ARC 7/8 Journal Cranks, Specs and part numbers below. - 6589, +.450 Stroke. Relief cut on mag side for cam clearance. Keyed, Comes with 26 tooth stock gear.
- 6591, 3" Stroke. Relief cut on mag side for cam clearance. Keyed, Comes with 26 tooth stock gear. Use this crank for motors under 3" Bore
- 6592, 3" Stroke. Relief cut on mag side for clearance. Keyed, Comes with 26 tooth stock gear. Use with 3" bore or bigger.
- 6593, 3" Stroke. Keyed, Used for motors under 3.5 Bore.
- 6599, 3" Stroke. Keyed, Used for motors 3.5 Bore or bigger.
- 6598, 3" Stroke, Splined, Used for motors 3.5 bore.
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