motor mount bolt sizes
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by bogus
3/8 - 16 x .75" long.
Get a grade 8.
Get a grade 8.
I knew they were 3/8" NC but without pulling one out I would have guessed 3/4" to 1" max. on length. I'm sure then that he's correct. 
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
You can tell the depth you need by sticking a straw or wire into the hole, hold your fingers where the straw is flush with the block, then, as you're holding it, remove it and measure.
I know they're 38thsx16 (coarse), but I never paid any attention to the actual length. 3/4" sounds right though. I use lock washers under the bolt heads on mine, too.
Jake
I know they're 38thsx16 (coarse), but I never paid any attention to the actual length. 3/4" sounds right though. I use lock washers under the bolt heads on mine, too.
Jake
