Topic: 67 GT350 Engine Gaskets

[Bossbill]

There is a smattering of info all over the site regarding Ford and Shelby gaskets. But things like oil pan gaskets allude to "that's not assembly line" without mentioning what IS assy line.

What makes color important on Shelbys is that the intake was replaced at the engine plant and the color of the gasket is visible. Same with the thermostat gasket.
With different valve covers the unpainted valve cover gaskets are also visible. The fuel pump gasket is always visible on all 289s.

Starting at the top of the engine:

Air cleaner to carb round gasket
     - 0.175 thick, 5 1/2 OD, 5 ID,  The top and bottom side have a red adhesive applied to create a pattern. Tan on the sides. See pic
Carb Base Gasket
     - No data
Valve cover gaskets
     - Cork, black surfaces. Triangular tabs as in previous years.
Intake Gaskets
   - From Jeff's post these are white Raybestos. From the lettering and style of gasket it may be the same material as the fuel pump gasket.
Thermostat Gasket
     - Darker tan, see pics further ]
Head Gasket
   - At the front of the heads a small square section protrudes which sports a round hole. It's possible to lose a point over this since the aftermarket gaskets do not stick out or have this hole. Depends on the judge!
Timing Cover gasket to block
    - Without today's extension on the right side that helps the gasket maintain its shape; Possibly black
Water pump gasket
     - Without the extension on the right side above the water outlet
Fuel pump gasket
     - White asbestos
Pan gasket
    - I believe Ford used square gaskets with rounded edges that stuck out from the timing cover/oil pan in the front. Same black treatment as valve cover gaskets. May not matter since these are painted. But the style is important.

Updates made as more data comes in. Last update to this post 8/11/22.

[Bob Gaines]

There is a smattering of info all over the site regarding Ford and Shelby gaskets. But things like oil pan gaskets allude to "that's not assembly line" without mentioning what IS assy line.

Starting at the top is the air cleaner to carb round gasket.
     - 0.175 thick, black, 5 1/2 OD, 5 ID
Carb Base Gasket
     - No data -- I haven't gotten that far
Valve cover gaskets
     - Cork, black surfaces but natural edges, triangular tabs
Intake Gaskets
   - References were made to white and that's all I have
Thermostat Gasket
     - no data, possibly black
Timing Cover gasket to block
    - Without today's extension on the right side; Probably black
Water pump gasket
     - Without the extension on the right side above the water outlet
Fuel pump gasket
     - White asbestos
Pan gasket
    - I believe Ford used square gaskets that stuck out from the timing cover. Same black treatment as valve cover gaskets

Updates made as more data comes in.
Thanks!

The gasket between and air cleaner is not black. It has multiple layers and is tan son the sides .The top and bottom side have a red adhesive applied to create a pattern.

[J_Speegle]

These two I believe came from the same two or three suppliers and from the same material. Don't see any indication that they had asbestos in them and have not heard of anyone testing them in the past. Both have an ink print pattern in one of a couple of colors identifying the supplier. Both applications had a dry spray adhesive on one side of the gasket material. Have not see anything in the engine assembly instructions as to which side to face the adhesive side towards when putting them on an engine. Pictures are from prior postings

Intake Gaskets
   - References were made to white and that's all I have




Fuel pump gasket
     - White asbestos




--------------------------------

Thermostat Gasket
     - no data, possibly black

Guess we need to look at a NOS engine gasket kit for those examples. Believe black represents a gasket from a aftermarket rebuild kit or over the counter at a non-Ford parts house
---------------------------------

Valve cover gaskets
     - Cork, black surfaces but natural edges, triangular tabs



---------------------------------

Pan gasket
    - I believe Ford used square gaskets that stuck out from the timing cover. Same black treatment as valve cover gaskets

Don't believe, since in 67 the engine had the painted stamped steel oil pan along with the gasket and engine, they used the same gasket as the earlier cars with the aluminum cast oil pans.  Believe the same gasket as any other 289 that year

----------------------------------------------------

Head Gasket
     - Visible small hole in the outer corners of the gasket





That's a start

[Bossbill]

Jeff -- My possibly original A-code engine looks like this in the front (green arrow):

[J_Speegle]

Jeff -- My possibly original A-code engine looks like this in the front (green arrow):

65 Right?

[Bossbill]

Oops, forgot the data.
65 A-code from my sig line with a square-ish part on the front of the gasket.
I've worked on a lot of 289s and remember the square front. I just don't recall if that was assembly line or replacement. Or year!

