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Engine cases are the foundation of your complete engine project and we offer the finest available in the industry. These case kits include: main bearings, cam bearing, installed chromoly cylinder studs, main seal, main seal spacer, chrome timing hole plug, case counterbores for socket head bolts, stainless socket head casebolts, alignment dowels for true line bore, top end feed screen with spring and the oil pressure gauge. These cases are cast from prime C356-T6 aluminum and are a professional engine builder’s choice for your next high performance engine. • All 5 PC fly wheel designs have their pinion race sized to 1.751” and utilize the ‘white’ pinion bearing.
Large bore breather for increased crank case vacuum and less blow by.
5 PC FLYWHEEL DESIGN
206-25 Stock bore case, Natural finish. 74 C.I. and 80 C.I. Uses 1984-1991 EVO oil pump.
206-29 Stock bore case, Black finish. 74 C.I. and 80 C.I. Uses 1984-1991 EVO oil pump.
206-30 Stock bore case, Polish finish. 74 C.I. and 80 C.I. Uses 1984-1991 EVO oil pump.
206-21 3.625” bore case, Natural finish. 96” big bore case uses 1992 & later oil pump.
206-22 3.625” bore case, Black finish. 96” big bore case uses 1992 & later oil pump.
206-23 3.625” bore case, Polish finish. 96” big bore case uses 1992 & later oil pump.
3 PC FLYWHEEL DESIGN
206-26 1992 & Later oil pump, 3.625” bore, Ultima® 96 C.I., Natural finish
206-27 1992 & Later oil pump, 3.625” bore, Ultima® 96 C.I., Black finish
206-28 1992 & Later oil pump, 3.625” bore, Ultima® 96 C.I., Polish finish
TWIN CAM A 99’-06’
Equiped with the Timken® sprocket shaft bearing (OEM 9028) and late model pinion bearing (OEM 24605-07).
Small Cam Bearing, (OEM #9198 bearing)
206-103 Ultima® standard bore, 4.065 spigot, Black finish (stock replacement)
206-104 Ultima® standard bore, 4.065 spigot, Silver finish (stock replacement)
Large Cam BEARING, (OEM #9215 bearing)
206-105 Ultima® standard bore, 4.065 spigot, Polish finish (Ultima® 100 C.I.)
206-106 Ultima® standard bore, 4.065 spigot, Black finish (Ultima® 100 C.I.)
206-107 Ultima® standard bore, 4.065 spigot, Silver finish (Ultima® 100 C.I.)
206-100 Ultima® 4.000 bore, 4.255 spigot, Black finish (Ultima® 113 C.I.)
206-101 Ultima® 4.000 bore, 4.255 spigot, Polish finish (Ultima® 113 C.I.)
206-102 Ultima® 4.000 bore, 4.255 spigot, Silver finish (Ultima® 113 C.I.)
206-108 Ultima® 4.125 bore, 4.320 spigot, Black finish (Ultima® 124 C.I.)
206-109 Ultima® 4.125 bore, 4.320 spigot, Polish finish (Ultima® 124 C.I.)
206-110 Ultima® 4.125 bore, 4.320 spigot, Silver finish (Ultima® 124 C.I.)
EVOLUTION STYLE ENGINE CASES 84'-99'
Machined for both bottom, case, and top, cylinder head, breathing systems.
5 PC FLYWHEEL DESIGN
206-54 1984 Thru 1991, 3.500” bore Natural finish.
206-55 1984 Thru 1991, 3.500” bore Black finish.
206-52 1984 Thru 1991, 3.625” bore Natural finish case kit.
206-53 1984 Thru 1991, 3.625” bore Black finish.
206-56 1992 & Later, 3.500” bore Natural finish.
206-57 1992 & Later, 3.500” bore Black finish.
206-50 1992 & Later, 3.625” bore Natural finish.
206-51 1992 & Later, 3.625” bore Black finish.
206-40 FatsoTM Gen I case, Twin Cam® top Evo lower, Natural finish.
206-41 FatsoTM Gen I case, Twin Cam® top Evo lower, Black finish.
206-42 1992 & Later 3.875” & 4.000” bores, S&S® bolt pattern, Natural.
206-43 1992 & Later 3.875” & 4.000” bores, S&S® bolt pattern, Black.
206-72 1992 & Later 3.875” & 4.000” bores, S&S® bolt pattern, Polished.
3 PC FLYWHEEL DESIGN
206-70 1992 & Later 3.875” & 4.000” bores, Ultima® 100/107/113 C.I., Natural finish.
206-71 1992 & Later 3.875” & 4.000” bores, Ultima® 100/107/113 C.I., Black finish.
206-73 1992 & Later 3.875” & 4.000” bores, Ultima® 100/107/113 C.I., Polished finish.
206-48 1992 & Later 4.250” bore, Ultima® 120 & 127 C.I., Natural finish.
206-49 1992 & Later 4.250” bore, Ultima® 120 & 127 C.I., Black finish.
206-78 1992 & Later 4.250” bore, Ultima® 120 & 127 C.I., Polished finish.
206-44 1992 & Later 4.400” bore, Ultima® 140 C.I., Natural finish.
206-45 1992 & Later 4.400” bore, Ultima® 140 C.I., Black finish.
206-74 1992 & Later 4.400” bore, Ultima® 140 C.I., Polished finish.