1968 Cobra Jet right exhaust manifold to frame clearance

[detailguy]

To All;
Any info or advice would be greatly appreciated.
I have installed a 1968 428 engine with C80E heads , a Edelbrock 4 BBL intake and repo Cobra Jet exhaust manifolds from NPD in a 1968 Mustang convertible.
The right exhaust manifold touches the top of the frame.
Car has not been wrecked and I believe I have the correct motor mounts.
What is the standard clearance and can you advise me as to what I am doing wrong?
Thank you in advance for any help.
regards
JES

[Coralsnake]

Are you sure you have the correct motor mounts?

Do you have gaskets between the manifolds and heads?

[Coralsnake]

https://www.428cobrajet.org/id-motor-mount-support-bracket

If I recall correctly the plates that bolt to the block can actually be installed on the wrong sides of the block. They are marked left and right if original

https://www.ebay.com/itm/1967-1970-Mustang-Cougar-390-428-FE-engine-block-motor-bracket-mount-/183963382620?hash=item2ad512735c%3Ag%3ABnEAAOSwFChdhEFD&nma=true&si=uMMvqrsFQA9Fm%252B%252FXp9hxAk2eM5M%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557

[detailguy]

Yes sir, I have a gasket between the head and exhaust manifold.
Also, I will check about L & R plates that fasten to block
What would be the average normal clearance between manifold and frame?
Thank you so much for your help

[Coralsnake]

I will have to look

[Bossbill]

Mods need to move this to the 68 Shelby area . . .

[Tired Sheep]

Gee, he has a 1967 car?

We are going to complain about a legit post, when we have yahoos posting about pianos and endlessly copying pictures off the internet.

Lets get our priorities in order...

[JWH]

3/8" at the closest point between the ex manifold and the frame on my car, which has CJ heads and CJ exhaust manifolds. No gasket between the exhaust manifold and the head. I would start with the motor mounts and see if something is off there.
Jeff

[Bossbill]

Actually I was wrong. It belongs in the Lounge. It's for a 68 Mustang.

It's not a legit post in the 67 Shelby section of the forum.

[FL SAAC]

You know they are correct, it's a 1968 and it's a mustang not a shelby.

So in this case due to the specific details or terms belonging to this particular field, this topic should be moved into the lounge.

Mr. Yahoo 

Gee, he has a 1967 car?

We are going to complain about a legit post, when we have yahoos posting about pianos and endlessly copying pictures off the internet.

Lets get our priorities in order...