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Old 05-20-2013, 10:37 PM   #20
B Barber
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Join Date: Apr 2013
Location: Baskin
Posts: 73
Re: Which tranny would be best

Unlike a lot of people, I happen to love a 700R4. A TH400 takes around 40 HP to operate, a TH350 takes around 25, and a 700R4 takes about 14. Plus, you get a 4th gear, and overdirve on top of that. So its like adding 2 more gears. They can be very well built, but you have to get the correct one to start with. Mine is out of a 93 Trans Am, with the upgraded case half. I am running a full manual reverse pattern valve body, a billet bellhousing, billet input and output shafts, billet converter, 555 boost valve, 6 pinion front planetary, 5 pinion rear planetary, plus other upgrades. Mine is guaranteed for 1000 HP. Long story short, current technology has greatly increased the potential of these transmissions, but it is not cheap. I have about 6K in mine. If I ever have to replace it, I will be going with a TH400 and a Gear Vendors Overdrive setup.
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1982 Sierra, 555 BBC, All Billet 700R4, Fab9 with 4.11's, Full 8.5 cert cage, 31x18x20 MT Sportsman S/R's on custom made 20x15 Amer. Racing Hopsters, 4-link with anti-roll bar and dual adj coilovers, Front drag shocks, Custom interior, and quite a bit more.
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