Table of Contents
Do Chevy 350 head bolts need sealant?
ALL the head bolts must be sealed or you will have coolant leaks everywhere.
Should I use threadlocker on head bolts?
Threadlocker dries around the bolts and will keep you from getting an accurate torque reading on the head bolts.
What do you seal head bolts with?
Loctite Headbolt & Water Jacket Sealant is a single-component anaerobic hybrid that lubricates fasteners during assembly, as well as seals the gaps between the threads.
Can you reuse head bolts Chevy 350?
If a head bolt is rusted it should not be reused. A head bolt should not be reused if the threads are galled or badly damaged. Chasing damaged head bolt threads with a die will clean up the threads but also remove material (metal) and undermine the head bolt’s ability to torque down and hold to specs.
Do you lubricate head bolts?
Yes, you should lightly oil head bolts when you install them. You don’t want to have the bores full of oil or anything, but lightly lubricate the threads and heads. Torquing a bolt that size dry will give an inaccurate and insufficient torque because of the friction of the bolt head against the head surface.
What is the best thread sealer for head bolts?
Head stud holes are blind. They do not go into the water jacket. A sealant/antiseize must be used on the head studs. Loctite # 620 is recommended.
What is the best head bolt sealer?
The Best Head Bolt Sealant: Oct 2021 Reviews & Buying Guide
| # | Image |
|---|---|
| 1 | Loctite 1158514 Head Bolt and Water Jacket Sealant, 50-milliliter Tube Click Here To Check Price |
| 2 | Permatex 59235 High Temperature Thread Sealant, 50 ml Tube Click Here To Check Price |
Do you put anything on head bolts?
Yes. For head BOLTS you always dip them in oil.
Is it OK to reuse head bolts?
Can I reuse head bolts? A head bolt should not be reused if the threads are galled or badly damaged. Chasing damaged head bolt threads with a die will clean up the threads but also remove material (metal) and undermine the head bolt’s ability to torque down and hold to specs.
Are Chevy 350 head bolts torque to yield?
All 1995 and earlier LT-series engines use the same head bolt torque (65 ft. -lb.) and tightening sequence as the original small block. GM switched to torque-to-yield (TTY) bolts in 1996, which require a slightly different approach.
Should bolts be lubricated before torquing?
So, torque isn’t the true measure of bolt tightness—it’s tension. But lubrication on the bolt threads—and a whole host of other factors—can cause fluctuation in torque readings. So once you add a lubricant of any kind to the threads, all bets are off as to whether the same torque setting will truly secure the bolt.
Can a head gasket be lifted with sealer?
Dont go crazy with it – reputable machinist told me too much could “help” a head gasket to lift. Next time you take a head off thats been sealed with it you’ll see how it could happen (dried sealant on face of head gaskets around bolt holes. Dont be afraid of it – just dont glob it on there. My two cents.
Are there any cracks in the Chevelle 400 block?
Always one of the Ultra products. For instance, the 400 block in my DD Chevelle has 6 cracks from the steam holes to the adjacent head bolt holes. Installed studs with RTV, that was in 2001. Seems to be working OK so far.
Is it safe to use Permatex on head gasket?
Permatex #2 and I do it all along the threads to be on the safe side. Permatex stuff in the white container w/ the brush. Dont go crazy with it – reputable machinist told me too much could “help” a head gasket to lift.