Bolt Torque Question?
#3
Yes, and some of the manuals are wrong. Go by the size and grade of the bolt
a 3 pointed Y on the head means "grade 5". Most these are 5/16 grade 5. If memory serves, 15 ft lbs, NOT 30 for the rocker shafts
a 3 pointed Y on the head means "grade 5". Most these are 5/16 grade 5. If memory serves, 15 ft lbs, NOT 30 for the rocker shafts
#5
if i remember right. the small blocks has 4 bolts around each cyl. with the dia 1/2-13. torque 85 ft lbs. and big blocks have 5 bolts. with dia 7/16 at 70 ft lbs. and the 15 ft lbs for rocker shaft bolt of 5/16-18 is right for the small block. and big block rocker shaft bolt 3/8-16 25 torque. all this from a 1967 coronet factory service manual.
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ralphr87
Engines, Exhaust and Fuel systems
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09-25-2012 09:53 PM