At the auto parts store there is like 15 different types and brands of tread sealer which is the best for use on head bolts?

 

don't.

just make sure your not re-using your old "torque-till-yeild" bolts. buy new ones.

and torque the new ones down to the proper spec.

 

PERMATEX #2b

 

anything non hardening should work. liquid teflon seems to be the prefered sealer any more. i use permatex PST.

 

Why can't i use the stock bolts??? They are new off a GM create engine just changing the heads

 

SBC doesn't use TTY bolts. you can tell a TTY bolt by a torque spec like 45 ft/lbs and a 1/4 turn or 45 ft/lbs and 90*turn

 

I use ARP thread sealer that I got from Jegs. It's a 7 oz tube and it works great.

 

Permatex #3H or #3D

 

does permatex ultra blue work too?

nebu.

 

non hardening, not rtv or anything else that sets up and gets hard

 

Permatex® Aviation Form-A-Gasket® No. 3 Sealant
Nonhardening liquid gasket sealant/dressing/coating is a thin, brushable dressing or sealer for close-fitting parts. Suitable for continuous temperatures to 400°F (204°C). Resistant to antifreeze, aviation fuels, high-detergent oils and lubricants. Conforms to MIL-S-45180 D.

Suggested Applications:
Gasket coating or sealing close-fitting machined parts.

P/N Container Size Pack Item #


3D 16 oz. bottle 12 80017

3H 4 oz. bottle 12 80019

 

this is what i bought from the store... http://www.permatex.com/products/pro...&item_no=59214

Will that work??

I can't find anything from permatex that says 3D or 3H in the store or on there web site.

 

That will be ok for head bolts. However I have found that gas breaks that sealant down so I wouldnt use it to seal rocker studs or intake bolts....
http://www.permatex.com/products/ind...%203%20Sealant

 

So is 3D and 3H the same thing just differnt size bottles?

 

yea

 

i use plumbers pipe thread dope in can with cap brush, ive never had any problem with using such for ten years now