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Old 03-03-2007, 10:48 AM
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Is aTH200R4 transmission worth beefing up for street use?

I recently bought a 87 SS monte carlo as my new project it has aTH200R4 trans in it .It also has a3.73 rear gear and a goodwrench 350 crate motor 265hp 350ft lbs torque at 4800 rpms i would like too make this car a street/strip car i want too know if the trans will hold up under the abuse if so what would be some good mods too strengthen it up thanks.

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Old 03-03-2007, 10:51 AM
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yeah a stock motor isnt going to harm a stock tranny
put u a shift kit and a stall convertor though
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Old 03-03-2007, 04:51 PM
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The turbo Buick crowd has demonstrated that a properly built 200-4R can survive just fine behind a mid-9 second G-body.
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Old 03-04-2007, 12:06 PM
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Mid 9 second 2004R = $$$$$$$
Don't fool yourself.
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Old 03-04-2007, 02:04 PM
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Quote:
Originally Posted by Chazmac
Mid 9 second 2004R = $$$$$$$
Don't fool yourself.
First, I never said it was cheap. Second, the original question was about a street-driven car. My point was that contrary to popular opinion, a 200-4R can survive in a high perf application. If you want OD and a BOP bolt pattern, there isn't much choice. A gearvendors unit behind a TH400 isn't particularly cheap either.
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Old 03-04-2007, 02:16 PM
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My 12 flat GN/200R4 powered S-10 runs reliably with only a PTS shift kit and 0.500" boost valve. The 200R4 definitely is street reliable with only minor mods! Just be sure to deal with somebody who knows these trannies (and that includes staying away from major rebuilders). Hang out for awhile at one of the turbobuick forums and become "enlightened" about these trannies!

Russ
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Old 03-05-2007, 12:09 AM
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Quote:
Originally Posted by joe_padavano
The turbo Buick crowd has demonstrated that a properly built 200-4R can survive just fine behind a mid-9 second G-body.
You didnt answer any of the questions.
A 200R4 does take big bucks to meet the demands
stock 200R4 just caannot take the hooking of big track tires(Point Blank)
The input shaft is thinner than a 700R4 for one.
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