fuel pumps carbs access crate engines superchargers kits power pkg cylinder heads big-block ... chevy b/b chevy street legal street high-performance ... performer performer rpm 454-o · these oval port heads will support ... over 540 hp with 9.5:1 edelbrock b/b chevy heads fit compression when used as part ... weight performer and performer rpm 454-o heads feature 110cc combustion chambers ... streetable compression ratios performer 454-o chamber size intake port size valve ... 2.19 1.88 60469 60479 performer rpm 454-o chamber size intake port size valve ... .88 60449 60459 polished performer rpm 454-o 110cc 290cc 2.19 1.88 n/a 604519 ... performer rpm 454-o retains the stock exhaust bolt pattern ... exhaust manifolds or headers performer 454-o heads are street legal in all 50-states ...
power pkg kits superchargers crate engines carbs access fuel pumps ... shocks qwikdata index big-block chevy cylinder heads b/b chevy street legal ... -performance continued performer rpm 454-r · designed for street/high-performance ... and lighter valve weight performer rpm 454-r chamber size intake port size valve ... .88 60549 60559 polished performer rpm 454-r 118cc 315/300cc long/short 2.19 1.88 ... for all performer and performer rpm b/b chevy heads spark plug is closer to center of ... with most headers performer rpm 454-r #60559 has 118cc combustion chambers ... valves polished performer rpm b/b chevy head #605519 performer rpm 454-r #60559 ... b/b chevy marine marine-duty performer rpm 454-o ... and 454-r · heavy-duty 1.89 inconel exhaust ... and lighter valve weight performer rpm 454-o marine oval port chamber size intake ...