SOLD SOLD Low low mileage used Comp Cams "Thumper' camshaft and lifters. Cam and lifters have about 10 miles of run time before discovering cracked block. Lifters are in glass jar of clean oil. Buyers are welcome to inspect. This Comp Cam is part number 12-600-4 and listed as a street performance cam that make power from 2000-5800. All specs are on-line with Jegs and Summit. $165 plus shipping in USA only. PM me here on HAMB with questions or to purchase.