The Crankshaft Pulley is Triple Groove. They are constructed of thick gauge aluminum and with a high quality Satin Aluminum finish. This is a single groove pulley. This fits all GM key-way power steering units through 1984 with a 5/8" Shaft.
Edelbrock 2925 Super Victor Small Block Chevy 23 Intake Manifold SBC 350 383 400
Bowtie GM 10051103 Small Block Chevy Alum Intake Manifold 23-degree Race NASCAR
New Lightweight Racing Bellhousing for Small Block Chevy's and Big Block Chevy's
Lightweight Racing Bellhousing Fits Small Block Chevy SBC & Big Block Chevy BBC
ARP 134-5402 Small Block Chevy 2-Bolt SMALL Journal 283 327 Main Stud Kit
ARP 134-5002 SBC SMALL JOURNAL MAIN BOLTS 2 Bolt Mains Small Block Chevy