1967 - F41 upgrade

[Jeff B.]

I have a 1967 factory 427-390 coupe w/air. It has the anti-sway bar on the rear. I would like to install a front anti-sway bar. Does this require any drilling of additional holes to install? Would this be a worthwhile addition?

[Jim T.]

Re: 1967 - F41 upgrade

Your 1967 came from the factory with one on the front, holes should be there for the bolts.

[Patrick H.]

Re: 1967 - F41 upgrade

I have a 1967 factory 427-390 coupe w/air. It has the anti-sway bar on the rear. I would like to install a front anti-sway bar. Does this require any drilling of additional holes to install? Would this be a worthwhile addition?

Umm, there was one there from the factory, so if it's gone now it has been removed. You should be able to see where the brackets were as well as where it attached to the A-arms.

[Jeff B.]

Re: 1967 - F41 upgrade

Thanks for the quick replys.
So you're saying it had a factory installed front anti-sway bar? I thought the front bar came only with the F41.

[Jim T.]

Re: 1967 - F41 upgrade

No rear bar on standard suspension.

[Jeff B.]

Re: 1967 - F41 upgrade

Jim:
I thought the 427 cars came standard with a rear bar, whereas the small blocks did not. F41 gave the small blocks both, but on the big blocks, a heavier rear and additional front.

[Patrick H.]

Re: 1967 - F41 upgrade

Thanks for the quick replys.
So you're saying it had a factory installed front anti-sway bar? I thought the front bar came only with the F41.

Here you go - picture courtesy of "Maple Hill Resto" and a Google search. Front bar is in gray on this chassis. IMG_1436.jpg Click on photo for a larger version.

[Stephen L.]

Re: 1967 - F41 upgrade

All 67 Big Blocks came with front and rear sway bars. F41 suspension increased the front sway bar diameter.

[Jeff B.]

Re: 1967 - F41 upgrade

Thanks to all who responded.
I am wiser and up to date.

[Ara G.]

Re: 1967 - F41 upgrade

All 67 Big Blocks came with front and rear sway bars. F41 suspension increased the front sway bar diameter.

Exactly Steve.....

[Duke W.]

Re: 1967 - F41 upgrade

Base suspension big blocks have a 7/8" front anti-roll bar and 9/16" rear bar.

F-41, among other things, replaced the front bar with a 15/16" version, but the rear bar remained the same as base suspensions.

F-41 ride rates doubled on both ends, which is fine for a smooth high speed race track, but not so great for normal driving on our nation's deteriorating roads and highways.

The effect of the bigger F-41 front bar with no change in the front/rear ride rate ratio biased the dynamic response toward more understeer, which is also desireable on a high speed race track.

Anti-roll bar contribution to roll stiffness increases with the FOURTH POWER of bar diameter, so a 1/16" increase should be felt SOTP by a driver who is sensitive to changes in dynamic response.

Duke