Sbc Main Caps Torque Specs

Front cover bolts 12 15 ft lbs.

Sbc main caps torque specs. Pressure plate bolts 35 ft lbs. 7 16 inner main caps 4 bolt engine oil. For the 3 8 inch outer bolts. Intake manifold bolts cast iron heads 30 ft lbs.

Cam thrust plate bolts 8 10 ft lbs. Always torque bolts in three equal increments. These are the caps on the crankshaft. Oil pump bolt 23 28 ft lbs.

Fastener type torque spec main cap bolts 60 70 ft lbs. Size use torque lubricant. Rocker arms 17 23 ft lbs. Cam bolts 40 45 ft lbs.

Flywheel flexplate bolts 75 85 ft lbs. 7 16 inner main caps 4 bolt. 1 4 20 oil pump cover 80 lb. Oil unless noted oil pan to front cover 80 lb.

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. Connecting rod bolts 19 24 ft lbs. Screw in rocker arm studs. Intake manifold bolts 23 25 ft lbs.

7 16 main caps 2 bolt engine oil. Outer main cap bolts 35 40 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. Front cover 75 lb.

For 289 hp boss 302 cylinder head bolts 65 72 ft lbs. 7 16 main caps 2 bolt engine oil. Rod caps or rod bearing caps should be torqued to 45 lb ft for the 327 engine and 35 for the 350 engine. Outer main cap bolt.

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. Harmonic damper bolts 70 90 ft lbs. Outer main cap bolt.