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Old 06-23-2016, 11:35 AM
unruhjonny's Avatar
unruhjonny unruhjonny is offline
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Join Date: May 2004
Location: Calgary, AB, Canada
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Quote:
Originally Posted by 455hota View Post
My 70 TA with M20 4 speed and 3:55 gears does have that same speedometer adapter. I was wondering if it was correct as well. I guess the answer is yes!
now that is weird.
I had understood that the adapter was used for cars with lower gear sets;
My car (not bought stock) has the correct plastic gear for the (standard) 3.55:1 gearing;
I found an adapter that would be perfect for retaining the original speedo gear, and the adapter would correct for my desired 3.90:1 gearing.

I would have presumed that "standard" gear set cars would not have needed any adapter.

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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)