If you made the modification I have a couple of questions if you'd be so kind.
-Keith
...OK, so what are the questions?
There are a number of people on this site that have done this over the years, me included.
JD:
My vehicle has the Arning drop. It wasn't done at my hand, but I elected to use the relocated upper control arm holes when the vehicle was reassembled. It seemed almost too low with the TMC coil springs with the Arning drop. I wound up adding a 1" poly spring seat/spacer.
The vehicle seems a bit soft suspension wise, and for some reason I remember their original offering when I bought the springs having a rate of 520lb. I called Total Control Products and was told that TMC springs tended to be in the 460-500 LB/IN range and slightly short and soft. I ordered their 1" lower springs with a 640 LB/IN rate today. I am thinking about also using their 1/2" spring seat/spacer when they are installed. I don't want to start dragging my 6114 Hooker headers on the pavement.
Anyway, what springs are others using with the drop. Did they find the front end stiffened up has less roll with the 1" sway bar?
Did it create issues like bump steer and did they wind up using a bump steer correction kit? If so, which one?
-Keith
The stock springs are way too soft to use. I used a new set of the "Boss 302 Chassis Modification" springs with a 1" polly spacer, Koni shocks, -3/4 degree camber, 3/16" toe, 1-1/8" front anti-sway bar.
On my '68, I went with the full 1-1/2" drop with ball joint spacers. On that car it has JBA headers that tuck up better but it has no ground clearance issues.
Tires are BFG 235-60-15's on 10 spokes. You can put your fingers between the tires and the fender lips.
The big block is different because of the added engine weight. The only thing that you can do there is put the battery in the trunk and go to an aluminum head. Then the chassis travel will work for you.
One factor that few notice though on the 500 is that the engine is installed about 2" further forward then the small block so all things are not equal, BB vs. sb.
I would not suggest a arning drop on a GT500 for a GT350 yes but for a Big Block car its a bad mod that only cause problems. A lot of people did the Arning Drop on Big Block Mustangs and were not satisfied. It has to do with the weight distribution small block vs big block why its working on sb mustangs and not working on bb mustangs. With the drop on a bb mustang the nose get down more so the weight is more on the front wheels and it will bring nothing than the same problem before a nose heavy mustang, you should change the motor mounts to get the engine closer to the firewall that will affect the handling positive.
I did the drop on #1317 more than 35 years ago in Sweden and replaced the power steering with a manual one at the same time.
My GT500 is equipped with a 289 HiPo but retains it's original big block springs. With 235/60/15 Good Years Eagle IIs it's a bit heavy to park but runs like a charm around corners. Would only change it if I go back to the original 428 engine.
Texas Swede
I am amazed at how many have done the modification that are not "corner racers" . To do the mod on a street car that doesn't see serious track time is a total waste of time and energy! Driving to a car show is not driving on a race track and I doubt the modification would alter the time needed to get there.
Quote from: gt350hr on January 04, 2019, 11:15:55 AM
I am amazed at how many have done the modification that are not "corner racers" . To do the mod on a street car that doesn't see serious track time is a total waste of time and energy! Driving to a car show is not driving on a race track and I doubt the modification would alter the time needed to get there.
The mod sure makes carving onramps more fun. I've done it to all my 65-70 Mustangs the only "serious" track time was COCOA Willow events. If the car will see spirited driving at all it's worth doing. Stock height/wt springs work just fine for the occasional track car. Too many experts want to sell you the latest wiz bang stuff just to line their own pockets.
Quote from: 98SVT - was 06GT on January 04, 2019, 11:22:53 AM
Too many experts want to sell you the latest wiz bang stuff just to line their own pockets.
At least we aren't disucussing shaving the shock towers and installing coil-overs! ;)
No, I am not going to start "hacking" the vehicle up. What I did is easily returned. So no coil overs, air bags or other mods of that nature. The arning drop is done. I just thought it seemed a bit soft to me.
I have no business playing with this a week and a half post open heart surgery, but I am bored stiff and I'm not a pain baby.
