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700 in 81 vette ???

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Old Apr 6, 2011 | 06:22 PM
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Default 700 in 81 vette ???

Hi All

My cousin is making me a bullet proof 700-r4 that I am going to put into my 1981 corvette.

I have done a search and found that you need the x-member from BowTie Overdrive, a shortened driveshaft, a lock up soloniod and tv cable bracket to fit the carb.

My cousin says I need a different output shaft and tail shaft for this to fit my car but in my searchs there have been no mention of this???

Is my cousin correct?? Am I missing this in my searches??

Thanks

Jarred.
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Old Apr 7, 2011 | 12:31 AM
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Originally Posted by jarredsoon
Hi All

My cousin is making me a bullet proof 700-r4 that I am going to put into my 1981 corvette.

I have done a search and found that you need the x-member from BowTie Overdrive, a shortened driveshaft, a lock up soloniod and tv cable bracket to fit the carb.

My cousin says I need a different output shaft and tail shaft for this to fit my car but in my searchs there have been no mention of this???

Is my cousin correct?? Am I missing this in my searches??

Thanks

Jarred.
If I remember correctly the TH 350 and 700 R4 use the same Yoke or output shaft. The Stock X Member can be used if your willing to modifiy the Mount a bit, it dosn't take much.
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Old Apr 7, 2011 | 09:25 AM
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The output yoke is the same for th350, and 700r4. The drive shaft will need to be shortened about 3", shifter detent modified for the overdrive gear.

I wish you luck. I went through two "bullet proof" 700r4's in a year, then went to my th400. If you think you need bullet proof,.....you might want to consider a different option.My 406 only puts out around 540 horsepower,...which by todays standards isn't a lot of power.
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Old Apr 7, 2011 | 10:05 AM
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We just installed a 700r4 in a 1975.
The builder put a camaro tail shaft on it and all we had to do was elongate the mounting holes in the original crossmember to bolt it up.
Driveshaft was also shortened.
david
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Old Apr 7, 2011 | 11:06 AM
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An 82 would provide all the parts you need. Got a Corvette salvage yard near you?

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Old Apr 7, 2011 | 11:16 AM
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700R4 transmissions come in several configurations. Some have longer tailshafts/housings than the version that was installed in the ['82 & later] Corvette. Since the output shaft is part of the basic assembly, it and the rear housing will have to be changed to make it work....or, just get one that fits in the first place.
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Old Apr 7, 2011 | 12:25 PM
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Originally Posted by jarredsoon
bullet proof 700-r4
There is no such animal
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Old Apr 7, 2011 | 01:19 PM
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my tail shaft from the th350 worked.....you may want to consider the shift detent , and the B&M speedometer controlled lock up. the B&M speed controlled lock up prevents you from being in 4th gear at too low of an RPM and lugging the engine while in lock up
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Old Apr 7, 2011 | 04:56 PM
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thanks for the replies,
my motor is only 420 hp and 470 tq so this trans should be great.

So I use the tail shaft from my th350 and the output shaft that comes with the 700 right??

Thanks
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