ENGINE SECTION RED PART NUMBERS INDICATE NEW PARTS 6-40 1 2 3 4 5 6 7 8 9 10 11 CONTENTS REFERENCE GENERAL EXHAUST FUEL DRIVE TRAIN ENGINE WHEEL CONTROL FRONT END FRAME ELECTRICAL Moly Fits STD Displacement Compression Ratio Size Part # Part # Big Twin 74ci - 1200cc 8.5:1 (Std. Compression) STD Bore (3 7/16”) 62108 62156 Panhead/Shovelhead +.010” 62109 62151 +.020” 62110 62152 +.030” 62111 62153 +.040” 62112 62154 +.050” 62113 62155 +.060” 62114 62227 +.070” 62115 ----- Pistons • High quality cast Piston Kits that meet or exceed original equipment specifications. • Sold each with piston pin and lock rings. • Compression ratio listed with each piston below. • Low compression pistons enable the use of pump gas without detonation. • See 6-48/49 for piston ring sets. • Moly part numbers have molybdenum coated skirts to help prevent cylinder wall scuffing. CAST PISTON KITS FOR BIG TWIN 62108 62156 Moly Fits STD Displacement Compression Ratio Size Part # Part # Big Twin Shovelhead 80ci - 1340cc 8:1 (Std. Compression) STD Bore (3 1/2”) 62206 62162 +.010” 62207 62158 +.020” 62213 62159 +.030” 62214 62160 +.040” 62157 62161 +.050” 62215 62121 62206 62162 Moly Fits STD Displacement Compression Ratio Size Part # Part # Big Twin Evolution 80ci - 1340cc 8.5:1 (Std. Compression) STD Bore (3 1/2”) 62208 62172 1984/1999 +.005” 62209 62163 +.010” 62210 62168 +.020” 62211 62169 +.030” 62212 62170 +.040” 62178 62171 62208 62169 Continued On Next Page
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