Ultra Pro Magnum™

Investment cast 8650 chromemoly body and arched, web-like design increase strength and rigidity while reducing moment of inertia
Unique black oxide exterior finish helps prevent corrosion, thus increasing durability
Optimized retainer and valve spring clearances allow use of most diameter springs, retainers and +.050" locks without clearance or fitment issues
Feature oversized trunions, precision-sorted needle bearings and hardened roller tips

The new Ultra Pro Magnum™ 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 modern arched, web-like design delivers increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance.

Part #	Description	Ratio	Stud Dia.
Chevrolet
1601-12	V6 200-262	1.52	3/8"
1601-16	V8 265-400	1.52	3/8"
1602-12	V6 200-262	1.6	3/8"
1602-16	V8 265-400	1.6	3/8"
1604-12	V6 200-262	1.52	7/16"
1604-16	V8 265-400	1.52	7/16"
1605-12	V6 200-262	1.6	7/16"
1605-16	V8 265-400	1.6	7/16"
1607-8	V8 265-400 Twisted Wedge Head, Intake Valve	1.52	3/8"
1609-8	V8 265-400 Twisted Wedge Head, Intake Valve	1.6	3/8"
1608-8	V8 265-400 Twisted Wedge Head, Intake Valve	1.52	7/16"
1610-8	V8 265-400 Twisted Wedge Head, Intake Valve	1.6	7/16"
1617-12	V6 1988 & Later w/ Self Aligning Rockers	1.52	3/8"
1617-16	V8 1988 & Later w/ Self Aligning Rockers	1.52	3/8"
1618-12	V6 1988 & Later w/ Self Aligning Rockers	1.6	3/8"
1618-16	V8 1988 & Later w/ Self Aligning Rockers	1.6	3/8"
1620-16	V8 396-454	1.7	7/16"
1629-16	V8 348-409	1.7	3/8"
GM LS
1675-16	LS1/LS6	1.8	3/8"
1676-16	LS3 (Factory Offset)	1.8	3/8"
Ford
1619-12	V6 3.8L	1.7	3/8"
1630-16	V8 Boss 302, 351C, 429-460	1.7	7/16"
1631-16	V8 289-302-351W	1.6	3/8"
1632-16	V8 289-302-351W	1.6	7/16"
1634-16	V8 Self Aligning Rockers	1.6	3/8"
Ford
1619-12	V6 3.8L	1.7	3/8"
1630-16	V8 Boss 302, 351C, 429-460	1.7	7/16"
1631-16	V8 289-302-351W	1.6	3/8"
1632-16	V8 289-302-351W	1.6	7/16"
1634-16	V8 Self Aligning Rockers	1.6	3/8"
Chrysler (Shaft Mount)
1622-16	V8 273-360 (Requires ball/ball pushrod)	1.5	Shaft
1621-16	V8 383-440 (Requires ball/ball pushrod)	1.5	Shaft

A. Requires ball/ball pushrod

*50-State legal for 1993 and older GM vehicles equipped with 200 c.i.d.
(4.2L) to 454 c.i.d. (7.4L) gasoline engines. C.A.R.B. E.O. #D-279-4.

COMP Cams® Steel Stud Mount Rockers

Ultra Pro Magnum™ XD

Machined billet pushrod seat insert for wide range of rocker ratios used in popular Chevy and Ford applications
8650 steel construction outlasts and outperforms other rockers in accuracy and strength
Precision-sorted needle bearings better distribute the load and reduce wear for a longer service life
Engineered for use in endurance, circle track and drag race applications with improved strength and durability

The next design evolution of the Hi-Tech™ Stainless Steel Roller Rocker Arms are built to outlast and outperform in accuracy and strength. The Ultra Pro Magnum™ XD Rocker Arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application from 1.5 to 1.73 in .5 increments for Chevy and 1.6 to 1.73 for various Ford applications is available. These XD rockers are fully rebuildable and boast precision-sorted needle bearings and hardened roller tips. And, they work with most diameter springs and retainers. The new XD design utilizes advanced FEA and CAD design and development to improve strength, stiffness and MOI optimization for drag and circle track applications.

