Which head bolts need asealant applied to them on a 454 big block?
Do not use sealant on the head gasket. I use permatex on the threads of the bolts that go into water jackets.
Yes, it sure can.
That would depend on which engine and what type of lube/sealant is used on the head bolts. Can't answer the question without more information.
65 foot pounds clean threads in block 1st and use sealant on the dolts that go into the water jacket...oil all other bolts
17 per head 34 in all
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65 on the long bolts 45 on the short bolts
Any bolt that passes through the block/head into the cooling system should have thread sealant applied to the threads when installed.
60-70 ft/lbs with sealant applied. When torqueing the heads, it is helpful to start at around 25 ft. lbs. and torque all the bolts, then go to 50 ft. lbs., and finally, your specified torque. Doing this in incriments will help give a nice even torque to the heads.
Cylinder head to block torque = 80 ft-lbs.
The cylinder head on a Toyota Paseo requires 33 pounds of torque on the head bolts. If the bolts are over tighten the block can warp leading to a blown head gasket.
Head bolts and outer mains are 65 ft./lbs., inner mains are 70 ft./lbs.