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Looking for aftermarket parts to modify or upgrade your 1978 GMC C25 Suburban with rocker arms? At Tunersports.com we carry a huge selection of the top name brand performance rocker arm parts and accessories.
 OUT OF STOCK 1620-16Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity ... COMP Cams Rocker Arms CB 1.7 7/16 Ultra 1975-1978 GMC C25 Suburban Base / High Sierra / Sierra Classic / Sierra Grande $532.36 |
 OUT OF STOCK 1620-8Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity ... COMP Cams Rocker Arms CB 1.7 7/16 Ultra 1975-1978 GMC C25 Suburban Base / High Sierra / Sierra Classic / Sierra Grande $277.74 |
 OUT OF STOCK 1629-16Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity ... COMP Cams Rocker Arms348/409 Chevy 1.7 1975-1978 GMC C25 Suburban Base / High Sierra / Sierra Classic / Sierra Grande $534.28 |
 IN STOCK - DROPSHIPS 1629-8Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity ... COMP Cams Rocker Arms348/409 Chevy 1.7 1975-1978 GMC C25 Suburban Base / High Sierra / Sierra Classic / Sierra Grande $277.74 |
 OUT OF STOCK 19021-16The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature... COMP Cams Rocker Arms Ultra Gold Arc BB 1975-1978 GMC C25 Suburban Base / High Sierra / Sierra Classic / Sierra Grande $440.74 |
 IN STOCK - DROPSHIPS 1810-16The latest development in Rocker arm Technology from COMP Cams are Ultra Pro Magnumâ„¢ XD Rocker Arms built for 1/2" Studs to increase valve train stiffness and stability. Designed to be used in conjunction with the COMP Cams Hi-Tech 1/2" Rocker Stud Kit, the latest versions of COMP Cams Ultra P... COMP Cams Rockers CS 1.5 1/2in Ultra Pro 1978-1978 GMC C25 Suburban Base / High Sierra / Sierra Classic / Sierra Grande $644.91 |
 IN STOCK - DROPSHIPS 1620-1Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity ... COMP Cams Rocker Arm CB 1.7 7/16 Ultra 1975-1978 GMC C25 Suburban Base / High Sierra / Sierra Classic / Sierra Grande $58.52 |
 IN STOCK - DROPSHIPS 1629-1Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity ... COMP Cams Rocker Arm348/409 Chevy 1.7 U 1975-1978 GMC C25 Suburban Base / High Sierra / Sierra Classic / Sierra Grande $58.52 |
 IN STOCK - DROPSHIPS 17021-1These High Energyâ„¢ Die Cast Aluminum Roller Rocker Arms for Chevy V8 396-454 Applications are perfect for street and moderate Race use. With a 7/16" Stud diameter and 1.7 ratio, the die cast, larger-than-stock body of the Rocker arms is made of aluminum for superior strength with light overall... COMP Cams High Energy Alum Rocker BBC 1 1975-1978 GMC C25 Suburban Base / High Sierra / Sierra Classic / Sierra Grande $48.86 |
 IN STOCK - DROPSHIPS 19021-1The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature... COMP Cams Rocker Arm Ultra Gold Arc BBC 1975-1978 GMC C25 Suburban Base / High Sierra / Sierra Classic / Sierra Grande $52.72 |