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Old 08-08-2005, 02:25 PM
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Strongest 6-speed either stock or aftermarket . . .

I was curious as to the best option(s) for a 6 speed manual transmission. Eventually I'd like convert my truck from an automatic to a manual. I currently am running a th-350 with 4.10 gears. Id love to keep the gears as well as have two gears of overdrive. Any thoughts on good transmission options?
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Old 08-08-2005, 03:36 PM
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What type of engine are you currently running?
What is the power output range you are hoping to obtain?
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Old 08-08-2005, 04:33 PM
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http://www.ttcautomotive.com/English/products/T-56.asp

Check here, more than strong enough.

Richard
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Old 08-08-2005, 05:06 PM
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There are a lot of companies that will sell T56's capable of 400-450 ft/lbs torque.
If you need more, G force makes an upgrade kit for the T56 that'll take even more power.

G force T56

And if you need even more than that, you can get a jerico, G force, or liberty's gears racing transmission; as long has you have a lot of money to spend.
dh
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Old 08-08-2005, 05:36 PM
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Currently the engine is a TPI 350 producing somewhere in the mid 300's for hp and probably a tad over 400ft lbs or torque. Eventually I will be building a turbocharger system for it and would like to have a transmission that will handle such power. While that probably wont be for a year or two at least, its always good to plan ahead. I plan on making 600-700hp with the turbo application.
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Old 08-08-2005, 05:42 PM
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Would it be more economical to have a T-56 rebuilt to handle higher power from the get go? Also, how is the gear ratio spacing compared to a th-350? I'd imagine it is tighter as there are more gears. I imagine this would be more beneficial for keeping the engine in its desired RPM power range.
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Old 08-08-2005, 07:31 PM
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The G-Force ratios are here:

http://www.g-forcetransmissions.com/T56Ratios1.pdf#search='T56%20ratio'

Tremec ratios are here:

http://www.ttcautomotive.com/English/products/T-56.asp

If you read the bottom of the G-Force info, you'll see the majority of the stock T-56s are a 2.66 first, which is pretty close to the TH350s 2.52 first.
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Old 08-09-2005, 07:45 PM
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strongest 6 speed

I believe Corvettes used a ZF 6 speed in the mid 90's? This transmission is supposed to be super stout.
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