Review on 🔧 BBK 1603 Underdrive Pulley Kit for GM Truck - 3 Piece CNC Machined Aluminum, Suitable for 4.3/5.0/5.7L Engines by Greg Baker

I first fitted the much larger alternator that came with the kit and didn't notice any voltage change. The voltage stayed at 14.3v. I tried the factory pulley and only got 12.2, so I had to unplug the battery after starting to even get the correct reading. My biggest complaint was that the water pump pulley is identical in size to the factory 98 c1500 4.3L pulley and does not line up with the water pump center hole. I could save $60 and just get a two pulley set. The crankshaft pulley was already installed when I found it out and I didn't want to mess with sending it back. final torque. The cost and time of this kit is hardly worth it, it will probably be 5 years before I recoup the gas mileage savings.