power pkg kits superchargers crate engines carbs access fuel pumps gaskets ... suspension shocks qwikdata index ls1/ls2 348/409 chevy cylinder heads rpm ... xtreme for ls1/ls2 semi-cnc d · fits all 1997 and later ... gen iii iv ls series engines including 4.8l 5.3l 5.7l and 6.0l · ... for street legal status performer rpm ls semi-cnc heads for gen iii engines ... size intake port size valve sizes in/ex bare single complete single 65cc 212cc 2.02 ... cfm at 0.550 valve lift rpm xtreme for ls1/ls2 head #61949 stainless steel 2.02 1. ... -port raw heads also available for this engine see pages 163-165 348/409 w series ... chevy street high-performance available bare or assembled with high-quality ... 348/409 chevy · designed for 1961-1965 chevrolet w series 348/409 big-block engines · ...
power pkg kits superchargers crate engines carbs access fuel pumps gaskets ... professional cylinder head porter and engine builder · cast in the usa at the state- ... porter with cnc machining capability ls1 gen iii chevrolet rocker pads and ... inserts are supplied but not installed ls1 pro-port raw 15° valve angle a bare ... version of the edelbrock/lingenfelter ls1 head #61969 these heads fit 1997 later ... gm gen iii small-block engines from 4.8l to 6.0l #619969 includes ... valve guides only not installed ls1 pro-port raw chamber size a int port ... 1.02 2.08 1.64 61999 619969 stock ls1 location exhaust ports for ... ending in 69 for example #619869 ls1 pro-port raw head #61989 stock intake ... port location works with ls1 or ls6 intake manifolds victor jr ls series ...