My 48 Fleetmaster is back on the road again.
I replaced my standard 4.11 differential and torque tube with a 3.7 unit I purchased from someone who is hot-roding his 53 Chevy station.I am also using a set of 700 x 16 light truck tires witch gives a total overdrive of near 1.2
After driving for a couple of days around town I took her today for a final test on the motorway.With the help of GPS I found myself cruising nicely between 60 and 65 Mph

(2500/2600 rpm)with lots of *quiet* power to spare.

Chef- Chevy
The NOS after-market rear shock links seam to be fine but I do not think they will last long as the rubber is thiner and softer also the contraction in general is allot lighter as the originals.
Kevin
The Use of the ATF in the rear shocks improved their performance but I am still not happy with them.I have already got a NOS one so I am looking for a second one to show in the market then I will replace them.

Jianis