Page 208 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

Related Components (Use With Cams On Previous Page)
Rocker Arms Retainers
Timing Push Valve Valve Lash Valve Stud
Lifters Set Ultra Pro Mag Ultra-Gold Rods Springs Steel Titanium Locks Caps Seals Girdles
BB Chrysler 361-440 Cu. In.
Custom
COM821-16 COM3125 COM1621-16 F — COM925-16 B COM741-16 COM732-16 COM627-16 C COM622-16 COM505-16 B —
Available
SB Ford 289-302 Cu. In.
COM833-16 E COM3120 COM1631-16 D COM19043-16 COM7929-16 COM985-16 B COM740-16 COM730-16 COM611-16 COM621-16 COM503-16 B COM4013 D
SB Ford 351 Cu. In.
COM731-16
COM838-16 G — COM1632-16 D COM19045-16 COM7965-16 COM944-16 B — COM611-16 COM621-16 COM503-16 B COM4014 D
COM720-16
COM731-16
COM838-16 G — COM1632-16 D COM19045-16 COM7965-16 COM944-16 B — COM611-16 COM621-16 COM503-16 B COM4014 D
COM720-16
BB Ford 429-460 Cu. In.
COM836-16 — COM1630-16 D — COM7934-16 COM959-16 B — COM739-16 COM611-16 COM621-16 COM503-16 B —
B: Requires machining on cylinder heads. E: Pre-1968 use COM831-16.
C: Special 10° locks, 1/2 2-groove, 1/2 4-groove, Single groove use COM612-16. F: Includes special shafts and spacers.
D: Requires screw-in studs and guide plates. G: Offset lifters available.

Ultra Pro Magnum XD Roller Rocker Arms Ultra-Gold Aluminum
The next design in the evolution of steel stud mount Roller Rocker Arms
rocker arms, Ultra Pro Magnum XD rockers offer CNC-machined aluminum roller rockers are rigid, pro-
increased strength and unsurpassed durability. Rocker vide sufficient clearance for 1.650" OD valve springs
arms are made of 8650 steel with super accurate ra- and can withstand extremely high spring pressures
tios, billet pushrod seat inserts, precision-sorted needle and lifts. Sold in sets of 16.
bearings and hardened roller tips. Compatible with most diameter valve Part No. Description Rocker Stud Rocker Ratio
springs and retainers. Covered by a lifetime guarantee against breakage. COM19001-16 1 SB Chevy 265-400 3/8" 1.5
Sold in sets of 16. COM19002-16 1 SB Chevy 265-400 3/8" 1.6
COM19004-16 1,2 SB Chevy 265-400 7/16" 1.5
Part No. Description Rocker Stud Rocker Ratio
COM19005-16 1,2 SB Chevy 265-400 7/16" 1.6
COM1801-16 SB Chevy 265-400 3/8" 1.5 3
COM19021-16 BB Chevy 396-454 7/16" 1.7
COM1804-16 SB Chevy 265-400 7/16" 1.5 COM19024-16 4 SB Chevy Gen. III LS Series 8mm 1.72
COM1805-16 SB Chevy 265-400 7/16" 1.6 COM19025-16 4 SB Chevy Gen. III LS Series 8mm 1.82
COM19043-16 SB Ford 289-351W 3/8" 1.6
COM1820-16 BB Chevy 396-454 7/16" 1.7
COM19044-16 2 SB Ford 289-351W 7/16" 1.6
COM1828-16 BB Chevy 396-454 7/16" 1.8 COM19045-16 Ford 351C 7/16" 1.73
COM1832-16 SB Ford 289-351W 7/16" 1.6 COM19060-16 Pontiac 265-455 7/16" 1.5
COM1834-16 SB Ford 289-351W 7/16" 1.7 1: Will not replace late model rail rocker.
2: Must use screw-in studs and guide plates.
COM1830-16 BB Ford 429-460, 351C 7/16" 1.73 3: Requires stud. #COM4514-16 to replace late model pedestal.
4: Includes pedestals and bolts.
Ultra Pro Magnum Shaft Rocker Arms
For Chrysler “A” and “B”/“RB” Engines Max-Lift BSR Shaft Rocker Systems For GM LS
Engineered to handle the rigors of aggressive cam lobes
and higher spring rates, Ultra Pro Magnum shaft rocker NEW!
systems are manufactured from SAE 8620 chrome moly Bolt-in, BSR
steel that has been heat treated for maximum durability. (Bushed Shaft
A unique oiling system provides lubrication to all critical Rocker) system increases valvetrain stiffness and dynamics, while reducing
components. deflection. Patent-pending system ties all eight rocker arms together and
Part No. Description Ratio fits in the stock rocker stand. Tri-layer bushings eliminates the high Hertz
COM1621-16 BB Chrysler 383-440, Bolts, Spacers And Shafts 1.5 loading common to needle bearing trunnions for increased durability.
COM1622-16 SB Chrysler 273-360, Spacers And Shafts 1.5
System additionally allows the use of higher lift, more aggressive camshaft
profiles. Each kit includes (16) rocker arms, (2) rocker shafts, and neces-
sary hardware.
Part No. Application
COM1981-16 GM LS1
COM1982-16 GM LS3
COM1983-16 GM LS7

207