I did it. Used the "big bearing outer .850" spindles from an 89 Caprice station wagon and Global West upper a-arms.
Result; Braking was improved dramatically as was cornering. I also converted to wilwood rear 12 in discs at the same time.
Pros: Better braking, handling and ease of maintainence (pads vs shoes).
Cons: Unless you use the 1LE rotors and calipers the front unsprung weight is very heavy, resulting in a harsher ride. You also have to address the 5x5 bolt pattern from the b-body.
The b-body calipers have a retractable seal to reduce drag on the rotor that requires the proper "fast take up" M/C. Scrap any factory prop valve and get an aftermarket adjustable one.
You also need the proper alignment specs with the new geometry.
Global West has great info on the swap. They were around way before Hotchkiss and the others got into the game.
Awesome info, thanks..........
I read that aftermarket tubular lower control arms should be used with these.
What are you guys running in the rear? The oversized wheel cylinders?
And with the 12", the master has to be changed to, is that correct?