Sbc Main Caps Torque Specs

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.

Sbc main caps torque specs.

Cam bolts 40 45 ft lbs. Rocker arms 17 23 ft lbs. Front cover 75 lb. Outer main cap bolt.

Size use torque lubricant. Always torque bolts in three equal increments. 1 4 20 oil pump 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. Verify your engine specs with a service manual for your year and model. 7 16 main caps 2 bolt engine oil. Oil unless noted oil pan to front cover 80 lb.

Intake manifold bolts 23 25 ft lbs. Flywheel flexplate bolts 75 85 ft lbs. Rod caps or rod bearing caps should be torqued to 45 lb ft for the 327 engine and 35 for the 350 engine. Pressure plate bolts 35 ft lbs.

For the 3 8 inch outer bolts. 7 16 inner main caps 4 bolt. Front cover bolts 12 15 ft lbs. Harmonic damper bolts 70 90 ft lbs.

Screw in rocker arm studs. Outer main cap bolts 35 40 ft lbs. Outer main cap bolt. Oil pump bolt 23 28 ft lbs.

These are the caps on the crankshaft. 7 16 main caps 2 bolt engine oil. For 289 hp boss 302 cylinder head bolts 65 72 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.

Inner main cap bolt. Intake manifold bolts cast iron heads 30 ft lbs. Main cap torque specification on the typical chevrolet 350 two bolt main engine is 70 ft lbs.