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9 members (DadsFirstPickup, Guitplayer, 3800GUY, Woodcmiami, KCMongo, Shade Baby, 2-Ton, NorCal52Suburban, sron48),
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Mod | | | Forums66 Topics128,049 Posts1,055,662 Members48,426 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Dec 2014 Posts: 357 'Bolter | | 'Bolter Joined: Dec 2014 Posts: 357 | Is there any reason to "seal" the bolts screwed into something like a differential. Or do we rely on the bolt stretching and sealing the threads.
I'm wanting to use a little pipe sealer in my threads.
Sorry to ask Stupid questions. I've been a Electrician for too long.
Julian Carter
1970 Triumph GT6
1967 Triumph TR4A
1952 Chevy 3600
1948 MG-TC
| | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | Normally no sealant is required. Most bolt holes do not go through into the liquid storage area. In other words they are a blind hole. Those that do go all the way through are sealed when torqued to specs.ðŸ›
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | On my two differentials the bolt holes that hold the differential to the housing and the rear cover extend into the inside environment. It is common to see lock washers on these bolts and they do not seal. However the hypoid fluid is pretty thick. | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | RTV silicone is good for these situations.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Nov 2000 Posts: 1,966 'Bolter | | 'Bolter Joined: Nov 2000 Posts: 1,966 | Some people use copper crush washers, I have read.
Professional Novice
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