Thread locker, sealant and anti-sieze Oh My!

jcode68

Active Member
Jul 15, 2003
892
1
29
Massachussetts
I am getting ready to bolt up all the covers, accessories, brackets etc, etc. for my new long block this weekend and had some questions about what product to use on which bolts. I have cast iron block, aluminum heads (already on). Can anyone inform me of what I should use on the following (thread locker (red or blue), anti sieze compund, thread sealer):

Intake bolts
Fuel pump eccentic/cam gear bolt
Timing cover bolts
Water pump bolts
Oil pump bolts
Oil pan bolts
Fuel pump bolts
Flywheel bolts
Any other bolts I forgot

I'm certain that I need to use the anti-sieze on anything going into aluminum, but want to be sure on everything.
 
I would use anti seize on the header bolts. AFR heads aren't heli-coiled. Found that out the hard way after stripping the head once on removing the header bolt. Heli-coiled those and don't use anything you mention anywhere on the motor.
 
Thanks for confirming what I had assumed regarding anti sieze on anything going into the heads. Are you saying no thread locker or sealant on any of the other engine fastners? I was guessing I would thread lock the flywheel bolts at minimum and possibly use sealant on bolts for the timing cover (not sure if these go into any water passages?). Anyone else have a comment on this?
 
I have the tendency to follow the manufacturer's recommendations. There are people out there whose entire job is just to figure out the best way to do things and write instructions. Trust them.

Umm having said that, let me take a swing.
harmonic balancer - I would use anti seize.
intake - just put an intake on a 302 and Weiand recommended sealant on all the bolts, not just the ones through the water jacket.
timing cover - I use sealant
water pump - the ones that just go into the timing cover (aluminum threads) I put anti seize on. The ones into the block, sealant.
oil pump and pan - anti seize
fuel pump - anti seize
flywheel - blue threadlock

I don't use red for anything that is supposed to come apart at a later time. Like I said at the top - I recommend using a shop manual or the directions that come with the parts. I'm not a pro - trust the pros rather than me! :)
 
jcode68 said:
Intake bolts
Fuel pump eccentic/cam gear bolt
Timing cover bolts
Water pump bolts
Oil pump bolts
Oil pan bolts
Fuel pump bolts
Flywheel bolts

Intake bolts - I would use anti-sieze(AS)
Cam gear bolt - blue Loctite.
Timing cover - AS on all or teflon sealer where they are near a water passage.
Water pump bolts - AS
Oil pump - nothing or blue Loctite
Oil pan - nothing, maybe a dab of oil
Fuel pump - AS
Flywheel bolts - a threadlocker/sealer combo is a good idea. Perhaps Red Loctite
 
Thanks for the feedback. For the intake bolts, one says AS, the other says sealant. Since this is going into aluminum heads, I would lean toward AS. I have a shop manula, but unfortunately the factory didn't provide aluminum heads or intake :(
 
jcode68 said:
Thanks for the feedback. For the intake bolts, one says AS, the other says sealant. Since this is going into aluminum heads, I would lean toward AS. I have a shop manula, but unfortunately the factory didn't provide aluminum heads or intake :(
The manufacturer of your aluminum heads will have a recommendation. You should contact them. They will be happy to help, as they want to be sure you have good results using their product.