Jaw uses the industry standard six 3/8" bolts on a 2.782" bolt circle and is made of heat treated steel to provide long life. The center of the jaw has a .500" ratchet provision to stroke the motor over when running valves or setting timing. Jaw measures from pulley mounting surface out to the top of the jaw 2.310" to get the jaw out in front of a center flange top blower pulley.
RBS sells the bolts needed for this engine jaw 3/8-24 x 1.125" twelve point NAS #400-6125NAS you will need six.
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