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-   77-81 Firebird & Trans Am TECH (https://forums.maxperformanceinc.com/forums/forumdisplay.php?f=441)
-   -   overdrive transmission ??? (https://forums.maxperformanceinc.com/forums/showthread.php?t=779215)

gtopercy 08-31-2015 02:39 PM

overdrive transmission ???
 
Looking for a 5 or 6 speed (prefer 5 speed) trans with over drive to install in my 78 Trans am. About 400 horsepower so not looking for anything built for racing, just nice cruiser ta that needs a over drive gear. Running 400 Pontiac engine with 3.42 rear gears.
What's available out there that you used ?
thanks !

Scarebird 08-31-2015 05:57 PM

430 horse LS3 with TKO-600 and 3.42, no complaints.

autobahn 09-04-2015 10:04 PM

I put in a TREMEC 5 speed in my 78 TA and I love it

gtopercy 09-04-2015 10:15 PM

Thanks, I think I will go with a tremec 5 or 6 speed.

Alvin 09-04-2015 10:43 PM

Couldn't find exact details for you; but helped Project Manage a Richmond 6-Speed install into a '80 TA behind a '71 455 HO and can't remember what the 3rd member gearing was...but basically was a parroting of a '80s HPP '79 TA build called "Six Shooter" w same drivetrain.

Drove the car and can tell you passed 5 to 6 cars like was on a Sportbike...

FWIW - The mods to car were minimal, IIRC 2 holes cut into subframe (to relocate trans mount) minor Trans tunnel massage with rubber mallot & hammer...turned out a really nice balanced vehicle.

IIRC - Car was supposed to be painted Brewster Green but ended up w paint code 26(?) Metallic Blue w a Green tint? Was a real nice ride... :thumbup:


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