Sbc Main Caps Torque Specs

7 16 inner main caps 4 bolt engine oil.

Sbc main caps torque specs.

Sbc crank main caps and rod bolts main bearing caps on 327 engines should be torque in two steps to between 60 and 70 lb ft while 350 engines should be taken to 75. Cam thrust plate bolts 8 10 ft lbs. For the 3 8 inch outer bolts. Specifications for the four bolt main are 70 ft lbs for the inner bolts 65 ft lbs for the 7 16 inch outer bolts and 40 ft.

Pressure plate bolts 35 ft lbs. Fastener type torque spec main cap bolts 60 70 ft lbs. Harmonic damper bolts 70 90 ft lbs. Intake manifold bolts cast iron heads 30 ft lbs.

Front cover 75 lb. Oil pump bolt 23 28 ft lbs. Main cap torque specification on the typical chevrolet 350 two bolt main engine is 70 ft lbs. 7 16 main caps 2 bolt engine oil.

Screw in rocker arm studs. Cam bolts 40 45 ft lbs. Rocker arms 17 23 ft lbs. Jumping even later in the 1960s chevy made major design changes to the block crankshaft and connecting rod areas including a new large journal crank with 2 10 inch rods and 2 45 inch mains compression heights varied and in 1968 chevy started to introduce new bore and stroke combinations like the 307.

Rod caps or rod bearing caps should be torqued to 45 lb ft for the 327 engine and 35 for the 350 engine. Always torque bolts in three equal increments. These are the caps on the crankshaft. Outer main cap bolt.

Outer main cap bolts 35 40 ft lbs. Inner main cap bolt. Outer main cap bolt. Flywheel flexplate bolts 75 85 ft lbs.

Front cover bolts 12 15 ft lbs. For 289 hp boss 302 cylinder head bolts 65 72 ft lbs. Intake manifold bolts 23 25 ft lbs. Connecting rod bolts 19 24 ft lbs.

1 4 20 oil pump cover 80 lb. 7 16 inner main caps 4 bolt. Size use torque lubricant.