A few advanced design suspension mod questions

[Root2812]

Hey guys,

My have a 1950 short bed and I just have a few questions before I spend a few grand on suspension parts.

In the front I plan on using a mustang II style suspension. I was thinking of going with the Speedway Motors parts because of the price. Does any one have experience with them? If I go with the standard coil spring suspension does any one have a suggestion of what spring rate to get (I will have a 5.3ls in there). I do know quite a few advanced design owners have a mustang II. Also if I get parts for a MII kit and later need replacement parts will any MII parts work or will I be stuck with speedway for life?

My biggest questions are for the rear. I have a 8.8 rear end out of an explorer (3.73 gears, Ford's equivalent of Posi, and 31 spline axles). Its pretty strong and the width is right with the disk brakes. I was thinking of using a welders series triangulated 4 link with coil overs in the back. The question is that I want to be able to tow up to 4000 pounds (not sure what the tongue weight is) and I don't know if I can do this with coil overs. I'm afraid that to stiff of coils would make it ride rough unloaded and weak coils would make it sag loaded. Please share your suggestions and if you think the triangulated 4 link is a bad idea for this need please make a suggestion. I'd like to stay away from any ride assist or air bags if I can.

Thank you
Greg

[lolife99]

Anyone?
You might ask over in the 47-55 area,...

[Root2812]

Originally Posted by lolife99

Anyone?
You might ask over in the 47-55 area,...

Thanks for posting. I post over in that area a lot. I was just hopeing that there would be more people here with knowledge of spring rates, towing with a 4 link, and the interchangeability of Mustang II parts.

[blazins10]

m2 parts depends on if u have aftermarket tube arms or stock replacement
one , some of the tube arms use a screw in dodge ball joint
i have a suicide doors 4 link on my 2000 sierra and i tow a trailer alot
with about 7000 total weight , i use slam ss7 bags and never had an issue
but there kits are way over kill
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[Scottshotrods]

How much are looking to spend on a complete ifs kit for your truck?

You want to make sure your ifs you choose is made in the USA.

You want to make sure the company you choose will have good customer support on there products.

Here at Scotts we have a weld in kit and a bolt in kit for your truck.

We have a nice forum discount for members.

If you would like some more info you can send me a e-mail at scotts@scottshotrods.com
I will be more than happy to send you more info and many images of our ifs kits in several 48-54 chevy trucks

Justin
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[andrewmp6]

I would talk to scotts hot rods and rob at nolimit engineering before buying anything.You might spend a little more but you will have a better ifs kit with years of use with no problems.When your welding on the link mounts to that 8.8 go ahead and fully weld up the axle tubes to the center.From the factory it only has 2 plug welds pre tube.

[68c10airstream]

Pulling 4,000lbs is no problem for me as i pull a 3,000 lb old airstream behind my 69 c10 5.3 4l65e in overdrive 60 mph lockup converter engaged, rpm's= 1650. USE LEVELING BARS. I think the biggest mistake people make is a bunch of tongue weight with the trailer nose down, truck rearend down, etc. I use leveling bars with sway control, (reese style from the 70's) and i have passed traffic 80 mph in cross winds with no sway issues. I know, a little bit of an issue here, as the operator. Airstreams are known for lower center of gravity and being rounded helps also, torsion trailer suspension with shocks. First class setup as far as i'm concerned. Oh, my trailer is a single axle, as a tandem axle trails better. Go for it and good luck, Brian F.

[68c10airstream]

I probably should add that my truck is lowered 2 1/2" spindles only in front and 4" lowered coils in back. I have hauled 1,000lbs of pavers in the box and didn't bottom out with no "c" notch in frame (i refuse to). I know, a little old school. You can have a nice ride and still haul weight, ride nice and tow weight, just use leveling bars with sway control.

[Root2812]

I'm not familiar with leveling bars. Do you have any pictures?