Page 24 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 pro-port raw cylinder heads pro-porttm raw semi-finished heads designed especially for the professional head porter · unported versions of race-winning edelbrock victor series cnc heads for the professional cylinder head porter and engine builder · cast in the usa at the state-of-the-art edelbrock foundry with extra-thick walls to allow for custom cnc porting · in most cases seats and manganese-bronze valve guides are included not installed · please note these heads can not be used without professional head preparation · all edelbrock aluminum cylinder heads are superior in quality over other brands pro-porttm raw heads are for the professional cylinder head porter with cnc machining capability ls1 gen iii chevrolet rocker pads and exhaust bolt holes are heli-coiledtm for maximum strength inserts are supplied but not installed ls1 pro-port raw 15° valve angle a bare unported 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 dim b exh port dim b valve sizes in/ex c part no single hip d 38cc 0.82 x 2.80 1.41 x 1.02 2.08 1.64 61989 619869 38cc 0.82 x 2.80 1.41 x 1.02 2.08 1.64 61999 619969 stock ls1 location exhaust ports for compatibility with exhaust manifolds or headers angled plugs for maximum performance high-tech process delivers stronger castings edelbrock has now raised the bar in race head quality using a technique called hot isostatic pressing hip this aerospace process takes raw castings up to 900° f in a pressurized chamber up to 30,000 psi literally squeezing the air out of the casting the results an incredibly strong super dense sand casting that has three times the fatigue life and nearly the consistency of billet aluminum heads that are hiped have a 6-digit part number 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 for gm gen iii-iv ls series engines gms new l92 and ls7 engines are at the peak of the gen iii pyramid with raised ports and offset rockers and our new victor jr ls7 pro-port raw head puts these advance characteristics into the hands of professional cylinder head specialists it has 12.27° valve angles and includes both the l92 and ls7 intake bolt patterns with an intake port that is small enough to be ported for either intake manifold they accept stock 1.8:1 ls-7 rocker arms and 0.200 longer-than-stock valves or the spring seats can be sunk for stock valves if desired seats and guides are included but not installed victor jr ls series pro-port raw 770169 victor 23° high-port #77559 has .200 raised intake runners same casting used for victor cnc heads small-block chevrolet victor 23° pro-port raw high-port approved for nascar touring classes chamber size a int port dim b exh port dim b valve sizes in/ex c part no single hip d victor 18° #775169 has raised intake runners and 18° valve angles same casting used for victor 18° cnc notes a unfinished size b dimensions at port entry/exit c maximum size each valve may not be used together not legal for sale or use on pollution controlled motor vehicles 48cc 1.17 x 1.87 1.34 x 1.16 2.24 1.64 77559 n/a victor 18° pro-port raw 42cc 1.17 x 1.77 1.50 x 1.33 2.24 1.65 77509 775069 52cc 1.16 x 1.79 1.50 x 1.33 2.24 1.65 77519 775169 victor 18° pro-port raw with seats .100 closer to deck no seats guides 36cc 1.18 x 1.77 1.50 x 1.34 2.24 1.65 77539 775369 victor 15° pro-port raw 32cc 1.17 x 1.80 1.50 x 1.32 2.24 1.65 77549 775469 www.edelbrock.com 163

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