LIFETIME GUARANTEE

Ultra Pro Magnum™ XD Rocker Arms are so strong that we guarantee the rocker bodies against breakage for life.

Part #	Description	Rocker Stud	Ratio	Notes
AMC
1832-16	V8 290-401	7/16"	1.6"	A
Chevrolet
1801-12	V6 200-262 90° 6 Cylinder	3/8"	1.5"	A
1801-16	V8 265-400 Small Block	3/8"	1.5"	-
1802-12	V6 200-262 90° 6 Cylinder	3/8"	1.6"	A
1802-16	V8 265-400 Small Block	3/8"	1.6"	-
1803-12	V6 200-262 90° 6 Cylinder	3/8"	1.65"	A
1803-16	V8 265-400 Small Block	3/8"	1.65"	-
1804-12	V6 200-262 90° 6 Cylinder	7/16"	1.5"	A
1804-16	V8 265-400 Small Block	7/16"	1.5"	A
1805-12	V6 200-262 90° 6 Cylinder	7/16"	1.6"	A
1805-16	V8 265-400 Small Block	7/16"	1.6"	A
1806-12	V6 200-262 90° 6 Cylinder	7/16"	1.65"	A
1806-16	V8 265-400 Small Block	7/16"	1.65"	A
1807-12	V6 200-262 90° 6 Cylinder	3/8"	1.55"	A
1807-16	V8 265-400 Small Block	3/8"	1.55"	A
1808-12	V6 200-262 90° 6 Cylinder	7/16"	1.55"	A
1808-16	V8 265-400 Small Block	7/16"	1.55"	A
1817-16	V8 265-400 Small Block	7/16"	1.7"	A
1820-16	V8 396-454 Big Block	7/16"	1.7"	A
1823-16	V8 396-454 Big Block	7/16"	1.73"	A
1826-16	V8 396-454 Big Block	7/16"	1.6"	A
Ford
1830-16	V8 Boss 302, 351 Cleveland, 429-460 Big Block	7/16"	1.73"	A
1831-16	V8 289-302-351 Windsor	3/8"	1.6"	-
1832-16	V8 289-302-351 Windsor	7/16"	1.6"	A
1833-16	V8 289-302-351 Windsor	3/8"	1.7"	-
1834-16	V8 289-302-351 Windsor	7/16"	1.7"	A

A. Must use screw in studs and guide plates

COMP Cams® Steel Stud Mount Rockers

Magnum

Ultimate street rocker arm designed with the serious performance enthusiast in mind
Made from 8620 chromemoly steel, a superior material that will not flex
15 to 30 horsepower increase over conventional rocker arms
Friction reducing roller tip, stiff design and precision ratios yield more effective valve lift
Perfect for use in any application with less than 350 lbs. open spring pressure

COMP Cams® Magnum Roller Rockers are the ultimate street rocker. That’s because they were designed with the serious performance enthusiast in mind. Friction-reducing roller tip design and superior ratio accuracy yield more effective valve lift. Magnum Roller Rocker Arms are built to help your engine make more power and last longer.

