Description
COMP Cams 1823-16 – Rockers CB 1.73 7/16in Ultra Pro
Ultra Pro Magnum XD Rockers w/ 1.73 Ratio for Chevrolet Big Block w/ 7/16″ Stud
Machined from 8650 steel with a billet pushrod seat insert, these Ultra Pro Magnum XD rockers can handle up to 1,000 lbs of spring pressure. These 1823 rockers feature a 1.73 ratio for use with 7/16″ stud Chevrolet 396-454 Big Block.
The Ultra Pro Magnumâ„¢ XD Rocker Arms are engineered from durable 8650 Steel that outlasts and outperforms other inferior knock-off and import Rockers. A unique machined billet Pushrod seat insert offers exceptional durability. These new Stud mount Rockers are fully rebuildable and use precision-sorted needle bearings and hardened Roller tips to better distribute the load and reduce wear for a longer service life. In addition, they work with most diameter springs and retainers. The XD design utilizes advanced FEA and CAD design and development to improve strength, stiffness and MOI optimization for endurance, drag and circle track Applications.
Engine Family: Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)Maximum Valve Spring Open Pressure: 1000Rocker Arm Material: 8650 Chromemoly SteelRocker Arm Ratio: 1.73Rocker Arm Series: Ultra Pro Magnum XDRocker Stud Diameter: 7/16Amazon ASIN: N/AC.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: Yes, but must be a race/competition only vehicle.C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: Yes, but must meet tailpipe emission standards for year of vehicle.C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.C.A.R.B. Exempt for On-Road Vehicles?: NoC.A.R.B. Exemption Reason: N/AC.A.R.B. E.O. Number: N/A
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