[Ed Sellers]

Could some one please tell me what head markings are on the valve cover bolts on a 65 gto and are they black.

[Option 382]

Manufacturers with vary but here is a picture of my 1965 "born on" bolt with the letter E and has a divot in the middle. The bolt is black and if you are trying to get that factory concourse look it should/might have some blue engine overspray like mine does. Not all of my valve cover bolts have the overspray though.

Here is a link from 60sstuff showing off his original 66 bolts. His valve cover bolts are the same shape but has no divot and a different manufacturer letter: http://forums.maxperformanceinc.com/...ighlight=bolts

[Ed Sellers]

Originally Posted by Option 382

Manufacturers with vary but here is a picture of my 1965 "born on" bolt with the letter E and has a divot in the middle. The bolt is black and if you are trying to get that factory concourse look it should/might have some blue engine overspray like mine does. Not all of my valve cover bolts have the overspray though.

Here is a link from 60sstuff showing off his original 66 bolts. His valve cover bolts are the same shape but has no divot and a different manufacturer letter: http://forums.maxperformanceinc.com/...ighlight=bolts

Thanks again Option382 that's the bolt I thought it was ,wasn't sure.

[6t5gto]

I think I have seen the letter E,D and L on 65s. I wouldn't think this is a manufacturing mark since its just one letter. Could this letter represent the year?

[Option 382]

From my machinist books E stands for the Earnest Machine Products Company in Ohio.

D is the Dan Loc-LLC in Texas

L is currently a Taiwan bolt company.

[dld]

here is a good thread on nuts and bolts

http://forums.maxperformanceinc.com/...ve+cover+bolts

[Ed Sellers]

Originally Posted by 6t5gto

I think I have seen the letter E,D and L on 65s. I wouldn't think this is a manufacturing mark since its just one letter. Could this letter represent the year?

Thank you 6t5gto! The letter E with a dimple inside head is what they should be,got whacked at the nationals this year. Getting ready for Columbus next July,thank you for the info.

[Dick Boneske]

I've attached pictures of various valve cover bolts. The ones on my '64 have the letter "D" on the head. I've also attached a picture of some OLD valve cover bolts that have the letter "L" on the head, and a flat-top one with the letter "E". I also have some that just have a dimple in the middle of the head. These certainly are not from Taiwan, as I've had them since the 1970's.

Bottom line, the markings on your car could be different from whatever the "norm" is. When my car was judged by GTOAA in 2013, no comments were made about the valve cover bolts and carb hold down nuts except that they should be black.

[Ed Sellers]

Originally Posted by Dick Boneske

I've attached pictures of various valve cover bolts. The ones on my '64 have the letter "D" on the head. I've also attached a picture of some OLD valve cover bolts that have the letter "L" on the head, and a flat-top one with the letter "E". I also have some that just have a dimple in the middle of the head. These certainly are not from Taiwan, as I've had them since the 1970's.

Bottom line, the markings on your car could be different from whatever the "norm" is. When my car was judged by GTOAA in 2013, no comments were made about the valve cover bolts and carb hold down nuts except that they should be black.

Thanh
Thanks dick, Option 382 sent some pics of his original 65 and have the letter E with a dimple in the middle, and they are black. I found them at AMK fastners , they came out with a complete line of pontiac stuff.