Part #	Description	Notes	Ratio	Stud Dia.
AMC
1442-16	V8 290-401	A	1.6	3/8"
Chevrolet
1412-16	V8 265-400	-	1.52	3/8"
1412-12	V6 200-262	-	1.52	3/8"
1413-12	V6 60° 173	-	1.52	10mm
1414-12	V6 60° 173	-	1.6	10mm
1416-16	V8 265-400	B	1.6	3/8"
1416-12	V6 200-262	-	1.6	3/8"
1411-16	V8 396-454	C	1.72	7/16"
1417-16	V8 265-400	D	1.52	3/8"
1418-16	V8 265-400	D	1.6	3/8"
1417-12	V6 200-262	D	1.52	3/8"
1418-12	V6 200-262	D	1.6	3/8"
Ford
1411-16	Boss 302, 351C-400M	A	1.72	7/16"
1431-16	V8 289-351W (Rail Type) 1968-89	E	1.6	3/8"
1450-16	V8 289-351W (Rail Type) 1968-89	E	1.7	3/8"
1442-16	V8 289-351W (Non Rail) 1961-67	F	1.6	3/8"
1411-16	V8 429-460	A	1.72	7/16"
Oldsmobile
1442-16	V8 260-455	G	1.6	3/8"
Pontiac
1451-16	V8 265-455	H	1.52	7/16"
1452-16	V8 265-455	H	1.65	7/16"

A. Must have screw-in studs and guide plate
B. May require machine work to the cylinder head
C. Use stud #4514-16 to replace late model pedestal
D. For use on 1987-later self aligning
E. For 1978-present with Part #4504-16 studs, not for use with guide plates
F. Also can be used on heads with guide plates
G. Other parts required
H. Includes 7/16" balls, 3/8" and 7/16" nuts

*50-State legal for 1993 and older GM vehicles equipped with 200 c.i.d.
(4.2L) to 454 c.i.d. (7.4L) gasoline engines. C.A.R.B. E.O. #D-279-4.

COMP Cams® Steel Stud Mount Rockers

High Energy™

Excellent replacement rockers for engine rebuilds with stock or High Energy™ Cams
Help to eliminate noise and slop associated with worn or high mileage stock rocker arms
Come with adjusting nuts and pivot balls where required for installation
Feature a long slot for compatibility with higher than stock lift camshafts
Nitrided rocker arms designed for higher spring pressures and hardened pushrods (see below for more information)

COMP Cams® High Energy™ Steel Stud Mount Rocker Arms help eliminate the noise and slop associated with older worn and high mileage stock rocker arms. With a long slot for higher than stock lift camshafts, these rocker arms are an excellent replacement choice for engine rebuilds using either stock or High Energy Chamshafts™.

Nitriding is also available for some High Energy™ Rockers to increase surface hardness for improved initial and long-term wear characteristics. The nitriding process increases hardness by causing an infusion of nitrogen molecules into the material’s surface. This improves both the lubricity and wear resistance of the material.

Part #	Description	Notes	Ratio	Stud Dia.
AMC
1210-16	1974-79	-	1.6	Pedestal
Chevrolet
1212-16	V8 265-400, V6 200-262	A	1.5	3/8"
1211-16	396-454, 1965-87	B	1.7	7/16"
1216-12	6 Cyl. 173-207, 1980-95	C	1.5	3/8"
1261-12	6 Cyl. 194-292, 1962-84	-	1.75	3/8"
Chrysler
1222-8	2.2, 1981-87	-	-	OHC
Ford
1232-16	351C-400M, 1970-87	-	1.73	Pedestal
1266-12	6 Cyl. 240-300, 1967-78	-	1.6	3/8"
1231-16	V8 289-351W, 1968-77	D	1.6	3/8"
1232-16	V8 429-460, 1968-86	-	1.73	Pedestal
1235-16	351W	-	1.6	Pedestal
1270-8	2300cc 4 Cyl.	-	-	OHC
Oldsmobile
1242-16	260-455, 1967-79	-	1.6	Pedestal
Pontiac
1251-16	V8 265-455, 1967-79	-	1.5	7/16"
Chevrolet (Nitrided)
1217-16	V8 265-400, V6 200-262	-	1.5	3/8"
1218-16	V8 265-400, V6 200-262	-	1.6	3/8"
1219-16	396-454, 1965-87	-	1.7	7/16"
1220-16	V8 265-400		1.5	7/16"

A. Will not replace "late model" rail rocker
B. Will not replace "late model" pedestal rocker
C. Will work in some 4 cyl. applications also
D. Rail-type rocker arm