ARP 641-4750 SAE Bolt Kit 5/16-18 x 4.750 12pt black oxide bolts ymm_48 This track-oriented exhaust needs no

This track-oriented exhaust needs no remapping and has been developed for use on closed-course competition circuits only

Fits Following Engines: 496 CID Chevy Big Block V8

Choice Of Hex or 12-Point Heads

Specifications Socket Size(s) 10mm 12pt UHL 60mm Thread Length 22mm Grip Length 38mm Thread Diameter-Spacing M8 x 1

with gains of +25

ARP 641-4750 SAE Bolt Kit 5/16-18 x 4.750 12pt black oxide bolts ymm_48 This track-oriented exhaust needs noSpecifications Socket Size(s) 3 8 12pt UHL 4. 750 Thread Length 1. 000 Grip Length 3. 750 Thread Diameter Pitch 5 16 18 Grip Diameter 5 16 Wrenching 3 8 Head Height 0. 300 Collar Diameter 0. 620