Bolt size for engine mounts?
Thread Starter
Le Mans Master
Joined: Aug 2000
Posts: 6,362
Likes: 7
From: Brazos TX
Cruise-In IV Veteran
Cruise-In V Veteran
Bolt size for engine mounts?
While removing the engine mount bolts I noticed that they seemed loose in their holes. I'm talking about the long bolts that go through the mount and the frame. I just want to confirm the correct size. The ones I have are 7/16 diameter coarse thread bolts with a 5/8 hex head and an 11/16 hex nut. This is on a '78. Can anyone confrim this?
[Modified by burners, 10:12 AM 7/10/2002]
[Modified by burners, 10:12 AM 7/10/2002]
Pro
Joined: Mar 2002
Posts: 511
Likes: 0
From: St. Louis MO
Re: Bolt size for engine mounts? (burners)
sounds about right. Most all chevy mounts use a 7/16" bolt on the motor mounts. The reason they may feel slopply is that the hole in the frame is larger than 7/16 and the mount should have a slot built into it. This is for installation and just in case manufacturing tolerances were a little off.
