OMC Stern Drives And Motors 1964-1986 Repair Manual., Page 508Get this manual
SPECIFICATIONS GMC V-6 ENGINES 229 3.8 Litre 1981-82 GMC ENGINES
ENGINE BLOCK
GENERAL SPECLFICATIONS TypeNoof cylinder 90 In head Valve arrangement 3.800 3.400 Borestroke Displacement cuin229 Litres 3.8 Cylinder number, to rear Starboard bank 2-4-6 Port bank 1-3-5 Firing order 1-6-5-4-3-2 Compression ratio 8.0: Compression pressure 130 psi (1) Water tempcontrol Thermostat 1' Thermostat opens at A1 ternator belt adjustmet, give with finger pressure IJ4-3Sff Full throttle operating range 4200-4600 rpm
Vain journal c!iam eter All 2.4995 Out-of-round Production .0015 max,ahbeariw clearance Production All ,004-.OO Crankpin diameter 2.2495-2.2487 Camshaft Bearing journal dia1.785-1.786 Type of drive Rouble row chain
l?JTS AND ADJUSTMENTS Pistons Production clearance Piston rings compression Groove clearance Production Production 2nd Gap TOP 2nd Piston rings oil Groove clearance Gap Production Piston pins Diameter Clearance Production in rod Interference Connecting rods Bearing clearance Production Side clearance Crankshaft End play