Title:   Fit for Small Block Chevy Aluminum Water Pump Pulley 1 Groove LWP Long Water Pump fit for SBC 327 305 350   Application:   Will fit for any SB Chevy Engine when using a LONG water pump (fit for SB Chevy 265 283 305 327 350 383 400 V8 Engines)    Description:   Material: Aluminum. 
Finish: Machined 
Dimensions: 6-9/16" Diameter, 3" Overall Height. 
Specs: 2-1/8" Bolt Pattern, 5/8" Pilot Hole 
Belt Type: V-Belt 
Grooves: Double   Note:   the item size in our photo and description, if you bought the wrong size, we'll not responsible for the mistake, please kindly be noted, thanks. Minor modifications or adjustments maybe needed for some of our products. All items are Brand New unless stated otherwise on the listing. We sell DIY (Do It Yourself) Items with a few exceptions. Professional Installer Is Highly Recommend, No Installation Instruction Included.   Include:   1 Pcs (same as on the picture )