Edelbrock #8591 is a Head Bolt Kit for Big-Block Chrysler Engines with Edelbrock 60185, 60189, 60825, 60839, 60917, 60919, 60925, 60929 and 60149 Performer & RPM Cylinder Heads. This kit contains a complete set of Head Bolts & Washers.
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The Edelbrock #8591 bolt kit contain a complete set of the highest quality head bolts and hardened washers available. Cold-formed to ensure molecular integrity and heat treated prior to thread rolling and machining. Reduced diameter bolt heads eliminate the need for valve train removal to facilitate cylinder head re-torqueing. Hardened and parallel-ground washers are included. Rated at 170,000 p.s.i.
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Hazardous Materials Warning
WARNING: This product can expose you to Chromium, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.
The Edelbrock #8591 is made specifically for big block Chrysler; Installation is the same as for original equipment cylinder heads. Consult service manual for specific procedures, if necessary.; Be sure that the surface of the block and the surface of the head are thoroughly cleaned to remove any oily film before installation.; Use alcohol or lacquer thinner on a lint-free rag to clean. Apply oil or suitable thread lubricant to head bolt threads and the underside of bolt heads and washers.; Torque to 70 ft./lbs. in three steps (40, 55, 70) following the factory tightening sequence.; Apply a continuous 1/8" bead of automotive RTV silicone sealer to end sealing surfaces on block and along bottom of intake ports on cylinder head. Also, apply a thin bead of sealer around intake ports on cylinder head and gasket.; Position intake gasket thin valley cover in place and tighten bolts down. Then, place intake manifold in position and torque manifold bolts to 25 ft. lbs.; Rocker shaft hold-down studs, nuts and washers, for 2 places marked (S) in each head, are supplied in this kit.; Double nut both studs and screw them in until they reach the bottom. Install rocker shaft, factory concave washer and hard washer supplied with this kit.; Apply 30W oil to fine threads and under nuts and washers and torque nuts to 25 ft./lbs. A head bolt re-torque is recommended after initial start-up and cool-down (allow 2-3 hours for adequate cooling).