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Old 06-24-2005, 16:01   #1 (permalink)
Thomas Cameron
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68 coupe suspension questions

All -

My 68 coupe drives like a boat - a really sloppy, "floating" feeling and
it plows badly when I go around corners. It looks like the original
suspension is under the body, including the original bushings.

I'm looking around and there are about a million options for me. Since I
just dropped a wad o' cash on the new motor, I am leaning towards the
Mustangs Plus Grab-A-Track Performance Suspension Rebuild Kit and the
Grab-A-Trak Spring and Handling Kit. It seems to be good stuff and not
too expensive.

Does anyone have any experience, good or bad, with these kits?

I am leaning towards the upgrade from 4-leaf to 5-leaf rear springs - I am
just as interested in handling in the twisties as I am in the quarter
mile. If I put the 5-leaf springs on and decide later that I want to lower
it, it is just a matter of longer u-bolts and lowering blocks, right? I
am hesitant to get lowering springs because the rear is already noticeably
lower than the front. It says that the 620 springs lower the front end by
an inch, so I am thinking if I leave the rear where it is and drop the
front, it will even out.

Of course, the 225 tires on the 15x8 rims are already rubbing when I turn
the wheel all the way to each side, so I am really worried about rubbing
after I lower it. Anyone have any words of wisdom there?

Also, when ordering the Performance Suspension Rebuild Kit it's asking
if my upper control arms are 3-bolt or 4-bolt. How can I tell?

Thanks!
Thomas
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Old 06-24-2005, 16:01   #2 (permalink)
one80out@hotmail.com
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Re: 68 coupe suspension questions

Those all-in-one kits are the best option for an old Stang still
wearing its original underpinnings. I would not go with the 5 leafs,
though -- a little stiff.

Yes you can lower later with blocks, but the reason for your sagging
rear now is that the springs are 38 years old. If you put in standard
height leafs and 620 coils you're going to have a rake. I'd go with
the "mid-eye" rear springs and if necessary cut the fronts to match.

These 15 x 8's must be aftermarket, and if they're rubbing they must
have the wrong backspacing, because many are running 8" wheels and even
235 rubber on '68's with no problem. Maybe you should either get
different rims or roll the fender lips. Rubbing tires suck.

I believe only '65-'66 was 4-bolt. The reference is to the ball joint
on the UCA, whether it's held in place by 4 rivets or 3.

180 Out

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Old 06-24-2005, 16:01   #3 (permalink)
Spike
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Posts: n/a
Re: 68 coupe suspension questions

Grab A Track is pretty good. Mustangs Plus carries pretty good stuff.

One change from original on mine is conversion to poly
bushings/insulators, etc. The flex/distortion a lot less than original
rubber, don't deteriorate the way rubber does with exposure to
chemicals.

You might also look at the PST(Performance Suspension Technologies)
kit, though it may be a bit pricey. www.pst.com. I like what they
have, and have used the kit for a 66 Fastback.

I'll be adding sub frame connectors to stiffen the chassis more.

Can't tell ya a thing about rear leafs.

I'm running 225/50Z16 on 16x8" Vintage 40 rims front and rear (some
run larger rears) and it was a simple bolt on. And that's with a
negative wedge kit which lowered the front by 1.75". No problems I can
see. Is your backspace correct?

You should be able to see and count the bolts.


On Fri, 24 Jun 2005 20:18:16 GMT, Thomas Cameron
<thomas.cameron@camerontech.com> wrote:

>All -
>
>My 68 coupe drives like a boat - a really sloppy, "floating" feeling and
>it plows badly when I go around corners. It looks like the original
>suspension is under the body, including the original bushings.
>
>I'm looking around and there are about a million options for me. Since I
>just dropped a wad o' cash on the new motor, I am leaning towards the
>Mustangs Plus Grab-A-Track Performance Suspension Rebuild Kit and the
>Grab-A-Trak Spring and Handling Kit. It seems to be good stuff and not
>too expensive.
>
>Does anyone have any experience, good or bad, with these kits?
>
>I am leaning towards the upgrade from 4-leaf to 5-leaf rear springs - I am
>just as interested in handling in the twisties as I am in the quarter
>mile. If I put the 5-leaf springs on and decide later that I want to lower
>it, it is just a matter of longer u-bolts and lowering blocks, right? I
>am hesitant to get lowering springs because the rear is already noticeably
>lower than the front. It says that the 620 springs lower the front end by
>an inch, so I am thinking if I leave the rear where it is and drop the
>front, it will even out.
>
>Of course, the 225 tires on the 15x8 rims are already rubbing when I turn
>the wheel all the way to each side, so I am really worried about rubbing
>after I lower it. Anyone have any words of wisdom there?
>
>Also, when ordering the Performance Suspension Rebuild Kit it's asking
>if my upper control arms are 3-bolt or 4-bolt. How can I tell?
>
>Thanks!
>Thomas


Hey! Spikey Likes IT!
1965 Ford Mustang fastback 2+2 A Code 289 C4 Trac-Lok
Vintage Burgundy w/Black Standard Interior
Vintage 40 Wheels 16X8"
w/BF Goodrich Comp T/A Radial 225/50ZR16
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Old 06-24-2005, 16:01   #4 (permalink)
Scott Van Nest
Guest
 
Posts: n/a
Re: 68 coupe suspension questions

I just put the front steering kit and the suspension kit on my '71. and the
larger sway bar. makes worlds of difference. the springs were difficult to
install as the perches were so tight. I found that I need wider tires and
more engine now. But I should have the rubbing issue with the larger body
style.

