Transmissions and Drivetrain Need help with your trans? Problems with your axle?

700-r4 to 350

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Old 01-20-2005, 12:07 PM
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700-r4 to 350

Alright I have an 86 camaro with a 700-r4 transmission thats going out. I know a guy who is willing to give me a 350 trany, I dont really know anything about transmissions and I was wondering how hard it would be to switch it over. I have found this kit Trany kit and I would like to know if that has everything I need to install the 350?

Thanks
Old 01-21-2005, 12:27 PM
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Car: '86 Camaro, '02 WRX, '87 K5, '67
Engine: 350 TPI, 2.0turbo, 383 in the works, 289-4BBL, 232, A-head 4-cylinder
Transmission: T56, 5-speed, 700R4, C4, T176, semi-auto 2-speed
Axle/Gears: 3.73, 3.90, 4.88, 3.55, 3.54, 7.00
The link doesn't work. You need a new crossmember & TA to work with it that moves the TA off the trans and onto the crossmember. Your driveshaft will be too short, so you'll need a new one. Those are the biggest obstacles.
Old 01-21-2005, 12:57 PM
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Car: 96 impala
Engine: LT1
Transmission: 4L60e
You should only get the 350 or 400 tranny if your are punchnig out more than 400-500 horses to the wheels. Choose a tranny That can handle your powerband.
Old 01-21-2005, 01:01 PM
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Car: '86 Camaro, '02 WRX, '87 K5, '67
Engine: 350 TPI, 2.0turbo, 383 in the works, 289-4BBL, 232, A-head 4-cylinder
Transmission: T56, 5-speed, 700R4, C4, T176, semi-auto 2-speed
Axle/Gears: 3.73, 3.90, 4.88, 3.55, 3.54, 7.00
I'd run a 700R4 or a Th350 before I'd ever run a TH400, unless I really needed one. TH400s suck up a huge amount of power compared to either the TH350 or 700R4. The TH400 is strong enough stock to take a big block, so if all you've got is a small block it's total overkill.
Old 01-22-2005, 05:29 PM
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thanks for the replies. Im just looking for the cheapest way to get the trany fixed, and I figured it would be cheaper to get one for free then have the 700-r4 rebuilt, whiched Im told will cost around $1000.
Old 01-22-2005, 06:03 PM
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Car: 1991 Trans AM GTA
Engine: 5.7L TPI
Transmission: 700R4
Originally posted by TKOPerformance
Your driveshaft will be too short, so you'll need a new one.
That statement is not totally accurate. If you get a TH350 with the 6" tailshaft then yes the driveshaft will be too short, but if you get one with a 9" tailshaft the stock driveshaft will work.
Old 01-22-2005, 07:51 PM
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Car: 91 Camaro RS
Engine: SBC
Transmission: 700r4
Bottom line is that the expense of the TH350 conversion would prolly cost you close to what you would spend for stock rebuild of your 700r4. You would also have alot more work than a simple trans swap...its not the easiest solution by far. A better option would be to buy a used 700r4 or find someone to rebuild yours at a reasonable price. If ya shop around Im sure thier are places in your area that do rebuilds for less than a 1000.00. Hell my fully built 700r4 only cost me 1210.00 to have done.
Old 01-22-2005, 08:05 PM
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Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
Originally posted by BaddAzzRS
Bottom line is that the expense of the TH350 conversion would prolly cost you close to what you would spend for stock rebuild of your 700r4. You would also have alot more work than a simple trans swap...its not the easiest solution by far. A better option would be to buy a used 700r4 or find someone to rebuild yours at a reasonable price. If ya shop around Im sure thier are places in your area that do rebuilds for less than a 1000.00. Hell my fully built 700r4 only cost me 1210.00 to have done.
the kit that he is talking about in the original post is one that you reuse the original tailshaft housing from the 700r4 with the torque arm mount on it....and install a tailshaft from a 700r4 into the th350 to make it all work then the driveshaft doesnt need to be cut or replaced or changed at all....heres a pic of this kit installed on my brothers car...

and this kit can be had for around $125
Attached Thumbnails 700-r4 to 350-tailshaft.jpg  
Old 01-22-2005, 08:57 PM
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Car: 89 Camaro RS
Engine: sbc 400
Transmission: th350
being someone who has done this, its not expensive or difficult to change to a th350 if its the longer tailshaft. both b&m and hurst make a kit that costs around $100 that lets you use your stock crossmember and your torque arm. not expensive at all.
Old 01-22-2005, 09:03 PM
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Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
Originally posted by CAMp3RO
being someone who has done this, its not expensive or difficult to change to a th350 if its the longer tailshaft. both b&m and hurst make a kit that costs around $100 that lets you use your stock crossmember and your torque arm. not expensive at all.
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