Complete kit includes retainers and locks. Springs made of highest quality spring wire. Springs precision wound to close tolerances. Includes superior quality steel retainers. Includes 7 degree heat-treated valve stem locks. Retainers and locks black oxide coated. Non-Rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit. Product Features:For Use With Cast Iron HeadsSprings Made of Highest Quality Spring WireSprings Precision Wound To Close TolerancesUse with Original Equipment Heads Only
