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 - TOP END 10 695 AFTERMARKET PARTS & ACCESSORIES FOR CUSTOM MOTORCYCLES / MOTORCYCLESTOREHOUSE.COM SHOVEL CYLINDER HEADS S&S, SHOVELHEAD HEADS Stock style, bolt-on, replacement cylinder heads from S&S for 66-84 Shovelhead models. S&S heads are designed as stock replacement. Still, where stock heads flow about 124 cfm @ 10", S&S heads do improve these figures somewhat and typically flow around 135 cfm @ 10". Heads come assembled with valves, springs, collars, valve guide seals, rocker cover and exhaust mount hardware etc. (excl. rocker arms and covers) and complete with cylinder head, rocker cover and exhaust gaskets. These heads are ready to run and will accept camshafts with a lift of up to .590". Sold in pairs and available for the 66-78 style O-Ring & 79-84 style Band Type manifolds. 66-78 O-ring Alu Black 512371 512741 Stock bore 512372 -- 3-5/8" Big Bore 79-84 Band type Alu Black 512737 512738 Stock bore 512743 -- 3-5/8" Big Bore Replacement parts Stock S&S replacement parts for S&S .550" lift (early models, with alu top collars) Shovelhead heads. Later heads (production date after Nov. 2000) come with a .590" lift spring kit. For lower collars, intake valves, keys and seals you can use stock replacement Shovelhead parts from another manufacturer like KPMI, Manley and such. Dimensions of these parts are identical to stock. Exhaust valves are .030" smaller in diameter which allows higher TDC lifts and improves flow. 900258 Spring kit .590" lift. L81-84 B.T. and all S&S Shovel cylinder heads 951084 Inner valve spring (.550" lift) 951085 Outer valve spring (.550" lift) 951086 Upper spring collar. (.550" lift) Aluminum 951089 Valve key, S&S. Repl. 18228-36 951090 Intake valve, S&S. 1.950". Repl. 18075-80/81 951091 Exhaust valve, S&S 1.720" dia. (OEM = 1.750") 512371 512757 PANHEAD CONVERSION FOR SHOVELHEADS S&S, PANHEAD RETRO CONVERSION KIT FOR SHOVEL Cylinder head conversion kit for 66-84 Shovelheads. This are Panhead look alike heads, as used by S&S on their P-series engines. These are actually S&S Shovelhead based heads with just a Panhead rocker cover so the whole set-up is basically identical as would be done with S&S Shovelhead heads. The valve train drive technique is based on the Evo Big Twin, so Evo hydraulic units, Evo billet tappet guides, Quickee pushrods with through the pushrod top end oiling, specialty P-Series rocker shafts, rocker cradle and S&S Shovel roller rocker arms are used. Will fit Shovelhead cylinders since the stock Shovel head bolt pattern and the stock Shovel style fire-ring is used. For intake stock Shovel O-ring style intake manifolds can be used. The exhaust mounting style is stock Shovelhead as well. Heads come complete with valves and a .590" lift valve spring kit installed. Kit comes complete as shown. Note: You may need to order separately one or more of the following parts: 1) 66-E78 O-ring style manifold 2) 70-E78 stock engines require a L78-87 style pinion gear since an Evo B.T. cam must be used 3) 84-99 Evo B.T. style camshaft. 4) 66-69 stock engines require a special generator style cam with 84-99 style lobes. 512757 Std bore 512758 3-5/8" bore
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