Got the fresh rear driveshaft installed tonite, no more drivin' on the front axle only.
Took the rear half of the f350 shaft over to anderson bros. Truck and equipment in eugene on Monday for a looksee. When six states shut down the eugene operation, their driveline guy, Mike levenhagen went to work for them since they also bought the entire driveline shop out of the six states operation. Quite an impressive bunch of gear is used in building this stuff!
This guy is a genius! I spent an hour being educated by Mike last Monday, and another hour today pickin' his brain about this stuff!
So he cut 2" out of the Ford shaft (which is 3" toob with 0.065" wall thickness), then "straightened" it using the heat/shrink technique that Jeff and Darren have described regarding straightening d44 axle tubes.
I had a fresh 1330 rear output yoke (larger replacement for the oem 1310) for the np 205 transfer case, turns out that the Ford shaft uses 1330 u-joints also, even though they are "specials" that have a reduced diameter bearing cap. Just so happens that Mike had on the shelf a nos "obsolete" slip joint and stub shaft for the 1330 that he gave me for half price! I also had a 1350 yoke but we decided not to use that one since Mike had such a great price on the slip joint system, a new one for the 1350 yoke would have run well over $150!
So the entire driveshaft build ran $222 and included new "u" bolts for the 1330 "special" joint used at the rear axle pinion and likewise for the front 1330. By comparison, a full boat fabrication using new tubing and new end hardware (for 1350 yokes which I have several of for both the pinion end and the transfer cases) would run about $425.
Can't say enough about my experience with Mike at anderson bros.! I'd budgeted $350 for this shaft build based upon telephone quotes from two other local driveline shops.
Mike had some recent specialty shafts sitting on the table waiting for pick-up, all were for some exotic off-road rig including several highly modded cv couplings/shafts.
A quick five mile test drive was the real test. Acceleration is significantly improved (it should be based upon the 4.10 gears), I was able to actually smoke the dual wheels with a hard launch! Didn't take the time to make a mph comparison with the gps vs. Engine rpm, I'll do that later.
I did put the rig across the scales today, with a full load of fuel, all spares I normally carry, and no spare tire, the weight registered at 5150lbs.! That is a net loss at this point of over 600lbs. Since losing the oem pickup bed and fiberglas shell (and the oem rear bumper)!!! The transmission shifts out real quick due to the significant weight reduction, so the kickdown linkage will need to be played with some. By the time the bed is completed with the tail section and secondary receiver added back on, I think the final weight in fighting trim will be around 5300lbs.