Upgrade for '70 Swinger 340 rear

70dart340 said
Many thanks to all over the years(!) for the help on my '70 Swinger 340. My 408 is in the end stages of construction, I have a Pat Blais built 727 with a freshly built FTI 3600 stall speed hard hit converter. Time now for the rear end. The stock open 3.23 8 3/4 will ned help for the mostly street driven 500+HP small block. I also have a complete 8 3/4 with a 3.23 SG I picked up years ago. I'm thinking of rebuilding the spare rear with a 3.55 SG and new SS springs. Maybe Caltracs? Looking for advice from my FABO family for the most important part of the traction puzzle. My hide is as thick as an old Santa Gertruda, so let your opinions fly! It's been quiet around here lately, so I thought I'd kick that hornets' nest! Ford 8.8? Dr. Diff? I'd like to utilize what I've collected over the years, but I want a badass, stock looking 1970 Swinger 340. Thanks to all in advance.

Hey Paul. SS springs with rubber bushings ride the best and a lowering block can be used to drop the rear if you desire. I can personally swing by and show you what a two inch drop block does on my Magnum.

I have Caltracs on the wife’s car. So I can return the next day and have you drive it. The mono springs by themselves are OK and fine but adding the tracking bars under them downgrades the ride a shade or two, depending on how you like your stuff.

On my ‘71 Duster, I have SS springs & the stink bug look is t really big or massively present. Tires are part of the key and that’s front and rear. Also the fronts ride height has a play in the rake the car will have.

I’d drive the Duster over but I need to work on it before anything happens.