I am going to be swapping out the entire drivetrain (old- 289 C4, 8" rear) for new stuff (331, T56, 9" rear). I was hoping to be able to break in the new rear gears in the 9" using the old 289 and C4...
EXCEPT, the driveshaft is looking like it might be too long... How much clearance does it need to have before bottoming out to run for roughly 200-300 miles (long enough to break in the gears)? I'll be getting a new custom shaft when I put in the new engine and trans...
Could I jerry rig the transmission side yoke and just cut off about 3/4s to an inch? Keep in mind it will only be driven like that for about 300 miles, and will be babied to break in the gears...
What do you all think?
EXCEPT, the driveshaft is looking like it might be too long... How much clearance does it need to have before bottoming out to run for roughly 200-300 miles (long enough to break in the gears)? I'll be getting a new custom shaft when I put in the new engine and trans...
Could I jerry rig the transmission side yoke and just cut off about 3/4s to an inch? Keep in mind it will only be driven like that for about 300 miles, and will be babied to break in the gears...
What do you all think?
