Trivia Question about Pontiac Hood Tachometers - Pontiac GTO Forum
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post #1 of 14 (permalink) Old 08-05-2014, 03:32 PM Thread Starter
 
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Trivia Question about Pontiac Hood Tachometers

What was the highest RPM Redline every put in a factory Pontiac hood tachometer and what engine was it used for?
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post #2 of 14 (permalink) Old 08-05-2014, 03:40 PM
 
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Without looking it up, I believe it is 5500 rpm for the OHC Sprint engine in a firebird....
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post #3 of 14 (permalink) Old 08-05-2014, 03:58 PM
 
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And the Firebird was Verdoro Green!

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post #4 of 14 (permalink) Old 08-05-2014, 04:02 PM Thread Starter
 
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You were correct about the engine, it was the Sprint OHC 6 banger. It was installed in A-body (Tempests & LeMans) and F-body ( Firebirds). However your RPM guess was incorrect.
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post #5 of 14 (permalink) Old 08-05-2014, 04:50 PM
 
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1969 OHC Sprint 6-cyl having 230HP @ 5,400 RPM's.

5,400 RPM's is my final offer.
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post #6 of 14 (permalink) Old 08-05-2014, 08:26 PM
 
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6500 rpms
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post #7 of 14 (permalink) Old 08-06-2014, 06:56 AM
 
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Pro/cons of hood tach? I think they look cool, but hate the idea of cutting a hole in my roof. Also what about it bad weather do they go bad easy?
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post #8 of 14 (permalink) Old 08-06-2014, 08:04 AM Thread Starter
 
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6,500 is the correct answer. It was for the 1967 OHC Sprint 6-cyl having 230CI and 215HP. A HO 10.5 compression motor that had the highest HP to CI ratio of any Pontiac engine produced during the muscle car era. Pontiac realized very quickly that the redline was set too high and started using 5,500 redlines after only a few months of production. Pontiac also decided the tachometers were too large and reduced the size both length and height after only a few months of production as well.
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post #9 of 14 (permalink) Old 08-06-2014, 08:06 AM Thread Starter
 
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Originally Posted by srea76 View Post
Pro/cons of hood tach? I think they look cool, but hate the idea of cutting a hole in my roof. Also what about it bad weather do they go bad easy?
Note: A hood tach should be mounted on the hood so you can see it from the driver's seat. I do not advise mounting it on the roof.
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post #10 of 14 (permalink) Old 08-06-2014, 09:53 AM
 
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Originally Posted by Grant1969 View Post
6,500 is the correct answer. It was for the 1967 OHC Sprint 6-cyl having 230CI and 215HP. A HO 10.5 compression motor that had the highest HP to CI ratio of any Pontiac engine produced during the muscle car era. Pontiac realized very quickly that the redline was set too high and started using 5,500 redlines after only a few months of production. Pontiac also decided the tachometers were too large and reduced the size both length and height after only a few months of production as well.
I guessed the correct replacement, I was not aware of the original 6500! Good to learn...


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And the Firebird was Verdoro Green!
The Hood tach is best looking in Nightshade Green....and can run extra rpms without engine damage....
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