Description
Fits Following Engines: 327 CID Chevrolet Small Block Generation I
625˝ Thread Size 1 M6 x 1
3/8˝ x 3/4 x (ID x OD x Thickness)
improving overall engine efficiency
Developed for use on closed-course competition circuits
ARP 646-3500 SAE Bolt Kit 1/2-13 x 3.500 hex SS bolts ymm_37 Fits Following Engines: 327 CIDSpecifications Socket Size(s) 9 16 hex UHL 3. 500 Thread Length 1. 250 Grip Length 2. 250 Thread Diameter Pitch 1 2 13 Grip Diameter 1 2 Wrenching 9 16 Head Height 0. 450 Collar Diameter 0. 850