Sbc Main Caps Torque Specs

Screw in rocker arm studs.

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. Always torque bolts in three equal increments. Rocker arms 17 23 ft lbs. Connecting rod bolts 19 24 ft lbs.

Fastener type torque spec main cap bolts 60 70 ft lbs. Inner main cap bolt. Cam bolts 40 45 ft lbs. Outer main cap bolt.

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. These are the caps on the crankshaft. Rod caps or rod bearing caps should be torqued to 45 lb ft for the 327 engine and 35 for the 350 engine. Cam thrust plate bolts 8 10 ft lbs.

Size use torque lubricant. Harmonic damper bolts 70 90 ft lbs. Front cover 75 lb. Oil unless noted oil pan to front cover 80 lb.

7 16 main caps 2 bolt engine oil. Pressure plate bolts 35 ft lbs. 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. Verify your engine specs with a service manual for your year and model.

7 16 inner main caps 4 bolt engine oil. Main cap torque specification on the typical chevrolet 350 two bolt main engine is 70 ft lbs. For 289 hp boss 302 cylinder head bolts 65 72 ft lbs. Front cover bolts 12 15 ft lbs.

Outer main cap bolts 35 40 ft lbs. For the 3 8 inch outer bolts. 7 16 main caps 2 bolt engine oil. Outer main cap bolt.

Oil pump bolt 23 28 ft lbs. Intake manifold bolts 23 25 ft lbs. 7 16 inner main caps 4 bolt.