Speedo Seats & Luggage- racks Frame Chassis Suspension Forktubes Wheels Brake Fenders Gastanks Motorparts Gaskets Intake Transmission & Driveline Exhaust Electrical & Lights Handlebars, Cables & Mirrors Oil tanks Oil & Chemicals Fasteners Windshields Forward controls, Footpegs Miscellaneous MOTOR PARTS - LOWER END 10 616 NEW PRODUCTS ADDED WEEKLY AT / MOTORCYCLESTOREHOUSE.COM I need a cam for my Shovelhead. How do I quickly determine if I need an 70-E77 or a L7784 model cam? - Measure the outer diameter of the cam gear on the camshaft that is to be replaced. The 70-E77 cam will measure approx. 70mm The L77-84 cam will measure approx. 69mm These cams are not interchangeable. tech-tip 62 ANDREWS J / .405" LIFT Mild street cam. Smooth idle, more power throughout RPM range. Installs with no headwork. Gives .425" valve lift on Panhead, .405" on Shovelhead. 503390 48-69 Pan, Shovel 503395 70-E77 Shovel 503400 L77-84 Shovel ANDREWS F / .450" LIFT Basicly an 'A' grind cam, but with delayed timing to help eliminate 'pinging'. More power than stock cam. Should install with no headwork (excl. 80-81 models). Gives .470" valve lift on Panhead, .450" on Shovelhead. 503420 48-69 Pan, Shovel 503425 70-E77 Shovel 503430 L77-84 Shovel ANDREWS A2 / .450" LIFT Street. More midrange and top end power, smooth idle. Should install with no headwork (excl. 80-81 models). Gives .470" valve lift on Panhead, .450" on Shovelhead. 503435 48-69 Pan, Shovel 503440 70-E77 Shovel 503445 L77-84 Shovel ANDREWS AB / .450" LIFT Street. This is the A cam with the longer exhaust duration of the Andrews B. Improved high end performance and reduced oil temperature in hot weather. Should install with no headwork (excl. 80-81 models). Gives .470" valve lift on Panhead, .450" on Shovelhead. 504319 48-69 Pan, Shovel 504320 70-E77 Shovel 508695 L77-84 Shovel ANDREWS BH / .450" LIFT Hydraulic version of the Andrews B2 cam. Will allow use of stock hydraulic units. Gives .470" valve lift on Panhead, .450" on Shovelhead. 507280 48-69 Pan, Shovel 507285 70-E77 Shovel 507290 L77-84 Shovel ANDREWS B2 / .485" LIFT Hot street. Much more midrange and top end power. Smooth idle. Good choice for modified motors and small strokers. Solid lifters recommended, spring spacing required. Gives .507" valve lift on Panhead, .485" on Shovelhead. 503450 48-69 Pan, Shovel 503455 70-E77 Shovel 503460 L77-84 Shovel ANDREWS 7 / .510" LIFT Street/Drags. Hotter version of the Andrews B2 cam. Pulls strong from 2500-6500 RPM. Good street cam for 84"-88" motors. Solid lifters recommended. Gives .535" valve lift on Panhead, .510" on Shovelhead. 503469 48-69 Pan, Shovel 503470 70-E77 Shovel 503475 L77-84 Shovel ANDREWS C / .525" LIFT Street/drags. Best production cam design for big street engines. Strokers from 84"-96". Broad torque range pulls from 2500-7000+. Solid lifters recommended. Gives .550" valve lift on Panhead, .525" on Shovelhead. 503480 48-69 Pan, Shovel 503485 70-E77 Shovel 503490 L77-84 Shovel ANDREWS 2 / .490 LIFT (LOW C.R.) The low compression version of the Andrews B cam. High lift combined with short duration will improve performance on low compression engines (8:1 C.R. or less). Gives .512" valve lift on Panhead, .490" on Shovelhead. 511095 48-69 Pan, Shovel 503515 70-E77 Shovel 503520 L77-84 Shovel ANDREWS 1 / .427 LIFT (LOW C.R.) The low compression version of the 'A' cam. To be used on engines that have low compression (1:8 C.R. or less) pistons installed. The reduced duration improves performance. Gives .450" valve lift on Panhead, .427" on Shovelhead. 503495 48-69 Pan, Shovel 503500 70-E77 Shovel 503505 L77-84 Shovel SHOVEL & PANHEAD ANDREWS CAMSHAFT SPECIFICATION CHART Intake° Exhaust° Duration° Valve Lift Valve Lift Valve Lift TDC Open/Close Open/Close In/Ex In/Ex (Shovel) In/Ex (Panhead) In/Ex 1 16/36 36/16 232/232 .427" .450" .098"/.098" 2 15/35 35/15 230/230 .490" .512" .098"/.098" J 21/41 41/21 242/242 .405" .425" .154"/.154" F 16/48 48/16 244/244 .450" .470" .137"/.137" A2 19/43 50/18 242/248 .450" .470" .156"/.142" AB 21/43 50/26 244/256 .450" .470" .156"/.170" B2 26/50 53/25 256/258 .485" .507" .187"/.176" BH 24/52 52/24 256/256 .450" .470" .156"/156" 7 29/53 59/27 262/266 .510" .535" .206"/.186" C 37/61 61/37 278/278 .525" .550" .234"/.234" Timing and duration measured at zero lash and .053" tappet lift off base circle. Note that TDC valve lifts are listed for Shovel. Actual Panhead TDC valve lifts will approximately be 5% higher than Shovel due to the different Panhead rockerarm geometry. To avoid coil bind, allow min. .030" more free valve travel than the max. valve lift that is mentioned. To achieve adequate valve spring clearance, several higher lift top collars are available which require no machining. LOW COMPRESSION CAMS REGULAR CAMS 48-84 PAN & SHOVEL CAMS
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