What Transfer Case For Turbo-400 K20 BBC Build?

[hatzie]

Originally Posted by sweetk30

my info above is from just my time with 4x4 trucks .

i went threw 2 dana 44 3/4 ton fronts with 36" tires and mild sbc . the 2nd blown axle assembly i said screw this and went dana 60 . unbolted it from the donor truck and have been running it now for close to 15 years . only serviced the wheel bearings 1 time and freshened up the king pin service parts no pins swapped .

i have tryed to blow it up even with a built 400 sbc and 38" tires . even now its under my plow truck with a 8ft or 9ft fisher plow depending on how much snow i need to move .

each to there own . its all in how you use it / build it / play with it and just luck !

The tire size rather than the engine specs have more to do with what front axle you'll get away with.

When you start rolling more than 33" tires the slightly smaller parts in the Dana 44 become a liability... as you discovered. That amount of rubber is simply too heavy for the half shafts. The biggest tires I ran were 265/75R16 Michelin Ice and Snows... 31-1/2". Not going for looks just traction with a 7-1/2' Fisher plow and a bed full of sand.

I'm surprised you get away with a stock Dana 60 running 38" tires. Usually, the stock hubs and half shafts become fuses with big tires.