Topic: C7AE-8594-A water outlet ID

[preaction]

Does this seem to be consistent with the small thermostat housing for 67 390-428 engines.

[J_Speegle]

Looks like the pictures of the others I have pictures of

[Bob Gaines]

I am only aware of one style and that is it.Hard to find one year only part.

[preaction]

Is there any practical way of filling in the divits on this and it be serviceable on a driving car ?

[Bob Gaines]

Is there any practical way of filling in the divits on this and it be serviceable on a driving car ?

JB weld is one product that can be used to fill in and sand smooth. It will take a considerable amount of time to make it look nice but I don't see anything that would cause a structural issue. Hopefully it was a cheaper one. One like that would sell in the 150-200 range typically. Better nicer ones trade in the 250-300.00 range. It is the number one thing missing on 67 GT500's typically so I always try to have one or more on the shelf for the restorers trying to put things back original..

[67gtasanjose]

JB weld is one product that can be used to fill in and sand smooth. It will take a considerable amount of time to make it look nice but I don't see anything that would cause a structural issue. Hopefully it was a cheaper one. One like that would sell in the 150-200 range typically. Better nicer ones trade in the 250-300.00 range. It is the number one thing missing on 67 GT500's typically so I always try to have one or more on the shelf for the restorers trying to put things back original..

+1 on the JB Weld, great stuff for corrosion on aluminum timing covers, intakes and like here on a thermostat housing. Now if you broke an ear off of the housing, maybe not so great there for structural work but if you have 100% of the corrosion removed it works excellent on these kinds of jobs.
Sandable and paintable and it would be about impossible to detect the repair when done correctly.

[1967 eight barrel]

My '67 500 uses this housing. Plan on paying big dollars for a serviceable unit. JB weld does work, and if you're painting it blue, you can fill the void, smooth VERY carefully trying to save the texture. I bead blasted the JB weld to give it a cast texture.

I am using the NOS C7AE housing on my Shelby, but I do believe I have another in very serviceable condition if needed.

[WT8095]

I'll mention Muggyweld again as an alternative to JB weld. I have not yet tried it myself, but I will as soon as the weather is warm enough to work outside.

http://muggyweld.com

[1967 eight barrel]

Dave,
Let me know how it works out in comparison to JB weld.

[WT8095]

Dave,
Let me know how it works out in comparison to JB weld.

Will do. I have seen demos in person - it's pretty impressive.

[BKnapp]

My current outlet/housing appears to be a generic service part and am looking to replace it with something more "correct". Is my research correct...the move from the larger opening to the smaller opening occurred around 12/1/66? If so, I may need some input. The intake on my car is 6M1...which size should I be looking for and where? If differs from the OP pictures, does anyone have one for my application?

Thanks

[Bob Gaines]

My current outlet/housing appears to be a generic service part and am looking to replace it with something more "correct". Is my research correct...the move from the larger opening to the smaller opening occurred around 12/1/66? If so, I may need some input. The intake on my car is 6M1...which size should I be looking for and where? If differs from the OP pictures, does anyone have one for my application?

Thanks

I have not seen or heard of another style thermostat hosing being used on a BB in 67 Mustang production. Re view this thread. I think it should be the small thermostat IMO.  The intake used will also determine what you can and can not use.  You can use the large diameter thermostat housing and thermostat on a 67 and later intake designed for the small thermostat but you typically can't use the small thermostat on a early intake meant for the big thermostat. The thermostat hole in the intake is too big for the small thermostat. The housing will fit but the hole is too big on the intake side to hold the small thermostat in place. If you go the big thermostat route then they are easy to find. I don't think it is correct for a 67 Mustang application but it is easy to find non the less. The C7AE marked one is hard to find.  If the date code is 6M1 ,Dec 1 1966  didn't you answer your own question?

[BKnapp]

The reason I ask is that my intake has a casting number of C6AE 9425 G and Mansfield Mustang states I need the C5 outlet/thermostat housing. Bob, if I understand you correctly, I will need the larger thermostat and the smaller C7 outlet. It does look like the recess in the housing could seat the larger thermostat flange. I apologize for my ignorance, but don't have any parts to compare or experience...yet. All I have is my MPC, Osbourne and shop manuals and you guys...along with a bunch of patched together pieces I am trying to figure out. It seems that a 67 was probably not the ideal model year to begin learning, with all of the changes.

[Bob Gaines]

The reason I ask is that my intake has a casting number of C6AE 9425 G and Mansfield Mustang states I need the C5 outlet/thermostat housing. Bob, if I understand you correctly, I will need the larger thermostat and the smaller C7 outlet. It does look like the recess in the housing could seat the larger thermostat flange. I apologize for my ignorance, but don't have any parts to compare or experience...yet. All I have is my MPC, Osbourne and shop manuals and you guys...along with a bunch of patched together pieces I am trying to figure out. It seems that a 67 was probably not the ideal model year to begin learning, with all of the changes.

I am not sure of what intake manifold casting you should have . You should do more research on that . My BB experience is primary with the 67 GT500's which there are a lot of similarities because the GT500 started out s a a 67 Mustang. What I do know is how things relate to the various FE aluminum intakes.  I would venture to say the cast iron intake for your car would be one that was designed for the smaller thermostat since that is what Ford changed to for 67.   I have pictures of November 66 built 67 model year cars with the small thermostat housing seen in the picture so I know they were being used prior to the Dec 1 66 start date that you indicated. Let me try explaining again .  The large hole intake (pre 67) should take a large thermostat and the large thermostat C5 housing. The smaller thermostat is used in conjunction with the C7AE housing and with a 67 intake with the smaller thermostat hole other wise the small thermostat will fall back into the intake with the larger hole. The large thermostat will work on both pre and post 67 intakes because it will overlap the smaller hole of a 67 intake but will not seat well because of the overlap.  The same goes for the C5 thermostat housing it will work on both because of the overlap. The small thermostat on the other hand will only work properly on the 67 smaller hole intake.The same goes for the C7AE housing .It will not work properly on the pre 67 large hole intake because the large thermostat will not seat in the C7AE small thermostat housing. I hope this is more clear.

[67gt390fb]

the C6AE-9425-G  intake takes the large thermostat,  while the C7AE-9425-E intake takes the small thermostat.   my book lists the changeover date from C6AE-9425-G to C7AE-9425-E as  11-1-66