Bolt Identification

[81L81]

I took a turn the other day and heard something ping along side of the road. So I pulled over and walked a few paces back to find a long bolt in the road. It was still hot to the touch so I assumed it was mine. I took the Vette back to my garage to see if I could locate where it belonged to no avail. So I am asking if you guys could possibly identify it from the pictures... Thanks for the help.

 

[bill81vette]

Check your starter...
It looks like one of them
There are only 2!!!!

 

[Hib Halverson]

Gotta be the long starter bolt.

 

[paz72vette]

Don't starter bolts have ribs next to the head as well as a washer like head? Also I believe they are 9/16"

 

[81L81]

Starter bolts were the first bolts I checked. Not starter bolt....I really need to put it up on a lift.

 

[Hib Halverson]

Not a starter bolt....there are not too many places in a C3 which use a bolt that long and which does not have a cotter pin

Motor mount to frame is the only other place I can think would use one.

 

[mkapp7879]

Is that 7/16"? Motor mount?

3/8"? AC compressor lower pivot bolt??
Trans crossmember to frame?

 

[Peer81]

Just my $0.05.
Chech your rear spring center bolts under the diff. There should be 3, 2 long ones like this one and one short one. As your exhaust is running under it that is why it was hot I think

Greetings Peter

 

[b2758]

Looks like some blue paint on the bolt which is the engine color. Thought about pivot bolt for alternator or power steering but I think you would know if one of those came out. Worth checking.

 

[TimAT]

IIRC, bolts that are marked like that one, with the 9.8 on the head, are usually metric. Standard US threaded bolt markings are normally hash marks.

 

[Peer81]

IIRC, bolts that are marked like that one, with the 9.8 on the head, are usually metric. Standard US threaded bolt markings are normally hash marks.

I was also thinking about that one. As there aren't that much metric parts in an 81, try the airpump (metric) maybe the bracket bolts are also metric?

Greetings Peter

 

[mkapp7879]

The AIR pump lower bolt won't come out unless the pulley is removed.

Just something else to throw out.....front stabilizer link bolt.