Page 82 of 2009 Performance Parts by GM Parts Direct

chevy small-block v-8 valve springs and shims rocker arms a 12495490 rocker arm kit 1.5 ratio set of 16 · self-aligning,high-qualityrockershaveanominal1.5:1ratio · includes16stampedsteelrockerswithpivotballsandnuts · usep/n10089648forsingleservicepart;for3/8 studs note not recommended for mechanical lifter camshafts chevy small-block v-8 aluminum roller rocker arm 3/8 studs thesegmperformancepartsaluminumrollerrockerarms resembletheonesusedinthe1996corvettelt4engine,except thetrunnionshavebeenmachinedtofitearly-model3/8-inch rockerstuds.thearmsareself-aligningwithimprovedstiffness theywillaccommodateupto0.575 valvelift.theyareavailable in1.5:1and1.6:1ratios aluminum valve spring retainer titanium valve spring retainer 12370838 roller rocker arm set 1.5:1 ratio not shown rocker arm kit 1.5 ratio 10212809 lt4 valve spring shim not shown · ightweightshimsasusedon1996lt4corvettespecialltservice l headsp/n12363287 ,andfastburnheads · usewithspringp/n12551483 10241744 valve spring retainer not shown · usedon350ho,350ramjetandht383 a · setof16,3/8 stud1.5:1ratiorollerrockers · usep/n12367345forsingleservicepart 12370839 roller rocker arm set 1.6:1 ratio not shown · setof16,3/8 stud1.6:1ratiorollerrockers · usep/n12367346forsingleservicepart 12495493 valve spring retainer kit not shown · itof16p/n14003974capsasusedonzzz,zz1,zz2,350/300hp k and350/290hpengines · basecapsformostv-8andv-6engines · 1-13/32 diameterretainerforspringsp/n3911068 10185066 spring shim not shown · usedonzz3series350hoengines · spaceris1.35 o.d.x0.561 i.d.x.050 thick note when using a high lift camshaft check valve spring coil bind retainer-to-seal clearance and piston-to-valve clearance check for adequate pushrod clearance when using on cast-iron heads it may be necessary to remove valve cover drippers for proper rocker arm clearance note p/n 12370839 cannot be used on zz3 engines with orange valve springs 3731058 spring shim not shown · 55/64 i.d.x1-15/16 o.d.x0.030 thick 10045007 valve spring retainer not shown · forallzz3seriesengines note when converting zzz zz1 or zz2 engines to zz3 series cap valve spring shield must be removed and add cap p/n 10045007 seal p/n 460483 and spacer p/n 10185066 12367347 adjuster nut for roller rocker arm not shown 3875916 spring shim not shown · 55/64 i.d.x1-31/64 o.d.x0.015 thick · 3/8 adjustmentnut · usedonbothaluminumrockerarmkitsp/n12370838 andp/n12370839 12495492 lt4 valve spring cap kit not shown · kitfor5.7llt4engines · includes16p/n10212808lightweightretainers · usewithspringkitp/n12495494andkeykitp/n12495503 · usedonzz4,fastburn,lt4andironvortecbowtieheads roller rocker arm set 3891521 spring shim not shown · 55/64 i.d.x1-31/64 o.d.x0.065 thick 88961233 kool nut rocker arm kit not shown · specialrockerarmnutsareusedongmcircletrackengines · contains16pieces 460483 valve stem seal not shown · usedonallzzseries350hoengines · soldindividually;16requiredperengine 19169661 heavy duty vortec valve spring retainer not shown · fitsfastburnandvortecbowtiecylinderheads · designedforcircletrackracing b aluminum roller rocker arm 7/16 studs thesegmperformancepartscnc-machinedaluminumalloyroller rockerarmsarefor7/16 studs.extra-widebearingsandfulcrums improveloaddistributionandarelubricatedwithpressurized oil.therollertipaxleismadefrom4130steel.therollertipis machinedandgroundfrom8620steel.theyareavailablein1.5:1 and1.6:1ratios 10212810 lt4 valve stem seal not shown · sedonlt4headsandgmperformancepartsheadassemblies u p/n25534421,25534431,12363287and12464298 366254 titanium valve spring retainer · forvalvespringp/n366282 b 12361321 roller rocker arm set 1.5:1 ratio 12511890 valve stem seal kit not shown · late-modelv-8sealkitfor11/32 diametervalvestems · includeseightintakeseals,eightexhaustsealsand16oilstemseals 12495503 valve spring key kit not shown · kitincludes32keysofp/n24503856for11/32 valvestems · useonallsmall-blockv-8engines · setof16,7/16 stud1.5:1rollerrockerarms · usep/n12361328forsingleservicepart 12361322 roller rocker arm set 1.6:1 ratio not shown · setof16,7/16 stud1.6:1rollerrockerarms · usep/n12361329forsingleservicepart note check for seal-to-guide interference with high-lift cams note these aluminum rockers will not work with standard-height valve covers when using a high lift camshaft check valve spring coil bind retainer-to-seal clearance and piston-to-valve clearance check for adequate pushrod clearance when using on cast-iron heads it may be necessary to remove valve cover drippers for proper rocker arm clearance roller rocker arm top b roller rocker arm bottom b 160 buy online at www.gmperformanceparts.com available for purchase online at gmperformanceparts.com 161

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