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Old 12-23-2014, 07:07 PM
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Arrow Any 1970, 71, 72 Trans Ams built with Hood Tachometers?

Throwing this question out there to others who have more knowledge and experience than I do on 1970, 71, 72 Trans Ams. Were the UPC "U85 Tachometer, Hood Mounted" aka: Hood Tachs ever available as an option on Trans Ams?

Quote:
Originally Posted by rexs73gto View Post
Alvin you have the page out of the 73 order book but in the 70-72 order books the hood tach was an option for the birds & you could have it on a T/A also but the tach was a delete if you ordered the hood tach & got the large clock in that left pod. Otherwise you would end up with 2 tachs & that would be stupid looking to have a tach inside & one on the hood to.
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Originally Posted by Alvin View Post
1970, 71, 72 Trans Am with UPC "U85 Tachometer, Hood Mounted" not found
Don't see it on this 1972 Firebird order form http://www.gt-37.org/gallery/main.php?g2_itemId=5184

====> Or this Special Equipment 1972 order form http://www.gt-37.org/gallery/main.php?g2_itemId=5226

Don't see it on this 1971 Firebird order form http://www.gt-37.org/gallery/main.php?g2_itemId=7035

====> Or this Special Equipment 1971 order form http://www.gt-37.org/gallery/main.php?g2_itemId=7041

UPC "U85 Tachometer, Hood Mounted" IS shown on this 1970 LeMans Sport & GTO order form http://www.gt-37.org/gallery/main.php?g2_itemId=7014

Perhaps you can find it as you described above and share it with us from one of these order forms? http://www.gt-37.org/gallery/main.php?g2_itemId=1675

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Old 12-23-2014, 07:09 PM
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Never say never - right? Post them if you have any documented 2nd Gen 1970, 71, 72 TRANS AM built with a hood tach please!


Last edited by Alvin; 12-23-2014 at 07:16 PM.
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Old 12-23-2014, 07:14 PM
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Quote:
Originally Posted by Alvin View Post
Never say never - right? Post them if you have any documented TRANS AM built with a hood tach please!
Reason for the 2nd Gen Hood Tach question post# 35 here http://forums.maxperformanceinc.com/...14#post5326514 Thxs.

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Old 12-23-2014, 07:56 PM
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Never seen one or heard of one ever being built.

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Old 12-23-2014, 08:32 PM
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Never seen one or heard of one ever being built.
Thxs. "Well someone on the Internet said...'Bonjour!'"


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Old 12-25-2014, 01:18 AM
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Quote:
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Thxs. "Well someone on the Internet said...'Bonjour!'"







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Old 12-24-2014, 04:52 AM
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I think that one ^^^ was built late in the day on a Friday.

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Old 12-24-2014, 06:46 AM
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Alvin, I don't know where my old book is but I remember that in my little sales book the one that use to go in my pocket, it's about 4 inchs wide by 10 inchs tall. But in there I think is where I remember seeing it last. But in my order book when you got into the gauges there was an astrist & when you went down to the bottom of the book you saw the note saying that when useing the hood tach that the in dash tach was replaced with the large clock & there would be an additional charge of ?? At least thats where I think I saw it last. I'm not 100% sure but I do remember the astrist then the note to go with. It was similar to when you got a hood tach on the A-bodies there to was a note about the speedo with the trip odometer. But thats a different subject. As I mentioned before the only hood tachs I've ever seen on an F-body has been a Formula, & now that T/A in the pic post.

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Old 12-24-2014, 02:14 PM
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I'm going to say no to the factory installed hood tach.

No mention of it in the factory assembly manual.

The hoods lower brace structure has no cut outs or features to provide clearance for the fasteners and wiring.

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Old 12-24-2014, 02:56 PM
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I have the 1970 order forms, 1970 price sheets, and 1970 Pocket Facts.

Hood tach was not available on the 1970 Firebirds, or the 1969 Trans Am's.

