One wire lock-up, 4 spd automatic w overdrive into A-body.

Well, I ordered up a driveshaft today from Dr Diff. I had already picked up a forged Mark Williams transmission output shaft and have a full Dr Diff built 8 3/4 with alloy axles , a 489 case with an Eaton true trac, 3.91 gears and a forged 1350 forged flage with u-bolts.

The center to joint, to center of joint measurement came out to 51 7/8". It's a seemless chrome moly shaft that will have
the 1350 non-drilled u-joints on it.

It should be plenty strong for this little 500 hp a-body.