Part Type	Torque Specification
main cap bolts	100-110
bellhousing bolts	45-55
flywheel bolts	50-65
connecting rod nuts/bolts	From 1935 thru 1948, the rod bolt torque was 55-60 ft. lbs From 1949 thru 1952 the connecting rod bolts were torqued 40-50 ft.lbs with oiled threads In 1953 the connecting rod cap bolts were torqued 35-45 ft. lbs
oil pan corner bolts	12-15
oil pan bolts	6-7
clutch pressure plate bolts	25-30
cylinder head bolts	the early head bolts (1935 thru 1952) were torqued 75-80 ft. lbs later 90-95 ft lbs
manifold clamp bolts	15-20
manifold end clamp bolts	25-30
water pump bolts	25-30
spark plugs	14 mm plugs threads, so not all plugs are torqued 20-25 ft. lbs smaller 10mm plugs used on 216s from about 1941 to about 1948 are only torqued 12-15 ft. lbs Pay attention and be careful!
fuel pump bolts	15-20
rocker shaft bolts	25-30

Not all 216 engines used 14 mm plugs threads, so not all plugs are torqued 20-25 ft. lbs. The smaller 10mm plugs used on 216s from about 1941 to about 1948 are only torqued 12-15 ft. lbs. Pay attention and be careful. Also, the early head bolts (1935 thru 1952) were torqued 75-80 ft. lbs, not 90-95 ft. lbs. Connecting rod bolt torque changed over the years too. From 1935 thru 1948, the rod bolt torque was 55-60 ft. lbs. From 1949 thru 1952 the connecting rod bolts were torqued 40-50 ft.lbs with oiled threads. In 1953 the connecting rod cap bolts were torqued 35-45 ft. lbs. Folks working on these older engines need to be really careful taking hear-say as fact. Find a shop manual reprint, or visit a library. It might save you from making some very costly mistakes

Chevrolet 235 Cylinder Head Bolt Tightening Sequence