10577115-Pan/Shovel Rear, Pan/Shovel bolt pattern, Standard Big Bore, Assembled Print
10577115
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10577115b
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start stop bwd fwd

Pan/Shovel Casting, Pan/Shovel bolt pattern, dual spark plug, external/internal oiling, standard big bore, 1 9/16 band intake, Fits stock OE 1-bolt Shovel or STD 3-bolt style exhaust pipe, Hemi, seats installed, Assembled rear  head with nitride Harley replacement (#18082-57) 1.750" exhaust and (#18074-66) 1.940" intake valves. Valve spring kit stock to .495 lift.