Page 219 - 2018 Racecar Engineering Drag Racing Parts and Accessories Catalog

Nitro-Carb Steel Rocker Arms Gold Race Extruded Roller Rocker Arms
Rockers have 3 to 5 times more Aluminum roller rocker arms are made from
resistance to breakage than stock extruded billet aluminum for maximum strength.
rockers and eliminate pushrod cup Needle bearing fulcrums and roller tips reduce
and fulcrum failure. Accurate rocker friction and oil temperature while increasing RPM
ratios and long slot design make them and horsepower. Sold in sets of 16.
ideal for use with high lift camshafts. Stud
Part No. Description Ratio Stud Dia. Part No. Description Ratio Dia.
Small Block Chevy 265-400
CRN10800C-16* SB Chevy 305-350, 1988-99 1.5 3/8"
CRN11750-16 I 1955-87, Non-Self Aligning, Stock Ratio/Stud Dia. 1.5 3/8"
CRN11801C-16 † SB Chevy 262-400, 1955-87 1.5 3/8"
CRN11752-16 I 1955-87, Non-Self Aligning, Stock Ratio 1.5 7/16"
CRN11802C-16 † SB Chevy 262-400, 1955-87 1.6 3/8"
CRN11759-16 I 1955-87, Non-Self Aligning, Std. Stud Dia. 1.6 3/8"
† Non-self aligning rocker arms must be used with pushrod guideplates.
CRN11755-16 I 1955-87, Non-Self Aligning 1.6 7/16"
* For self-aligning applications only. Not for use with pushrod guide 1955-87 Non-Self Aligning,
plates, or with cylinder head casting that guides the pushrod, as severe CRN11771-16 Stock Ratio/Enlarged Stud 1.5 7/16"
pushrod wear will occur. Not for LS series engines.
1955-87, Non-Self Aligning,
CRN11772-16 L 1.6 7/16"
Increased Ratio/Enlarged Stud
Ductile Iron Adjustable Rocker Arms CRN10750-16 I 1988-99, Non-Self Aligning, Center Bolt Valve 1.5 3/8"
Much stronger than original equip- Covers
ment. Ideal in shaft mounted applica- CRN10759-16 I 1988-99, Non-Self Aligning, 1.6 3/8"
Center Bolt Valve Covers
tions where valve lash or lifter pre-load CRN10751-16 F 1988-99, Self Aligning, Center Bolt Valve Covers 1.5 3/8"
adjustment is necessary. Pushrods with CRN10758-16 F 1988-99, Self Aligning, Center Bolt Valve Covers 1.6 3/8"
cup on end to fit adjusting screw must Big Block Chevy 396-454
be used.
CRN13750-16 A 1965-90, Stock Ratio, Std. Stud Dia. 1.7 7/16"
Part No. Description Ratio 1965-90, “Wide Body” Severe Usage,
CRN64770-16 BB Chrysler 350-440 “B”, 1958-78, Std. Ratio 1.5 CRN13763TR-16 A Stock Ratio, Std. Stud 1.7 7/16"
CRN64771-16 BB Chrysler 350-440 “B”, 1958-78, Increased Ratio 1.6 CRN13755-16 A 1965-90, Increased Ratio, Std. Stud Dia. 1.8 7/16"
CRN69770-16 SB Chrysler 273-360 “LA”, 1964-91, Std. Cyl. Heads Only 1.5 Small Block Chrysler 318-360
CRN69771-16 SB Chrysler 273-360 “LA”, 1964-91, Std. Cyl. Heads Only 1.6 CRN11759-16 H 1992-00 “Magnum” 318 (5.2L) And 360 (5.9L) 1.6 3/8"
Small Block Ford 221-351W
CRN36750-16 C 1962-00, Stock Ratio, Std. Stud Dia. 1.6 3/8"
CRN36757-16 E 1962-00, Increased Ratio, Enlarged Stud Dia. 1.7 7/16"
CRN86757-16 A 1962-00, Stock Ratio, Enlarged Stud Dia. 1.6 7/16"
Ford 351C, 351M-400
CRN27750-16 J 1969-82, Stock Ratio, Std. “Boss” Stud Dia. 1.73 7/16"
Energizer Rocker Arms 1969-82, Stock Ratio,
Die formed aluminum bodies fitted with CRN27771-16 A Std. “Boss” Stud Dia., “Wide Body” 1.73 7/16"
needle bearing fulcrums and roller tips. Big Block Ford 429-460
Stud CRN27750-16 G 1968-97, Stock Ratio, Std. “Cobra Jet” Stud Dia. 1.73 7/16"
Part No. Description Ratio Dia. Pontiac 265-455
CRN11744-16 L SB Chevy 262-400, 1955-87 1.5 3/8" CRN28758-16 B 1955-81, Increased Ratio For 7/16" Straight Studs 1.6 7/16"
CRN11745-16 L SB Chevy 262-400, 1955-87 1.5 7/16" A: 1991-up Gen. V and VI engines require CRN99152-16 7/16" rocker arm
SB Chevy 262-400/ studs and pushrod guideplates.
CRN11746-16 L 1.6 3/8"
1962-00 SB Ford 221-351W, 1955-87 B: Must machine cyl. heads and install CRN99157-16 7/16" rocker arm
studs.
SB Chevy 262-400/
CRN11747-16 L 1.6 7/16" C: Must machine 1966-00 cyl. heads and install CRN99156-16 3/8" rocker
1962-00 SB Ford 221-351W, 1955-87 arm studs and CRN36650-1 pushrod guideplates or use CRN36655-16
BB Chevy 396-454/
CRN13744-16 M 1.7 7/16" conversion kit on 1977-00 pedestal mount cyl. heads.
1968-97 BB Ford 429-460, 1965-90
E: Must machine 1966-00 cyl. heads and install CRN99157-16 7/16"
CRN28747-16 N Pontiac 265-455, 1955-81 1.65 7/16" rocker arm studs and CRN36650-1 pushrod guideplates. Heat treated
CRN44746-16 SB Ford 221-351W, 1977-00, Pedestal Mount 1.7 5/16" pushrods required.
F: For use in self-aligning applications. Do not use with pushrod guide-
L: 1988-99 engines with self-aligning rocker arms require the installa- plates or with cyl. heads that guide the pushrods, as severe pushrod wear
tion of pushrod guideplates and appropriate heat treated pushrods. Valve will result. Not for use in LS1 type engines.
cover clearance must be checked. M: 1991 and later Gen. V and VI engines G: 1968-71 engine using bottleneck studs require CRN99159-16 straight
require the installation of CRN99152-16 7/16" rocker studs and factory 7/16" studs to allow valve adjustment, while 1972-97 engines can use
pushrod guideplates (under 480 PSI open seat pressure), or CRN99157-16 CRN35655-16 conversion kit for 3/8" pushrods.
7/16" rocker studs and CRN13650-1 pushrod guideplates (over 480 PSI H: Must use CRN36655-16 rocker arm stud conversion kit and CRN36668-
open seat pressure). N: Engines not equipped with 7/16" rocker studs 16 or CRN36621-16 pushrods. Stock valve covers must also be replaced
require cyl. head machining and CRN99157-16 rocker studs. or modified for clearance.
I: 1988-99 engines with self-aligning rocker arms require pushrod guide-
plates, CRN99160-16 rocker studs and appropriate heat treated pushrods.
J: Engines using pedestal mount rocker arms require CRN52655-16 con-
version kit for street applications.
K: Includes studs, guideplates and pushrods.
L: Clears 1.630" OD springs, “wide body” for severe usage.

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