For SBC Chevy 283 350 1 Groove Long Water Pump Pulley &1 Groove Crank Pulley Kit

--Fits All SB Chevy Engines When Using A Long Water Pump

--Fits SB Chevy 265 283 305 327 350 383 400 Using A Long Water Pump

--Kit includes:

1 piece of 1 groove water pump pulley Aluminum polished.

1 piece of  1 groove crank pulley Aluminum polished.

--Water Pump Pulley: 6 9/16" Diameter, 2 3/4" Tall, 2 3/4" Bolt Pattern, 1 1/8" Center Hole 

--Crank pulley: piolt hole 5/8",  6.60" diameter 

--Package: Including all items in the picture.

Note: Professional Installation is Highly Recommended.