Topic: 66 GT350 tach question

[dbm350]

    Does anybody know  the correct type of screw is to mount the tach to the dashpad ?

[J_Speegle]

On mine and the other originals I've seen they have a regular pan head Phillips head screw

[Bob Gaines]

On mine and the other originals I've seen they have a regular pan head Phillips head screw

+1 . Bob

[dbm350]

   Thanks guys. Always good info here.    Doug

[s2ms]

These were on 6S1757 when I bought it in 1987. I have no reason to believe they aren't OE but the original tach died and was replaced in late 1967 so that may be a factor. I have seen the same exact style on other cars but the style in Jeff's picture I have seen much more often.

Dave

[J_Speegle]

These were on 6S1757 when I bought it in 1987. I have no reason to believe they aren't OE but the original tach died and was replaced in late 1967 so that may be a factor. I have seen the same exact style on other cars but the style in Jeff's picture I have seen much more often.

Haven't seen those used before - not sure but looked at pictures of other cars in the #1600's-1800's I have (some of those could be changed) but the ones I can make out are the same as I posted.

Thanks for sharing

[ChrisV289]

Dave,

Is the back of your tac painted the crinkle black?  I read somewhere that if the tac was replaced it wouldn't have the black crinkle, can some one confirm that?  My dad's Hertz car had the tac stolen while it was in transit from Shelby to the Hertz dealer in Miami (has the claim from Shelby and the railroad company), and the back of his tac is chrome...

[Bob Gaines]

Dave,

Is the back of your tac painted the crinkle black?  I read somewhere that if the tac was replaced it wouldn't have the black crinkle, can some one confirm that?  My dad's Hertz car had the tac stolen while it was in transit from Shelby to the Hertz dealer in Miami (has the claim from Shelby and the railroad company), and the back of his tac is chrome...

The chrome back is how the majority of the service units were sold and is the basis for the current general consensus that the tachs that were replaced under warranty and otherwise , ended up with the chrome rear cup. The assemblyline units were meant to be the black wrinkle . If the factory units made it through the first 6 months to two years the failure rate dropped exponentially.  Bob

[s2ms]

Dave,

Is the back of your tac painted the crinkle black?  I read somewhere that if the tac was replaced it wouldn't have the black crinkle, can some one confirm that?  My dad's Hertz car had the tac stolen while it was in transit from Shelby to the Hertz dealer in Miami (has the claim from Shelby and the railroad company), and the back of his tac is chrome...

Chris,

The tach housing and mounting bracket are crinkle black (pic below) and are just as when I bought the car, other than cleaning I haven't touched them. That brings up anoher question....when an original tach failed was the whole thing replaced or just the tach itself reusing the OE housing and bracket? I'm not positive but believe my tach was replaced by the original dealer, Hi-Performance Motors.

Dave

[Bob Gaines]

Chris,

The tach housing and mounting bracket are crinkle black (pic below) and are just as when I bought the car, other than cleaning I haven't touched them. That brings up anoher question....when an original tach failed was the whole thing replaced or just the tach itself reusing the OE housing and bracket? I'm not positive but believe my tach was replaced by the original dealer, Hi-Performance Motors.

Dave

Dave,since the service if it took place would most likely have been done at a dealer I would guess that the rocket scientists that many dealers had working for them took the path of least resistance and changed out the whole unit which is the reason for current theory of the chrome units originating from service replacements. Although uncommon IMHO I have to think that some service man back in the day would use independent thought and realize that the black wrinkle finish cup should be used and changed out the back before installing. If you take the cup off the back of the unit and it will have a date stamped on the inside tach housing. This date and how it relates to your car may give you a better idea of replacement or not. Bob 

[s2ms]

Thanks Bob. The tach pictured above has a June 67 date code. When I bought the car in 1987 I assumed it was the original tach but at that time was unfamiliar with the subtle differences between OE 66 tachs and early service replacements. I took the tach apart a few years later to restore it and discovered the date code proving it was not original. It was in such good shape I just cleaned the inside glass surface, repainted the redline pointer which had faded a little, and put it back together. It's still working perfectly today. When I finally tracked down the original owner he confirmed the original tach died and was replaced about a year after he bought the car.

Dave

[Bob Gaines]

Thanks Bob. The tach pictured above has a June 67 date code. When I bought the car in 1987 I assumed it was the original tach but at that time was unfamiliar with the subtle differences between OE 66 tachs and early service replacements. I took the tach apart a few years later to restore it and discovered the date code proving it was not original. It was in such good shape I just cleaned the inside glass surface, repainted the redline pointer which had faded a little, and put it back together. It's still working perfectly today. When I finally tracked down the original owner he confirmed the original tach died and was replaced about a year after he bought the car.

Dave

Dave,a nice tid bit of the cars history so button up the back of your tach and don't give it another thought. It looks the way it is supposed to on the outside. Bob

[dan green]

+1 on Jeff's.
This is #455, regular pan head screws.  Not a real close up but you can see what they are.  Pretty sure the dash pad has never been out.
This car also has over rides.

[Bob Gaines]

+1 on Jeff's.
This is #455, regular pan head screws.  Not a real close up but you can see what they are.  Pretty sure the dash pad has never been out.
This car also has over rides.

Dan ,it appears that although the pan head screws are consistent with what we mostly see, the finish on the cup and dash bracket appear not to be the normal black wrinkle. I only mention it so others reading will not be confused. Bob