COMP Cams - 1820-1
Rocker Arm - Ultra Pro Magnum XD - 7/16 in Stud Mount - 1.70 Ratio - Full Roller - Chromoly - Big Block Chevy - Each
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. This 1820 rocker features a 1.7 ratio for use with 7/16" stud Chevrolet 396-454 Big Block.
Engine Family: Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
Maximum Valve Spring Open Pressure: 1000
Rocker Arm Material: 8650 Chromemoly Steel
Rocker Arm Ratio: 1.7
Rocker Arm Series: Ultra Pro Magnum XD
Rocker Stud Diameter: 7/16
Amazon ASIN: B005JUX4AY
C.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?: No
C.A.R.B. Exemption Reason: N/A
C.A.R.B. E.O. Number: N/A
