ARP Rocker Arm Nut - 7/16-20 in Thread - 0.550 in Shank Diameter - 1.200 in Long - Chromoly - Black Oxide - Aluminum Rockers - Set of 16 BLOWER-PREFILTER-3-BLK These control arms also feature

These control arms also feature grease-able Energy Suspension fluted polyurethane bushings and durable gloss powder coat

940 in Coil Bind

12 in Travel

The increased spacing on the exhaust port also requires the use of exhaust gasket Fel-Pro p/n 375-1409

Small block Chevrolet 1x4

ARP Rocker Arm Nut - 7/16-20 in Thread - 0.550 in Shank Diameter - 1.200 in Long - Chromoly - Black Oxide - Aluminum Rockers - Set of 16 BLOWER-PREFILTER-3-BLK These control arms also featureA rocker arm adjuster that doesn't require special tools and won't work loose. Threads on the heat treated Perma Loc Adjusters are machined exactly perpendicular to the adjuster bottom. a set screw is also machined flush on the bottom. All of these features help eliminate setting valve lash on a regular basis. ARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline.