Page 4 of Heads 2008 by Edelbrock

power pkg kits superchargers crate engines carbs access fuel pumps gaskets install items manifolds efi heads cams access nitrous water pumps access exhaust suspension shocks qwikdata index small-block chevy cylinder heads s/b chevy street legal street high-performance performer and performer rpm s/b chevy · designed for 302 327 350 and 400 c.i.d engines up to 1986 · heads with 64cc combustion chambers improve performance and retain stock compression ratio on 1970 and earlier small-blocks street legal performer heads chamber size intake port size valve sizes in/ex bare single complete single 70cc 170cc 2.02 1.60 60659 60759 64cc 170cc 2.02 1.60 n/a 60909 note when using hot air choke carbs performer manifold with above heads choke kit #1932 is required performer rpm with angled plugs 70cc 170cc 2.02 1.60 60619 60719 64cc 170cc 2.02 1.60 60949 60999 performer rpm with straight plugs 70cc 170cc 2.02 1.60 60639 60739 64cc 170cc 2.02 1.60 60889 60899 polished performer rpm with angled plugs 70cc 170cc 2.02 1.60 n/a 607119 polished performer rpm with straight plugs 70cc 170cc 2.02 1.60 n/a 607319 64cc 170cc 2.02 1.60 n/a 608919 note see chart on pages 168-169 for specs for all heads use edelbrock head gasket sets on page 48 performer rpm chevy heads available with angled plugs or straight plugs performer and performer rpm chevy heads available with 64cc or 70cc combustion chambers performer and performer rpm s/b chevy heads are available bare or assembled with high-quality components complete heads include larger-than-stock 1.46 valve springs to handle most high-lift cams rocker stud exhaust bolt holes are heli-coiledtm for strength cnc port matched intake and exhaust ports for optimum flow and maximum power performer heads have an exhaust crossover passage for emissions legality performer s/b chevy head #60759 ports are sized to match the operating range of your engine stock location ports for compatibility with standard manifolds and headers performer centerbolt · designed for 1987-95 chevy 5.7l engines originally equipped with centerbolt valve covers except corvettes see performer centerbolt for corvette on next page · 1987-95 intake manifold bolt pattern · high-velocity intake runner works with either t.b.i or tuned port injection systems · maintains stock compression ratio when used with the recommended head gasket · accepts edelbrock elite series aluminum valve covers #4246 4247 stock centerbolt or new victor series valve covers #41733 performer centerbolt head #60859 street legal performer centerbolt chamber size intake port size valve sizes in/ex bare single complete single 60cc 165cc 2.02 1.60 60849 60859 important notes · bare heads will have valve guides and seats installed but will require final sizing and a valve job to match the valves you will be using · to use stock rockers on small-block chevy heads .100 longer than stock pushrods are required edelbrock pushrods #9629 recommended · use head bolt kits on pg 166 for easy installation · recommended spark plugs for most street applications are champion rc12yc · s/b chevy heads may not be used on engines with less than 4 bore 262 265 283 305 307 c.i.d except with cams having less than .450 valve lift performer centerbolt head retains the stock exhaust bolt pattern not legal for sale or use on pollution controlled motor vehicles www.edelbrock.com 143

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