Mopar B-body Rear suspension Help

[G_T]

Okay folks, the mock up has raised another question... I'm feeling "needy" right now ;)

Background: 70 Dodge Charger, Moser 60, Tubbed, "planned" to use Hypercoil leafs.

My problem is I can not get the ride height correct. I need to lower it another 2.5 to 3" in the rear and I don't think I am going to get the leafs to work out. I went as far as to attach the front of the leaf to the lowest ride height whole and rest the back side on the trunk floor - even loaded ~300lbs in the trunk. No dice. See the first pic - the wheel well lip needs to come down to the top of the Forgeline Wheel lip. Obviously 3" lower blocks ain't gonna work. My clever daughter said "Dad why don't you just flip the leafs upside down so they bow up and not down?" :lol:

I am looking for suggestions on what to do next. I have *zero* issue modifying the suspension/floors/etc. I think I need to go to a 3 or 4 link system with coilovers.

Let me hear your suggestions as well as vendors that offer something to address this need for a 70 Mopar B-body. I'll make everything if I have to...

So, here are my constraints for the rear:

1) Car will be driven on road course/autocross - not targeting drag strip.
2) Work with existing Moser 60
3) Rear sway bar capability - body mount prefered
4) Work with mini-tubs.
5) Nice to have is work with existing leaf relocation kit (moved in 3" to rails).
6) Watts link - or nothing if the triangulated system does not require it. I have what I need to make the watts link.
7) 3" Exhaust
8) Coil-over - not interested in air bags...
9) Retain stock rear seats.
10) Obviously, need to be able to set the ride height 3-4" lower than stock.

I think 2 & 9 eliminate Lateral Dynamics 3-link. I looked at other links on the site and know there are a lot of good choices and preferences. Looking for something to work with the above constraints.

[vipercuda]

Okay folks, the mock up has raised another question... I'm feeling "needy" right now ;)

Background: 70 Dodge Charger, Moser 60, Tubbed, "planned" to use Hypercoil leafs.

My problem is I can not get the ride height correct. I need to lower it another 2.5 to 3" in the rear and I don't think I am going to get the leafs to work out. I went as far as to attach the front of the leaf to the lowest ride height whole and rest the back side on the trunk floor - even loaded ~300lbs in the trunk. No dice. See the first pic - the wheel well lip needs to come down to the top of the Forgeline Wheel lip. Obviously 3" lower blocks ain't gonna work. My clever daughter said "Dad why don't you just flip the leafs upside down so they bow up and not down?" :lol:

I am looking for suggestions on what to do next. I have *zero* issue modifying the suspension/floors/etc. I think I need to go to a 3 or 4 link system with coilovers.

Let me hear your suggestions as well as vendors that offer something to address this need for a 70 Mopar B-body. I'll make everything if I have to...

So, here are my constraints for the rear:

1) Car will be driven on road course/autocross - not targeting drag strip.
2) Work with existing Moser 60
3) Rear sway bar capability - body mount prefered
4) Work with mini-tubs.
5) Nice to have is work with existing leaf relocation kit (moved in 3" to rails).
6) Watts link - or nothing if the triangulated system does not require it. I have what I need to make the watts link.
7) 3" Exhaust
8) Coil-over - not interested in air bags...
9) Retain stock rear seats.
10) Obviously, need to be able to set the ride height 3-4" lower than stock.

I think 2 & 9 eliminate Lateral Dynamics 3-link. I looked at other links on the site and know there are a lot of good choices and preferences. Looking for something to work with the above constraints.

We have developed the prototype system that is a weld-in four link system. We mini-tubbed our 70 roadrunner to accept 335 tire. I should have pictures at the shop. This system was developed for our Hemi X project that we plan to unveil at SEMA this year. Please feel free to email me at [email protected]. We should have a kit available very soon for you. It should meet all your requirements.

Thanks
Mike
Time Machines
Mr. Norm's Garage

[G_T]

While I'm waiting for info from Mike on their solution - I was curious if anyone has had any experience with the Street-Lynx from RMS? I'm gonna drop Bill a note for info - but also looking for real world experience.

Thanks
GT

[marolf101x]

We also offer a bolt-in 4 link for that car. It comes with Shockwaves, but you could replace the Shockwaves with coil-overs.

http://www.ridetech.com/products/Chrysler_B_Body_68_70_AirBar_w_ShockWaves-823-966.html

[rjsjea]

While I'm waiting for info from Mike on their solution - I was curious if anyone has had any experience with the Street-Lynx from RMS? I'm gonna drop Bill a note for info - but also looking for real world experience.

Thanks
GT

Several guys on bigblockdart run Bill's Street Lynx. They really seem to like it. www.bigblockdart.com . Definately the least fab work to install

Gforce design concepts runs one in a Demon he has posted here and on PT.com

I considered buying it, but had Bruning Auto build me a tri4link on my Demon instead.

[andrewmp6]

I had to dig out my old bookmarks but here http://www.xvmotorsports.com/products/detail/index.cfm?nPID=67&cid=2&cdesc=Suspension its a 3 link with a pan hard you have to weld it on tho.You could change it to use a watts link if you want one bad enough.

[moparnut]

Why not just try some standard leaf springs with the correct arch? I had these made and they sat just right for my application. The only thing is on a B body is the upper frame rail may have to be notched a little or the rearend will bottom out on hard bumps.

[G_T]

Moparnut - what springs and arch did you use for your application?

[G_T]

Thought I'd give everyone an update on the direction I took for the rear suspension. I spoke with Bill Reilly at RMS and went ahead and stepped up to his Street-Lynx triangulated four link system. I figured I have poured so much $ in this project thus far - why cheap out on the rear suspension? :unibrow:

Bill's kit was extremely easy to install, excellent fit and engineering, and very beefy. His customer service and willingness to answer questions is outstanding. Now I have the luxury of additional adjustability in the rear :thumbsup:

As it sits now in the pics, I can lower it another 2" and still have 4" of suspension travel. I do need to modify the floor a bit to clear the Moser 60 pinion snubber, if I want to drop it that much (2" plus 4" max squat). Should be no problem. I'll also need to notch the rear frame rails a bit for clearance when I install the rebound bumpers. By a stroke of luck - or perhaps clever forethought, I had already boxed in my frame rails when I replaced the floors. :D

[rjsjea]

:thumbsup: nice stance...

[ProdigyCustoms]

Awesome. I was thinking about your project a few days ago. Wondered how you were coming.

Good to see.

Get R Done!

[GHOSTDANCER]

Stance is perfect :thumbsup: :cheers: :cheers:

[autoxcuda]

Why not just try some standard leaf springs with the correct arch? I had these made and they sat just right for my application. The only thing is on a B body is the upper frame rail may have to be notched a little or the rearend will bottom out on hard bumps.



I agree. Just contact the hypercoil with the weight of the rear of the car, the rate you want, and how much arch you want/need when installed. ESPO Springs and Things I think would be a better help.

There are three or two hole front spring hangers. And you could install a rear slider with a bolt in plate to the frame. Add shim plates to get the right anti squat and ride height.