Help with "Street" Posi and Gear - Pontiac GTO Forum
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post #1 of 2 (permalink) Old 03-21-2018, 09:47 AM Thread Starter
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Help with "Street" Posi and Gear

Hello - First time post. I have a 1967 LeMans that has been a drag car since the mid 80's. I want to make a prostreet car out of it so I am making the transition. It currently has a Dana 60 with a spool and 4:88 pro gear. It seems like there are many options for a posi rear end and I don't know where to start. Here are the specs on the car - 1967 LeMans, 502" BBC (600ish hp), TH400, Narrowed Dana 60, 31X16.5 M/T tires. I would appreciate any suggestions for a posi carrier for my Dana 60. Also, suggestions for a gear would be great too. This will be a car that mostly goes to shows with the occasional 1/8mi full throttle release of aggression . Thank you.
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post #2 of 2 (permalink) Old 03-21-2018, 03:06 PM
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Dana60 application Eaton True-Trac, part #915A385 fits 4.10 & numerically lower gears (3.54's)
your Dana60 axles should be 35 spline, I have no idea what style of outer axle bearing/retention when your rear was constructed.
Personally, in other than putt around street builds, I prefer large diam tapered bearing axle retention, either A10 or A20 tapered axle bearings/hsg ends.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Undercarriage, Frame, Transmission and Differential Discussions.

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