Gen III LS1 Head Bolt Kit

Special Price $398.66 Regular Price $442.95
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Edelbrock #8596 Head Bolt Kit for 1997+ Chevrolet Gen III LS1 w/ Edelbrock or GM Heads. Recommended for use with Edelbrock LS1 Cylinder Heads #61989, 61999, 61869, 619969, 79939, & 79949 Cylinder Heads. Includes Head Bolts and Washers.
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The Edelbrock #8596 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.



Manufacturer Edelbrock
Application Application Specific
UPC 00085347085965
Quantity Kit
Thread Type Coarse
Thread Diameter (10) 0.3149 in, (20) 0.433 in
Minimum Length 1.89 in
Color Black Oxide
Availability Note Available to Order
Warranty 12 Months
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
Installation Notes
  • The Edelbrock #8596 is made specifically for Gen III LS1 Engines; Installation is the same as for original equipment cylinder heads. Consult a factory service manual for specific procedures, if necessary. Factory manuals can be purchased direct from Helm at:; 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.; Be VERY careful to remove any coolant or other fluids that may be in the cylinder head bolt holes in the block. These bolt holes are sealed at the bottom, and any fluid trapped in the holes will cause the block to crack when you torque the bolts.; When using the GM factory head bolts, be sure to replace all of the bolts with new bolts, and to follow the factory recommended installation procedures. The factory bolts and installation procedures do not call for the use of oil or any lubricant on the threads. When using aftermarket bolts or studs, follow the manufacturer's recommended torque specifications; A Torque Angle Gauge is required for proper installation. Torque to yield fasteners are not designed to be re-torqued after installation.
Finish Black Oxide
Head Drive Type Hex
Length (10) 1.89 in, (4) 4.01 in, (16) 6.22 in
Material Chromoly