Page 205 - 2018 Racecar Engineering Drag Racing Parts and Accessories Catalog

Related Components (Use With Cams On Previous Page)
Rocker Arms Retainers
Timing Ultra Push Valve Valve Lash Valve Stud
Lifters Set Ultra Pro Mag 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
Custom
COM829-16 COM3125 — — COM943-16 B — COM731-16 COM627-16 C COM622-16 COM505-16 B —
Available
SB Ford 289-302 Cu. In.
B
COM833-16 E COM3120 COM1631-16 D COM19043-16 COM7929-16 COM985-16 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 SPR Radius Tip Rocker Arms For GM LS
Roller Rocker Arms A direct bolt-on to OEM trunnion stands for
The next design in the evolution of steel stud GM LS1 and LS3 engines, SPR rocker arms
mount rocker arms, Ultra Pro Magnum XD are manufactured from sculpted, thin-wall
rockers offer increased strength and unsur- cast steel that is 30% stiffer than OEM
passed durability. Rocker arms are made of units, while the centered, multi-radius
8650 steel with super accurate ratios, billet pushrod seat inserts, valve tip reduces sweep across the valve
precision-sorted needle bearings and hardened roller tips. Com- by 400%. State-of-the-art design offer three
patible with most diameter valve springs and retainers. Covered times less moment-of-inertia than leading alumi-
by a lifetime guarantee against breakage. Sold in sets of 16. num rocker arms. Offered with choice of bushed or
needle bearing trunnions, rocker arms are sold in sets of 16.
Rocker Rocker
Part No. Description Stud Ratio Rocker
COM1801-16 SB Chevy 265-400 3/8" 1.5 Part No. Description Ratio
COM1804-16 SB Chevy 265-400 7/16" 1.5 COM1975-16 LS1, Needle Bearing Trunnions 1.77
COM1805-16 SB Chevy 265-400 7/16" 1.6 COM1976-16 LS3, Needle Bearing Trunnions 1.77
COM1820-16 BB Chevy 396-454 7/16" 1.7 COM1977-16 LS1, Bushed Trunnions 1.77
COM1828-16 BB Chevy 396-454 7/16" 1.8 COM1978-16 LS3, Bushed Trunnions 1.77
COM1832-16 SB Ford 289-351W 7/16" 1.6
COM1834-16 SB Ford 289-351W 7/16" 1.7 Ultra Pro Magnum Shaft Rocker Arms For
COM1830-16 BB Ford 429-460, 351C 7/16" 1.73 Chrysler “A” and “B”/“RB” Engines
Engineered to handle the rigors of aggressive cam
Ultra-Gold Aluminum lobes and higher spring rates, Ultra Pro Magnum
Roller Rocker Arms shaft rocker systems are manufactured from SAE
CNC-machined aluminum roller rockers 8620 chrome moly steel that has been heat treated
are rigid, provide suffi cient clearance for for maximum durability. A unique oiling system pro-
1.650" OD valve springs and can withstand vides lubrication to all critical components.
extremely high spring pressures and lifts. Part No. Description Ratio
Sold in sets of 16. COM1621-16 BB Chrysler 383-440, Bolts, Spacers And Shafts 1.5
Rocker Rocker COM1622-16 SB Chrysler 273-360, Spacers And Shafts 1.5
Part No. Description Stud Ratio
COM19001-16 1 SB Chevy 265-400 3/8" 1.5
COM19002-16 1 SB Chevy 265-400 3/8" 1.6 Ultra-Gold Shaft Rocker Arms For
COM19004-16 1,2 SB Chevy 265-400 7/16" 1.5 Ford “FE” Engines COM19046
COM19005-16 1,2 SB Chevy 265-400 7/16" 1.6 Next generation, ARC (Arced,
COM19021-16 3 BB Chevy 396-454 7/16" 1.7
COM19024-16 4 SB Chevy Gen. III LS Series 8mm 1.72 Recessed And Contoured)
COM19025-16 4 SB Chevy Gen. III LS Series 8mm 1.82 series aluminum rocker arms
COM19043-16 SB Ford 289-351W 3/8" 1.6 provide increased horsepower,
COM19044-16 2 SB Ford 289-351W 7/16" 1.6 improved valvetrain stability
COM19045-16 Ford 351C 7/16" 1.73 and enhanced oiling, while
COM19060-16 Pontiac 265-455 7/16" 1.5
1: Will not replace late model rail rocker. fi tting under stock height valve covers. Rocker arms, which fi t all
2: Must use screw-in studs and guide plates. big block Ford “FE” engines, feature a 1.76:1 ratio and are sold in
3: Requires stud. #COM4514-16 to replace late model pedestal. set of 16, complete with shafts and necessary hardware.
4: Includes pedestals and bolts.

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