to you. Contact camperspecial65, cuz not only does he know where this truck is, but has piles of other parts for these trucks.
Postmaster
Joined: Mar 2004
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From: seattle
I will go look at my heads I have...been so long I dont recall if they are 302 or FE heads LOL
- cs65
- cs65
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Needsmorecoffee.
Joined: Oct 2004
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From: CT
I agree Bill. The C8AZ-6049-M w/o valves and C8AZ-6049-R w/valves. I'd think that would be for what we know as the C8AE-6090-H casting if I reading that right. I'm not sure about the D2TE-6090-AA's. My MPC is 65-72 Mercury dated Nov 75 final issue. So my FE head section only goes up to 70 and I'm at a slight disadvantage there. I also see some restrictions and need to find A) where that section is they are listed and B) what they are. That might explain to me the different applications they mean. As far as the small port head castings themselves from the 66 to 72 heads there were slight changes to the chamber shape and size, port floor, bowl depth, radius, thermactor humps etc.... Which differences I'm sure would only show in the engineering blueprints. So yes while there are small changes to the casting itself the part number remains the same. Sorry if I was misunderstood there. 
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Elder User
Joined: Sep 2008
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From: Federal Way Wa
Ok now you guys are just confusing me with your part numbers.Lol Where do i find the part # on the head? I have a tag on the motor CS and I tried to look at it but it's under the coil. I'll losen the bolt and read it i think it has the build date will that help?
Thanks guys
RCC
Thanks guys
RCC
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
Ok now you guys are just confusing me with your part numbers.Lol Where do i find the part # on the head? I have a tag on the motor CS and I tried to look at it but it's under the coil. I'll losen the bolt and read it i think it has the build date will that help?
Thanks guys
RCC
Thanks guys
RCC
Check with Don, he has some.
Better do it quick, as he's going on vacation today.
Needsmorecoffee.
Joined: Oct 2004
Posts: 3,624
Likes: 2
From: CT
Ok now you guys are just confusing me with your part numbers.Lol Where do i find the part # on the head? I have a tag on the motor CS and I tried to look at it but it's under the coil. I'll losen the bolt and read it i think it has the build date will that help?
Thanks guys
RCC
Thanks guys
RCC
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From: Federal Way Wa
Sorry this took so long to post I had acouple other issues to deal with but i finally had time to check the casting number and here goes as near as I can tell it's 06AE-R from looking at your posts the 0 could be a C but looks like a 0.
Thanks
Rob
Thanks
Rob
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From: Federal Way Wa
The free heads i got in witch the valves won't move so that has me worried there is some minor pitting on the head surface not sure if that would come out when surfaced or not may just have to pay the $40 to have checked but would rather not if these heads won't work on my 352.
Thanks for any info.
Thanks for any info.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
Sorry this took so long to post I had acouple other issues to deal with but i finally had time to check the casting number and here goes as near as I can tell it's 06AE-R from looking at your posts the 0 could be a C but looks like a 0. Looks like an 0 because the die was worn...that's common to see that on cast parts.
Thanks
Rob
Thanks
Rob
C refers to the decade = 1960's / 6 is the year 1966 / A is LTD/Galaxie, but that doesn't mean diddly squat, because this same C6AR head was used on everything thru 1967, replaced by C8AE in 1968.
R later replaced by an E, refers to engineering.