If you going to run A/C you will need a 2 groove. See my store for matching crank and other pulleys. How can you tell if your water pump is long or short?
Indication is if your alternator is originally on the driver's side of the engine then it's a short water pump. If it's originally on the passenger's side then it's a long waterpump. Also, if you can fit your hand between the waterpump & the timing chain cover then you have a long waterpump.
We only accept these cards from U. The item "SB Chevy Polished Billet 1 Groove / Belt Short Water Pump Pulley Kit 283 327 350" is in sale since Thursday, December 17, 2015. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Belts, Pulleys & Brackets". The seller is "tssperformance" and is located in Duarte, California.This item can be shipped worldwide.