Don't use the crank hub retaining bolt to rotate your engine!; By removing the crank hub or balancer and using a Moroso Crankshaft Socket Tool, engine builders have a positive way to turn over the engine; Tool makes it easier to locate TDC and BDC when degreeing camshafts; Broached keyway allows the socket (which fits 1/2 drive) to slide over the crankshaft snout and key. A knurled jam nut is used to position a degree wheel; Use Moroso Degree Wheel No. 62190(11), No. 62191(18), or No. 62192 Dual (18)

• Easier to locate TDC/BDC
• Broached keyway allows socket (fits 1/2 drive) to slide over crankshaft snout & key, & a knurled jam nut is used to position degree wheel (Use Moroso Degree Wheel)
• For SBC, 90° V6 Chevy, Super-Duty Pontiac/GM.

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Information:

Crankshaft Socket Tool; For Degree Wheel; By removing the crank hub or balancer and using a Moroso Crankshaft Socket Tool, engine builders have a positive way to turn over the engine; Tool makes it easier to locate TDC or BDC when degreeing camshafts; Broached keyway allows the socket (which fits 1/2 drive) to slide over the crankshaft snout and key, and a knurled jam nut is then used to position a degree wheel; Use with Moroso Degree Wheel (PN: 62190 11, PN: 62191 18, PN: 62192); Fits: Small Block and 90 degree V6 Chevrolet, Super-Duty Pontiac/GM 4 cylinder.