Suitable 428 bell housing

[JWH]

Here is the clutch fork I have been using on the C6OA bell housing. Please comment if this is the correct style clutch fork for a '67 GT500 as I do not know.

[The Going Thing]

The fork is the 68-up style. It appears your pivot is missing from the bell housing. Nothing to be concerned being you have the 68 up style. They are reproduced.

[mlplunkett]

So have we concluded that the CF clutch WILL fit in the C6OA bellhousing and that the 68 fork is the better option?

[The Going Thing]

Well, yes.  The change on the C60A Large Z is 66-7 use a wire type retainer for the fork. 68-up uses a spring steel flat clip. Another consideration is the use of the 1 1/6" 10 spline input Vs. the 1 3/8". They use different throwout bearings because the input shaft cone is larger on the  1 3/8 input shaft.

[The Going Thing]

Here is the 68 fulcrum. You'll note it is slotted for the 68 up clip.

[shelbydoug]

Great pics that explain a lot.