SKU: 30224

BIG BORE 92CC PERFORMER RPM POWER PACKAGE This particular motor group consists of both 4" and 4-1/8" bore combinations. These big-bore kits should be purchased according to the desi#E5E5CC compression ratio chosen from our cubic inch/compression ratio chart. The kit includes heads, camshaft, adjustable pushrods, and all gaskets needed for the kit installation. For individual components, click here. Edelbrock CNC-ported cylinder heads with a 92cc combustion chamber Edelbrock Performer RPM camshaft #1749ah Gasket set #30216 (includes all gaskets needed for upgrade) Adjustable pushrod set #1737 118+ HP 113 FT/LBS. (A) COMPRESSION RATIO 10.3:1 Big Bore Performer RPM Package with natural finish heads #30224 Big Bore Performer RPM Package with polished finish heads #30225 ADD $300 FOR POLISHED HEADS. 4" BORE ENGINE SIZE 99cc HEADS 83cc HEADS STROKE 100" N/A 9.6:1 4" 107" 9.4:1 10.1:1 4-1/4" 113" 9.8:1 10.7:1 4-1/2" 4-1/8" BORE ENGINE SIZE 99cc HEADS 83cc HEADS STROKE 111" 9.6:1 10.4:1 4-1/8" 117" 10.1:1 N/A 4-3/8" 121" 10.3:1 N/A 4-1/2" 124" 10.6:1 N/A 4-5'8" These compression ratio numbers are calculated using the following data and may vary from those of the original engine manufacturer: .045" head gasket thickness -.006" piston deck height -2cc for piston valve reliefs This package must be used with an Edelbrock intake manifold, sold separately, to match your choice of carburetor, click here. Recommended spark plugs for these hdws are Champion RA8HC. all product is subject to availability; if your part is not available you will be immediately refunded SO BUY WITH CONFIDENCE AT BARNUMS!!! Recommended spark plugs for these heads are Champion RC12YC. EDELBROCK