rear shock crossmember modification

krowbar · May 13, 2015

I'm under the car last night, scoping things out since I've got the rearend out. I can't believe how flimsy the rear shock crossmember is. I'm running air shocks now. I'm thinking of replacing the original crossmember with a piece of 4x2x3/16 steel tubing and welding it in between the rear frame rails. cut out slots in the bottom of the tubing for the shocks to fit into and bolt them up like before. I think it would give the rear of the car some more firmness doing this anyway.Anybody ever BEEF UP the crossmember before?

Average Joe · May 13, 2015

I added a four link with a steel tube shock crossmember so I cut my factory one out.I have steel bracing throughout the whole car. It really makes a difference.

moparcrazy · May 13, 2015

i haven't done it yet but its on the list...but frame connectors really made a big difference in the stiffing of both of my cars

Badvert65 · May 13, 2015

I have heard of issues with the upper (rear) shock mount, especially when using coil-over or air shocks. This particular cross member was never designed to support the weight of the car. It is just a place to mount the shocks. It's one of those things that gets taken for granted. It never hurts to beef up things like that.
Also, X2 on the frame connectors.

krowbar · May 13, 2015

I might go with a piece of 2" sch 80 pipe and weld some tabs to it for the shock mount instead of the tubing. I will make some 1/4" backing plates to stiffen the spring hanger body mount.

Cranky · May 13, 2015

2x3x1/8 is more the enough. but if you think you might crush the 2x3, insert a piece of tube and weld it in but a shouldered bolt with a lock nut will do the trick. Good and snug is all it needs on the shock mount or you'll squeeze the rubber bushing to death. What kind of power do you have with this?? 1/4" thick anything is over kill and so is sch 80 stuff. 2" 80 is 7/32" wall thickness and another 32nd will make 1/4". You buildin a tank or a car??

krowbar · May 13, 2015

I've got 500 horse and 600 tq roughly. While I'm under there I'm gonna stiffen some stuff up. I have easy access to structural steel materials is why I'm using the thick stuff. Better to be safe than sorry latter. Never know what future plans may hold. The shocks have a sleeve on the top rubber mount so I can't smash the bushing. Tank or a car? Haven't decided yet.lol

moparcrazy · May 14, 2015

This is a new product from a mopar only shop... magnumforce

rear shock crossmember modification

krowbar

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Average Joe

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moparcrazy

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Badvert65

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krowbar

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Cranky

Banned Henchman #27

krowbar

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moparcrazy

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