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Old 12-24-2014, 05:17 PM
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Thxs for the input. Seeking any verifiable Trans Am factory hood tach info like the attached "1970 Tempest Hood Tach Installation" page courtesy www.gt-37.org for 1970, 71, 72, 73 Trans Am.
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Old 07-14-2021, 10:02 AM
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Hood tach was also available on Grand Prixs, I have seen the template for cutting the hood.

Part of the issue was that the hood tach was built only with the passive circuit and not suited to modern ignitions. I used to replace the cap in Vega transistor circuits and put in hood tachs, Now they are available on the web.

'nother issue was they were not very accurate. Trim was via plated on resistors and calibration was done with a wave generator, O'scope, awl (to increase resistance), and pencil (decrease resistance).

Transistor circuit board.
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Old 07-14-2021, 03:12 PM
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Quote:
Originally Posted by MikeNoun View Post
I have the 1970 order forms, 1970 price sheets, and 1970 Pocket Facts.

Hood tach was not available on the 1970 Firebirds, or the 1969 Trans Am's.
Do we need ANY more info than this?
Could be there is a market for a retro built Firebird called " Good Intentions".

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Old 07-14-2021, 04:15 PM
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On a Leon Russell Facebook group, once every few weeks, someone posts a pic of Waylon Jennings, Glen Campbell, and Leon Russell. It actually is on the net when you search Leon images. And it is mislabeled. It is a guy that kinda looks like a young Leon. The threads are popcorn time funny when someone posts the pic, thinking everyone will go "Wow!". Sorry for obscure, it is a music version of a TA hood tach thread here.

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Old 01-15-2015, 07:39 PM
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As I have understood it, as a factory option the hood tach was only available to the 1970 & 1971 Formulas - and even then if I recall correctly it was shipped with the car to be installed at the dealer...

And it was a very rare option at that.

I am guessing that it was offered so that a racer could order a '70 Formula as cheap as they wanted - and still have a tach (eg: not required to order rally gauges in order to get the tach).

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Old 07-14-2021, 09:21 AM
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Could you produce a RPO for this please. No RPO NO such option, simple as that.

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Old 07-14-2021, 11:42 AM
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How's this(?);
Code #721/UB5

A pre-production yellow 1970 Formula that was doing rounds had it;
It may not have been a common item, but was an intended option - that was more or less made irrelevant from the proper gauge options.
It was a cover car for the February 1970 issue of Hot Rod magazine.

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1970 Formula 400
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Quite likely one of few '70 Muncie three speed Formula 400's left.


1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing)
2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)

Last edited by unruhjonny; 07-14-2021 at 11:53 AM.
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Old 07-14-2021, 12:45 PM
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Ok UB5 is a hood tach and a pre production car had one. Do you have the build sheet for said car that shows this code? I’m guessing not. Can anyone produce a 1970 Firebird order form that includes that code as being available? I’m more than willing to accept it if proper evidence is produced. Not “I heard” evidence.

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Old 07-14-2021, 02:03 PM
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Default 70 Formula with hood tach

Attached a couple pics of a hood tach on a 70 Formula I have. The hood tach appears to have been very nicely installed and has been there for a long time. I expect it was a "Day 1" installation by dealer.
Attached the PHS which shows that the hood tach is not listed which supports that it was not a factory installed option.
Steve
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  #20  
Old 07-14-2021, 02:56 PM
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Quote:
Originally Posted by comanchefirebird View Post
Attached a couple pics of a hood tach on a 70 Formula I have. The hood tach appears to have been very nicely installed and has been there for a long time. I expect it was a "Day 1" installation by dealer.
Attached the PHS which shows that the hood tach is not listed which supports that it was not a factory installed option.
Steve
that's a neat car - thanks for sharing the pictures!!

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1970 Formula 400
Carousel Red paint on Black standard interior
A no-engine, no-transmission, no-wheel option car.
Quite likely one of few '70 Muncie three speed Formula 400's left.


1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing)
2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)
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