GM truck arm rear suspension conversion

Transmission to Rear-end

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PackardV8
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GM truck arm rear suspension conversion

Post by PackardV8 » Mon Sep 03, 2018 10:30 am

Anyone here ever converted a parallel leaf rear suspension to the truck arm coil spring design? If so, what, if any improvements and what were the tradeoffs?

FWIW, my dad bought a 1960 1/2t Chevrolet with the then-new truck arm suspension. It was the beginning of trucks comfortable enough to be daily drivers. Prior to that, most old trucks driven unloaded would just beat the driver unmercifully. The tradeoff was the coils were too wimpy to handle full GVW and half again more, as many farm and work trucks were loaded. To that end, the GMC version could be had with leaf springs.
Jack Vines
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lefty o
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Re: GM truck arm rear suspension conversion

Post by lefty o » Mon Sep 03, 2018 3:21 pm

cant speak for the conversion kits, but the factory truck arms rode and handle way better than leaf springs, and they work pretty darn good for drag racing too.

Kenova
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Re: GM truck arm rear suspension conversion

Post by Kenova » Mon Sep 03, 2018 4:49 pm

They can be made to work quite well on the street or track.
Trade offs include cutting into the rear floor of your car and it can be difficult routing your exhaust in the rear.
Have you checked out these guys? http://www.hotrodstohell.net/truckarm/t ... _index.htm

Ken
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Retaining it is the hard part.

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