Small Block Chevy 2/3 Groove Black Aluminum Pulley Kit for SWP Short Water Pump 283-350. Fits for Small Block Chevy 283 – 350 with a Short Water Pump. This is a brand new Small Block Chevy Black Aluminum Pulley Kit. The Water Pump Pulley is Double Groove and comes with water pump pulley bolts. The Crankshaft Pulley is Triple Groove. They are constructed of thick gauge aluminum and with a high quality Satin Aluminum finish. This kit also includes a Brand New Aluminum Machined power steering pump pulley. This is a single groove pulley. This fits all GM key-way power steering units through 1984 with a 5/8 Shaft. Will NOT fit press-on power steering pumps. Finally this kit also includes the aluminum alternator pulley with aluminum fan. This set is designed for most original GM alternators as well as aftermarket 1 or 3 wire alternators. The pulley diameter is 2 13/16 and comes complete with a dress up nose cover. A nice finishing touch to upgrade an old or new alternator. 5- Double Groove Water Pump Pulley (with bolts). Triple Groove Crank Pulley. Single Groove Aluminum Alternator Pulley With Nut Cover. Aluminum Alternator Fan Blade. Single Groove Saginaw “Key Way” Style Power Steering Pulley. Professional Installation is Highly Recommended.