It'd be nice to get a few miles on the car. I just have to wait until my ribs heal. I just got released to drive yesterday, but I know rowing a four speed through the gears I'm not quite ready for.
I personally think that it is a very worthwhile change to make. With it you can actually steer the car rather then aim it like an arrow.
I've had it in the car since 1972 and have never regretted it.
I will say though that it is just one step in making the car handle. Every one of the "Boss 302 chassis modification" books items helps a little. When you put a lot of littles together in one place you get a lot of improvement.
The 680 # spring cut one coil and with a 1" poly spacer is what you want for the street. It is not a hard riding spring. You also need radial tires as well.
Keep those concrete Goodyear polyglass ones for shows. That is all they are good for an all they are safe for.
I also would drop all cars that are going to be driven . I have done many thru the years and it makes a big difference in the feel of the car .
We maybe should do a thread about suspension/ steering mods that are easy to do and didnt affect the originality to much. I like upgrades like roller bearing control arms etc. yes not concours but also not a heidt front end ;-)
Quote from: Kent on January 05, 2019, 06:00:54 AM
We maybe should do a thread about suspension/ steering mods that are easy to do and didnt affect the originality to much. I like upgrades like roller bearing control arms etc. yes not concours but also not a heidt front end ;-)
The drop is easy to do. It is also very effective. There are other things that CAN be done with it as well to make it more effective, but those are optional.
The only caution would be if you wanted to seriously compete in Concourse. Then leave it alone. Otherwise if you are so much of a nerd that you are afraid of this modification, some kind of public humilation, then stick to playing your video games and collecting Match Box miniatures. Maybe kool designer sneakers too? Those can't hurt you. What are you even doing with a real car to begin with anyway? ;)
You are right...
Quote from: gt350shelb on January 04, 2019, 11:13:22 PM
I also would drop all cars that are going to be driven . I have done many thru the years and it makes a big difference in the feel of the car .
Quote from: shelbydoug on January 05, 2019, 08:43:57 AM
Quote from: Kent on January 05, 2019, 06:00:54 AM
We maybe should do a thread about suspension/ steering mods that are easy to do and didn't affect the originality to much. I like upgrades like roller bearing control arms etc. yes not concours but also not a heidt front end ;-)
The drop is easy to do. It is also very effective. There are other things that CAN be done with it as well to make it more effective, but those are optional.
The only caution would be if you wanted to seriously compete in Concourse. Then leave it alone. Otherwise if you are so much of a nerd that you are afraid of this modification, some kind of public humilation, then stick to playing your video games and collecting Match Box miniatures. Maybe kool designer sneakers too? Those can't hurt you. What are you even doing with a real car to begin with anyway? ;)
I agree, the difference was big and noticeable in the first 100 feet.
I have the Arning with the TMC coils. If memory serves me correctly TMC in the 90's offered just the 520 spring and the same one 65-70. I just bought a pair of the Global West 640 coils and their 1" poly spacer. The car set for years on the suspension. I thought perhaps the springs became soft because of this.
I am looking at the Baer tracker bump steer correction kit. I know one person here is using one with a similiar set up.
Anyone else find this necessary?
-Keith
Quote from: 1967 eight barrel on January 08, 2019, 10:20:13 AM
I have the Arning with the TMC coils. If memory serves me correctly TMC in the 90's offered just the 520 spring and the same one 65-70. I just bought a pair of the Global West 640 coils and their 1" poly spacer. The car set for years on the suspension. I thought perhaps the springs became soft because of this.
I am looking at the Baer tracker bump steer correction kit. I know one person here is using one with a similiar set up.
Anyone else find this necessary?
-Keith
I have a "bump steer" corrector kit in the car. I'm told by others that the amount of bumpsteer induced by the lowering varies.
In my case, I thought it was pretty severe and your question reminded me of that and how the "corrector" kit just made that a bad memory of the past.
Yes to answer your question. I would classify the "corrector" kit as necessary. Others might not even notice the bump steer. I would wonder though if those individuals would know the difference between the speedometer and the tachometer? Just sayin. ;)