exhaust stud crimp nuts

[Richard Pressley]

Are the correct exhaust stud crimp nuts ('67 SB) supposed to be zinc plated or steel?

[Dale Pearman]

Re: exhaust stud crimp nuts

They're called, "Stover Nuts" and appeared in plain steel. The threaded holes are elliptical in shape and when installed are deformed to a circle to engage the stud. The elasticity of the steel, in trying to maintain an ellipse, clamps the nut to the stud much like a lock washer.

Dale

[Dale Pearman]

Re: exhaust stud crimp nuts

They're called, "Stover Nuts" and appeared in plain steel. The threaded holes are elliptical in shape and when installed are deformed to a circle to engage the stud. The elasticity of the steel, in trying to maintain an ellipse, clamps the nut to the stud much like a lock washer.

Dale

[John H.]

Re: exhaust stud crimp nuts

When I restored my '57 four years ago, these nuts were still available from GM under P/N 3829086; don't know if they're still available or not.

[John H.]

Re: exhaust stud crimp nuts

When I restored my '57 four years ago, these nuts were still available from GM under P/N 3829086; don't know if they're still available or not.

[Joe L.]

Re: exhaust stud crimp nuts

John-----

That's the correct original part number for the exhaust stud nuts and they are still available from GM under that number. However, it's possible that the actual finish on the nuts may have changed over the years. So, if the originals were un-plated, the current-issue may be plated and vice-versa.

[Joe L.]

Re: exhaust stud crimp nuts

John-----

That's the correct original part number for the exhaust stud nuts and they are still available from GM under that number. However, it's possible that the actual finish on the nuts may have changed over the years. So, if the originals were un-plated, the current-issue may be plated and vice-versa.