Page 10 of Valvetrain and Timing 2008 by Parts Pro

rocker arms accessories crane cams was founded in 1953 by harvey j crane jr when he became interested in hopping-up the flathead ford v-8 engine in his own car today over fifty years later crane is the one camshaft and valvetrain company that produces every camshaft in-house crane s commitment to quality control and engineering excellence is reflected in their innovative cam profiles world famous rocker arms and valvetrain components gold race extruded aluminum roller rocker arms crane aluminum rockers have been used in street machines street rods and tow vehicles delivering high mileage and trouble-free operation an added advantage for street operation is the friction reducing roller tip and roller bearing fulcrum as well as the unique inertia-lock locking nut that holds valve spacing longer than stock-type rockers sold individually or in sets description part no chevy sb 1.60 ratio 7/16 stud increased ratio w/enlarged stud dia clears 1.630 od spring v8 55-87 262-400 stock ratio with standard stud diameter v8 55-87 262-400 stock ratio with enlarged stud diameter chevy bb 396-502 1.70 ratio 7/16 stud stock ratio standard stud diameter chevy bb 396-502 91-00 454-502 gen v vi 1.80 ratio 7/16 stud increased ratio standard stud dia ford sb v8 s 62-94 221-302 351w 1.60 ratio 3/8 stud stock ratio standard stud diameter ford v8 s 69-82 351c 351m 400 boss 302 351 bb 68-93 370-460 1.73 ratio 7/16 stud stock ratio standard boss stud diameter 11755-16 11750-16 11752-16 13750-16 13755-16 36750-16 27750-16 quick-train valve train stabilizer stud gridles crane cams quick lock valve train stabilizers are a unique approach to the now common use of stud girdles for racing engine applications most importantly the crane quick-lock unit slashes the time required for removal and replacement of the stabilizer unit to a fraction of the time other units require crane vts bars are made from finest quality aluminum bar stock machined to precise blueprint specifications and attractively gold anodized for corrosion resistance each crane vts comes complete with all necessary hardware including heat treated steel rocker arm adjusting nuts they are easily installed and require no cylinder head machining or modifications for installation description part no chevy v8 262-400 pontiac-brodix w/standard rocker arm stud spacing for 3/8 rocker arm studs 99803 nuts included 11600-1 for .600 wide top slot rocker arms 7/16 rocker arm studs 99810 exhaust nuts included 11604-1 chevy v8 396-454 for .600 wide top slot rocker arms 99809 intake 99810 exhaust nuts included 13602-1 long slot stamped rockers sportsman series shaft-mount roller rockers · increases horsepower torque rpm and throttle response · roller tip for accurate valve stem tip tracking · machined steel valve lash adjusters · cnc-machined extruded billet heat-treated gold anodized aluminum main body · machined steel mikronite processed main shafts · each shaft end supported by steel stands · stock oiling for maximum lubrication · comes as complete kit includes shafts for easy bolt-on installation part no 44808-1 ford v-8 289-302-351w stud mounted rocker arm cylinder heads complete kit with 1.6 intake and 1.6 exhaust ratio rocker arms including all mounting hardware part no 11809-1 sb chevy complete kit with 1.6 intake and 1.85 exhaust ratio rocker arms including all mounting hardware stock design with better material and heat treat supplied with long slot or extra long slot to provide more travel for increased valve lift economically priced for budget engine rebuild stock design uses ball or sled type fulcrum with high amount of friction roller tip helps to eliminate friction and side loading of valve stem extra long slot accommodates increased valve lift highly accurate modern manufacturing techniques insure correct rocker ratio made from stronger alloy with improved heat treat most economically priced roller tip rocker on the market still relies on a ball fulcrum which creates high friction applications listed not for use with valve springs over 1.520 o.d nitro carb rockers nitro-carb rockers eliminate pushrod cup and fulcrum failures with wear resistance and surface hardness properties that are similar to ceramics these rocker are 3 to 5 times stronger than stock-type rockers precision die-formed steel tooled to extremely accurate ratios legal for race use where rules require stock type rockers description long slot nitro carb chevy 90° v6 78-87 200-262 chevy v8 55-87 262-400 stock ratio w/extra long slot 11801-16 increased ratio with extra long slot 11802-16 8 ea of 1.50 and 1.60 ratio w/extra long slot includes kool nuts 11803-16 chevy 305 and 350 88-99 stock ratio w/extra long slot self-aligning 3/8 stud chevy v8 65-90 396-454 502 stock ratio with extra long slot 13801-16 for this application only available in nitro carb version 11801c-16 11802c-16 rocker arm adjusting nuts .550 minimum rocker slot width description 3/8 -24 thread 7/16 -20 thread 10800c-16 13801c-16 part no 99788-16 99790-16 some parts are not legal for sale or use in california on any pollution controlled motor vehicle 137

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