1993 Cadillac Eldorado Owner's Manual - Page 353

The cast aluminum pistons use compression rings and oneoil control two ring. The pistons are tin plated to provide a non-scuffing surface when the engineis new. A steel camshaftis supported by five steel backed babbit bearings. is It driven by the crankshaft through a chain at the front of the engine. The drive gear is keyed to the crankshaft and the driven sprocketis bolted to the camshaft. Both the crankshaft gear and camshaft sprocket have locating marksto provide the correctvalve timing and timing chain installation. The valve lifters are roller hydraulic type and positioned are in the aluminum lifter carrier. 4T80-E Transaxle (ETC) & 4.6 L Sport Coupe (270 hp) The 4T80-E transaxle has been designed to complement the output characteristics of the Northstar engine. The innovative design incorporates several features which enhance its overall operation. 339