Are 3:73 posi gears common in 67 w/ 400 auto ?? - Pontiac GTO Forum
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post #1 of 2 (permalink) Old 09-07-2015, 06:42 PM Thread Starter
 
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Are 3:73 posi gears common in 67 w/ 400 auto ??

Seems like a steep gear for cruising....but nice for playing around.....don't know how the turbo 400 is geared....but with a wide ratio Muncie 4 speed ..that's a great gear ....don't yah think ??
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post #2 of 2 (permalink) Old 09-07-2015, 07:41 PM
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3.73 gears weren't offered by Pontiac for the GTO in '67. You could get 3.55's, 3.90's, or special order 4.33's. A 3.73 gear with a wide ratio Muncie would do just fine up until about 70 mph, where it would be revving like crazy. A great 'fun' gear for around-town-jaunts, not so much for road trips. I pulled the 3.36 out of my own '67 with a TH400 and swapped in a lazy 2.56 gear. Road trips are a lot of fun, now.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO General Discussion

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