So I thought I'd post an update on my truck and get some more advice.

I pulled the motor and tranny out last weekend and tore the motor apart and dropped off the block to the engine shop, then today, I dropped the tranny off at the transmission shop to find out why it started spewing fluid out of the front seal at the last pull.

The engine is going to be completely rebuilt with Eagle H beams, JE forged flat tops .030 over, Dove heads built by Scott Johntson at Re-incarnation automotive, Comp cams Roller cam 266/272 @.050, .685/.699 lift 110deg. and a 106 CL. Titanium locks, Canton main stud girdle, a valve stud girdle, Victor Dominator intake also ported by Scott, an MSD pro billet distributor, and a 1050 dominator. The headers are going to to be custom with 2-1/8" tubes into a 3-1/2" collector.

ITPA has us limited to 470 cubes so I can't go any bigger. (dang it)

What do you guys think I should do about the drive shafts? Currently I am running stock diamater shafts (with a stronger tube) and HD u joints. Also, I am currently running a 10.25 rearend (and I have a complete spare 10.25 for parts), do you think that will survive for this season, or should I start looking for a Dana 70?

The rules say I can run a Rockwell 106 in the rear. Where can I get one?

Alan,
If you decide to run a Rockwell you need a standard pinion front to get the gear ratios right. Rockwells are all low gears. I have a 70 here if you are interested and I also have a 14 bolt also, so you had a backup. What T-case does that truck have??

Travis

for shafts, i like the militaries, but we have a local army salvage yard here so they are easy and cheap. Mostly because of how they bolt up, they are easy to take aprt and you dont loose any caps, also the shafts are hefty enough for all youll ever do. You do have to do some maching and welding, if the machine work it tight, i have run a yock and forgot to weld it and it held. What i did was take a yoke for the transfer(profab you can buy them allreay made) or rearend, turn it down to a cylinder, then bore a hole in the military yoke to press fit you cylinder, press then weld both ends. And napa here has the joint to fit, but ive never broke one, but put new ones in when we made the shafts.

As for axle, I would go rockwell now, and save money and time in the long haul. I ve done a couple trucks that had dana 60 fronts, the ford front 60 was limited to 5.2 and it got a 5.17 i think rockwell, they dont match exact, but worked great, the other had a chevy dana 60 and had the lower 6.17 in the front, again the match wasnt exact, but was closer then the stock ford 60. I go to the local big truck salvage and get a single speed rockwell 106. Or ask around, super mod and mod trucks always seem to have one for sael. There is anouther that is slightly smaller i think it is a 107f but not sure. They look alike to me, but never sat two side by side, was told the other was just a little smaller but not much. But seen them used in blower trucks so they are strong as well.

Alan,
Does that truck still have the IFS front?? The smaller Rockwell is a 100 and it would last in that class, but they are harder to find. Hes got an auto and later model t-case so making the gear work is gonna be hard. It will be easier and have a better weight bias to run a 70, 14-bolt or an 80 until he steps up the power and goes to a stick tranny.

But this is just my opinion.

Travis

Travis,

No, I junked the IFS and swapped in a Dana 60 from a Ford 1 ton. I am interested in the 70 if I can afford it. I just ordered the cam from Scott, and he started my heads this week, so money is tight this month. But please shoot me an email with the details on your 70, and let me know how much.