| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Most cranks come drilled for a pilot bushing or bearing. Drilling a crank in the block is not acceptable, crank would need to be set up, not a normal procedure. Automatics do not come with pilot bushings, torque converter registers in flywheel since they always turn.
Pilot bushings, bronze or brass are easily made or bought. Pilot bearings are easily bought, however, when they fail, they frequently damage the input shaft which may or may not be replaceable, especially on an older vehicle.
If one is changing from automatic trans. to manual, one must always check to make crank is drilled, might be necessary to get another crank if not drilled.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
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