Topic: 68 428CJ sway bar

[preaction]

There are many threads about the sway bars for the 68 mustang and most intersect with GT and competition suspensions but I couldn't find any references to the GT's with the 428 option. Does the 428 GT car have a standard GT suspension and sway bar, also I have seen some threads listing AM rear springs as being part of the competition is this the same as the AM spring on a 4 speed CJ equipped car ?

[RoyceP]

If the car has a 428 CJ it has a 15/16" sway bar whether it is a GT or not. The rear springs I believe are the same as a 390GT would get. Again it would not matter if the 428CJ Mustang were a GT or not. I think that even though you could get the "GT" package on a 428CJ Mustang there was very little that it added to the car other than the badges.

Not positive but I think the only difference in the "competition" suspension versus "GT" would be the shocks. Perhaps the 428CJ website forum might be a better place to ask.

[preaction]

What would be the sway bar diameter for a 390 GT for 68 ?

[CCP]

  I've got a '68 GT 390 in the shop right now and it has a 7/8" sway bar on it.

[DTruitt]

What would be the sway bar diameter for a 390 GT for 68 ?

15/16

[preaction]

15/16

Are the steel  spacers used on big blocks and small blocks.

[DTruitt]

Are the steel  spacers used on big blocks and small blocks.

No, just the CJ cars.

[CCP]

 According to the VMF, it should be 7/8"..

[midlife]

According to the VMF, it should be 7/8"..

*gasp*  VMF???

[jwc66k]

*gasp*  VMF???

Uh, Volkswagons Mean Fun?
Just asking.
Jim

[CCP]

  LOL, Vintage Mustang Forum. Sorry, should have clarified.   

[J_Speegle]

According to the VMF, it should be 7/8"..

Then  I would go with the 15/16ths 

One of the byproducts of asking on every forum - You get plenty of thoughts but rarely a single answer

[Bob Gaines]

Good luck finding a genuine original 67/68 style 15/16 sway bar. They are rare.  I can't say definitively if not used on a 68 GT390, but I am skeptical. FYI the spacers had to do with helping the 15/16 sway bar to not hit the balancer on a BB. They were not needed on a 7/8  bar. I have not heard of any 390 cars regardless of GT or not that used the spacers. The lack of spacers on a particular 68 car would indicate the 15/16 bar was not used. If there are 390 cars with the spacers then it would have gotten the 15/16 bar.  The spacers were eliminated in 69 because the shape of the bar was changed as seen in my previous picture. I would think if they were used on a lot of applications they would be more prevalent. They aren't. 69/70 style is another issue because they were used on the Boss cars too because they are a lot more prevalent. Just some facts and observations to add to the discussion.   

[TLea]

The lack of spacers on a particular 68 car would indicate the 15/16 bar was not used

Except GT 500

[Bob Gaines]

Except GT 500

Good point . I have not a viable explanation why they were used on Cobra Jet cars but not on a non Cobra Jet like a GT 500 in 1968 . Anybody got a idea?