I went the safe route, brakes, suspension, steering, motor. Can't decide on
BB or SB stroker.

also, I was able to measure everything before I took it apart and was close
enough putting it back together to drive for a while without an alignment
job.

Scott
"Thomas Cameron" <thomas.cameron@camerontech.com> wrote in message
news:pan.2005.06.24.20.18.58.229964@camerontech.com...
> All -
>
> My 68 coupe drives like a boat - a really sloppy, "floating" feeling and
> it plows badly when I go around corners. It looks like the original
> suspension is under the body, including the original bushings.
>
> I'm looking around and there are about a million options for me. Since I
> just dropped a wad o' cash on the new motor, I am leaning towards the
> Mustangs Plus Grab-A-Track Performance Suspension Rebuild Kit and the
> Grab-A-Trak Spring and Handling Kit. It seems to be good stuff and not
> too expensive.
>
> Does anyone have any experience, good or bad, with these kits?
>
> I am leaning towards the upgrade from 4-leaf to 5-leaf rear springs - I am
> just as interested in handling in the twisties as I am in the quarter
> mile. If I put the 5-leaf springs on and decide later that I want to lower
> it, it is just a matter of longer u-bolts and lowering blocks, right? I
> am hesitant to get lowering springs because the rear is already noticeably
> lower than the front. It says that the 620 springs lower the front end by
> an inch, so I am thinking if I leave the rear where it is and drop the
> front, it will even out.
>
> Of course, the 225 tires on the 15x8 rims are already rubbing when I turn
> the wheel all the way to each side, so I am really worried about rubbing
> after I lower it. Anyone have any words of wisdom there?
>
> Also, when ordering the Performance Suspension Rebuild Kit it's asking
> if my upper control arms are 3-bolt or 4-bolt. How can I tell?
>
> Thanks!
> Thomas



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Old 06-24-2005, 18:01   #5 (permalink)
Thomas Cameron
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Posts: n/a
Re: 68 coupe suspension questions

On Fri, 24 Jun 2005 14:09:00 -0700, one80out wrote:

> Those all-in-one kits are the best option for an old Stang still
> wearing its original underpinnings. I would not go with the 5 leafs,
> though -- a little stiff.


You think that the 4-leafs are stiff enough to give good handling through
the Texas Hill Country? I'm serious, we have some really awesome twisties
here that I like to carve.

> Yes you can lower later with blocks, but the reason for your sagging
> rear now is that the springs are 38 years old. If you put in standard
> height leafs and 620 coils you're going to have a rake. I'd go with
> the "mid-eye" rear springs and if necessary cut the fronts to match.


OK, cool.

> These 15 x 8's must be aftermarket, and if they're rubbing they must
> have the wrong backspacing, because many are running 8" wheels and even
> 235 rubber on '68's with no problem. Maybe you should either get
> different rims or roll the fender lips. Rubbing tires suck.


It only rubs on the inside, not on the fender. The spacing is supposed to
be correct, the guy at Discount Tire looked it up.

> I believe only '65-'66 was 4-bolt. The reference is to the ball joint
> on the UCA, whether it's held in place by 4 rivets or 3.


Cool, will eye-ball it.

Thanks!
TC
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Old 06-24-2005, 18:01   #6 (permalink)
one80out@hotmail.com
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Posts: n/a
Re: 68 coupe suspension questions

Thomas C wrote:

> You think that the 4-leafs are stiff
> enough to give good handling through
> the Texas Hill Country? I'm serious, we
> have some really awesome twisties
> here that I like to carve.


I think the best option is Maier Racing 4.5 leafs. My kids' ' 65 has
these, with KYB Gas-A-Justs, midolyne and polyurethane bushings,
235/45-17's, frame connectors, underhood braces, and a six-point cage
-- that is, a pretty rigid chassis for a '65 Stang -- and no one has
complained. If you don't mind a little harshness, I've got 5-leafs on
my '70 Cougar, 351C, 225/70-14's, frame connectors, Gas-A-Justs, and it
took a little getting used to, but I grew to like it a lot.

> It only rubs on the inside, not on the fender.


Rubbing on the inside is EASY: spacers. I'm using a 7/32" spacer on
the '65, with 17 x 8's, made by Mr. Gasket and I picked it up off the
rack at Kragens. It was necessary for the rim flange to clear the ball
joint. I also had to cut off a 1.5" section of the pinch weld at the
rear of the passenger wheel house, where the sidewall wanted to rub at
full right lock. Check where your interference is coming from, and if
it's one of these pinch welds cut it out. Or get some spacers; most
tire stores that have been around awhile will have them.

180 Out

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