Everything you need to rebuild your Small Block Chevy head. Chrome moly retainer, hardened 11/32" valve locks, 3/8" screw in stud, positive type valve seal and stock diameter valve spring. 16 head kits are required.

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Manufacturer:

Pioneer Inc

Pioneer HK1 GM Performance Head Kit Handles up to .490 lift

Part #: HK1

Everything you need to rebuild your Small Block Chevy head. Chrome moly retainer, hardened 11/32" valve locks, 3/8" screw in stud, positive type valve seal and stock diameter valve spring. (Requires 2 kits per cylinder)

Pioneer HK2 Performance GM Head Kit Handles up to .550 lift

Part #: HK2

Everything you need to rebuild your Small Block Chevy head. Chrome moly retainer, hardened 11/32" valve locks, 3/8" screw in stud, positive type valve seal and stock diameter valve spring. (Requires 2 kits per cylinder)