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Comp Cams - Shaft Rockers
Pro Magnum Rocker Arms

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

TECH TIP:
Rebuildable! Unlike aluminum rockers, this heavy-duty rocker can be rebuilt. We will disassemble and inspect it, then replace the roller tip, axle, trunion and bearings to make your rockers like new.
  Pro Magnum Roller Rockers
Ideally suited for serious street, bracket racing, super classes, and circle track racing. You won't find a better roller rocker for the price.

Unsurpassed Strength!
To ensure maximum durability under high-rpm operating conditions, Pro Magnum™ Roller Rockers are built entirely from 8650 chromemoly steel, a material three times as strong as the aluminum used in many competing rockers. Pro Magnums are so tough, in fact, that we offer an industry-leading lifetime warranty on the rocker bodies themselves. And because Pro Magnums are fully rebuildable, you may never have to buy another set of rockers again.

Less Weight Where It Counts!
Our engineers used advanced computer technology (including Finite Element Analysis) to refine the Pro Magnum™ Rocker. We added strength where it was needed and reduced mass in low stress areas. The result: Pro Magnum Rocker Arms™ have less weight (5%) at the valve than most aluminum rockers. This means more rpm and valve train stability.

Superior Design Equals Better Performance!
The unique design of the Pro Magnum™ Rocker enables us to use a larger trunion with more needle bearings. This spreads the load more evenly and the rocker will last longer. Other features include an integral pushrod seat that ensures accuracy and saves weight, and a unique rocker design also provides plenty of clearance for most high performance valve springs.
Part # Description Rocker
Stud
Ratio Price/
Set
Order
Online
1301-16 (C) Chevy V8 265-400 * 3/8" 1.52 $275 order here
1301-12 (B) Chevy V6 200-262 * 3/8" 1.52 $209 order here
1304-16 (B,C) Chevy V8 265-400 * 7/16" 1.52 $275 order here
1304-12 (B) Chevy V6 200-262 * 7/16" 1.52 $209 order here
1302-16 (C) Chevy V8 265-400 * 3/8" 1.6 $275 order here
1302-12 (B) Chevy V6 200-262 * 3/8" 1.6 $209 order here
1305-16 (B,C) Chevy V8 265-400 * 7/16" 1.6 $275 order here
1305-12 (B) Chevy V6 200-262 * 7/16" 1.6 $209 order here
1607-8 Chevy V8 265-400
Twisted wedge head, intake valve
3/8" 1.52 $179 order here
1308-8 Chevy V8 265-400
Twisted wedge head, intake valve
7/16" 1.52 $139 order here
1309-8 Chevy V8 265-400
Twisted wedge head, intake valve
3/8" 1.6 $139 order here
1310-8 Chevy V8 265-400
Twisted wedge head, intake valve
7/16" 1.6 $139 order here
1317-16 Chevy V8 1988+ up
with self aligning rockers
3/8" 1.52 $289 order here
1317-12 Chevy V6 262 1988 + up
with self aligning rockers
3/8" 1.52 $215 order here
1318-16 Chevy V8 1988 + up
with self aligning rockers
3/8" 1.6 $289 order here
1318-12 Chevy V6 262 1988 + up
with self aligning rockers
3/8" 1.6 $215 order here
1375-16 (E) GM Gen III LS1/LS6 Rocker Arms 3/8" 1.75 $369 order here
1370-16 (E) GM Gen III LS1/LS6 Rocker Arms 3/8" 1.85 $369 order here
1320-16 (A) Chevy V8 396-454 * 7/16" 1.7 $289 order here
1330-16 Ford V8 Boss 302, 351C, 429-460 7/16" 1.7 $289 order here
1334-16 Ford V8 Self Aligning Rockers 3/8" 1.6 $279 order here
1632-16 (B) Ford V8 289-302-351W 7/16" 1.6 $275 order here
1321-16 (D) Chrysler V8 383-440 * shaft 1.5 $509 order here
1322-16 (D) Chrysler V8 273-360 shaft 1.5 $469 order here
1077-2 Shafts for 1321 rockers n/a n/a $55 order here
1079-2 Shafts for 1321 rockers n/a n/a $55 order here
A. Will not replace late model pedestal rockers, see page 277 for stud conversions
B. Must use screw-in studs and guide plates
C. Will not replace late model rail rocker
D. Requires a ball/ball pushrod
E. Replacement components only, must be used with kit #16765-KIT & #13703-KIT, see page 171 for more information
F. Designed for stock and aftermarket heads without guide plates or that originally used pedestal-mount rockers
*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
 
 
 
 
 
 
 

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