[Bossbill]

Does anyone have a pic of the head gasket with the squared off end and hole -- not installed so I can see the whole thing?
Any tips on who would have such a thing?

Also, what color is the thermostat gasket on the 67 Shelby GT350?
On other 289s it is painted with the engine so the color is immaterial. On the Shelby I'm assuming a new one had to be sourced during the intake swap.

[Bossbill]

From a 66 GT unrestored car taken from underneath, I see a drooping square pan gasket near the fuel pump.
https://www.concoursmustang.com/forum/index.php?topic=16692.msg104399#msg104399

Caveat 1: unknown if engine is unmolested.
Caveat 2: Unknown if 66 and 67 used the same pan gasket.

[J_Speegle]

Went through a bunch of pictures and with allot of the cars being ordered with PS and AC that year it makes it more difficult to see those areas compared to 65-66 so have to rely for many undercarriage shots.

A few findings. The unsupported gasket corners often broke off or where torn by the owners so that does not help.

Replacement oil pan gaskets in the 70-80's often had the square forward corners


Did find a dozen or more 67 small blocks with the square corners.  Still need to try and find some period correct gasket set or sets and need to look at the one celebration picture of the small block I posted to the site to see what the drivers side gasket corner looks like if visible

[Bossbill]

Finding original gasket sets has proven to be a challenge for me as well.

I'll post pics of a new gasket set I found that can be modified -- when it arrives in a few days.

[J_Speegle]

Found a couple of pictures with a little deeper look. An individual oil pan gasket set from the 60's and a engine gasket kit with the oil pan gasket. Don't know if there is another kit with the timing cover and thermostat housing gasket or if someone just used those from the kit and this is what is left. Guess I could look it up in an old MPC to check and compare.
 
Also have a picture of a box with 10 sets of oil pan gaskets from the 60's though the box is not open to show its details and contents

[J_Speegle]

Does anyone have a pic of the head gasket with the squared off end and hole -- not installed so I can see the whole thing?
Any tips on who would have such a thing?

Not a perfect square/sharp edge. Picture above off the engine have a half dozen or more on engines

Also, what color is the thermostat gasket on the 67 Shelby GT350?
On other 289s it is painted with the engine so the color is immaterial. On the Shelby I'm assuming a new one had to be sourced during the intake swap.

In my observations they were a dark tan color  like many of the replacements of the time but different since they had to round bolt holes in the gasket no one hole and one slot

[Bossbill]

Excellent data. Thanks for looking!

The pan and valve cover appear to have the black paint/sealant on the surface. The edges would be bare cork. It appears that the early cars could have black gaskets and later cars just cork.

The head gasket is interesting -- I see the hole!

Dark tan for thermostat gasket is also not quite what I thought. This would certainly be seen between the blue housing and an aluminum intake on the Shelby.

Thanks again as I can now move forward on my engine build.

[J_Speegle]

Take notice that the one oil pan gasket has a rounder corner  that the other. On original engines its been my observation that "squarer" of the two was installed on the drivers side

As for the black I'm uncertain if the engine assembly line cork gasket were painted black originally and IMHO its very possible that service replacements were painted black to keep them from drying out from sitting on a shelf somewhere for years.  Positive thing is that for 67 Shelby the oil pan gasket got engine paint

[J_Speegle]

To go along with the posy above about the two different long cork oil pan gaskets I found this mentioned as I was searching for info on the valve cover gasket discussion. The list of parts used for a 67 Shelby race build identified C2OZ-6710-B as for the RH and C2OZ-6711-B as the original gasket for the LH. Should provide you with additional gasket part number for your other questions/threads So I will repost there