Edelbrock E-Series Cylinder Head Bolt Kit #85602 is a high-quality set of bolts for use with Ford 351C heads equipped with Edelbrock Performer RPM #61629 cylinder heads. This bolt kit contains all parts necessary to replace the factory head bolts. E-Series bolts have a yield tensile strength of 190,000 PSI for strong and reliable loading with generous filleting throughout to eliminate stress risers. Bolt threads are rolled after heat-treating for superior form and strength, while a small hex head provides extra space for socket clearance in tight situations. E-Series Cylinder Head Bolts have a durable black oxide finish with sealer and come with the distinctive Edelbrock E stamped into the head.