Section 6A3 · Pages 488–519 (32 pages)

4.3 Liter V6

From the 1987 Chevrolet Light Duty Truck Service Manual

On-vehicle service for the 1987 4.3L V6, a 90-degree overhead-valve engine with cast-iron block and heads, four main bearings with thrust at the rear and a chain-driven camshaft on four bearings. The description and lubrication schematics are followed by rocker arm cover, rocker arm and pushrod, valve adjustment, valve stem seal and spring, intake manifold, hydraulic lifter, rocker stud, exhaust manifold and cylinder head procedures, then the torsional damper and front seal, front cover, oil pan and pump, rear main seal and retainer, camshaft lobe lift and camshaft, pistons and rods, main bearings, oil filter adapter for oil-cooler models, crankshaft, flywheel, mountings and replacement.