2011 - Crane Cams

Rocker Arms, Steel & Ductile Iron
Application Ratio Stud Dia. Part No.
Oldsmobile V-8 67-84, 260-307-350-400-403-425-455 Die-Formed Steel
Stock ratio, rocker arms supplied with individual fulcrums, bridge straps, and secured with bolt. 1.61 Bridge 80800-16
Pontiac V-8 67-81, 265-287-301-316-326-347-350-370-389-400-421-428-455 Die-Formed Steel
Stock ratio, for use with bottleneck studs with 7/16” bottom and 3/8” top, includes spacer washers and 3/8” nuts. 1.50 7/16” BN 28800-16
Nitro-Carb Steel Rockers
For Race Use where Rules Require Stock Type Rockers
Crane Cams Nitro-Carb rockers offer 3 to 5 times greater resistance to wear,
fatigue and fracture in high-stress areas. Available exclusively from Crane Cams,
Nitro-Carb rockers eliminate pushrod cup and fulcrum failures with wear resistance
and surface hardness properties that are similar to ceramics.
Nitro-Carb rockers deliver the most accurate ratios of any similar steel rockers.
Nitro-Carb rockers are precision die-formed from heat treated steel. Most feature
a long-slot design, and come complete with oil-groove pivot balls and adjusting
nuts at no extra charge.
Crane Cams Nitro-Carb rockers are perfect for high valve spring pressure. Testing
in-lab and on-track, (using Crane 99846-16, XHTCS Tool Steel, stock diameter,
1.255” o.d. valve springs, 115 lb. seat, 350 lbs. open pressure) showed Crane Nitro-
Carb rockers to be failure-free after enduring millions of running cycles.
Nitro-Carb rockers should be used anywhere rules require “stock type steel rockers”.
This includes NHRA Stock and IHRA Pure Stock Class drag racing applications
plus oval track categories where stock-type rockers are required.
Application Part No.
Chevrolet 90° V-6 78-87, 200 thru 262
1.5 ratio, extra long slot, 3/8” stud 11801C-1 c,d
1.6 ratio, extra long slot, 3/8” stud 11802C-1 c,d
Chevrolet V-8 55-87, 262 thru 400
1.5 ratio, extra long slot, 3/8” stud 11801C-16 c
1.6 ratio, extra long slot, 3/8” stud 11802C-16 c
Chevrolet V-8 88-99, 305 thru 350
1.5 ratio, self aligning, 3/8” stud 10800C-16 e
Chevrolet V-8 65-90, 396 thru 454
1.7 ratio, long slot, 7/16” stud 13801C-16 f
a 1991-00 454-502 Gen V and VI hydraulic cam engines require the installation of 99152-16 7/16”
rocker arm studs and factory pushrod guideplates (no machining required). Mechanical camshaft
equipped engines require the installation of 99157-16 7/16” rocker arm studs and 13650-1
pushrod guideplates (machining required).
b On 68-71 engines equipped with bottleneck studs, using 99768-16 positive locking nuts will
permit valve adjustment. The 72-97 engines equipped with pedestal mount rocker arms can use
our 36655-16 Conversion Kit for 3/8” pushrods (no machining required) for street applications.
•3 To 5 Times Stronger Than Stock-Type Steel Rockers
• Precision Die-Formed Steel
• Most Ratio-Accurate Available
• Small & Big-Block Chevy Applications
*This product is applicable only to pre-1966 California and pre-1968 federally certified passenger cars. It is also applicable to non-emission controlled trucks and similar vehicles. It is not applicable or intended for use on any
emission controlled vehicles operated on highways or roads.
c Non-self aligning, must be used with pushrod guideplate cylinder heads.
d Order in quantity of 12.
e For self-aligning applications only. Not for use with pushrod guideplates, or with cylinder head
castings that guide the pushrod, as severe pushrod wear will occur. Not for LS1 series engines.
f 1992-00 Gen V and VI 454-502 engines require the installation of 99152-16 7/16” rocker arm studs
(no machining required) and factory pushrod guideplates.
866-388-5120 • 386-236-9983 FAX 313