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**mr48chev** · 10-26-2011, 10:15 PM

I ran them for a long time when I had the 283 in the 48 with a 4 speed Muncie M21 with no problems. If you don't use lowering blocks it will raise the back end of the truck about an inch and a half and maybe more. That wasn't an issue then for me but it might be for a lot of guys.
It rode ok and I even towed a 16 ft U haul trailer from Texas to Washington with it but that was overdoing it a bit.

10-26-2011, 10:15 PM	#4
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,838	Re: Rear springs for ad I ran them for a long time when I had the 283 in the 48 with a 4 speed Muncie M21 with no problems. If you don't use lowering blocks it will raise the back end of the truck about an inch and a half and maybe more. That wasn't an issue then for me but it might be for a lot of guys. It rode ok and I even towed a 16 ft U haul trailer from Texas to Washington with it but that was overdoing it a bit.