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

swap from 200c to 700R-4

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Old May 29, 2001 | 08:28 PM
  #1  
super83Z's Avatar
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From: Brockton, MA, USA
Car: 1983 Z28
Engine: 6.6L 406
Transmission: T-56
swap from 200c to 700R-4

My friend is doing this swap and he wants to know everything he will need. this is what I told him: kickdown cable, non-locking converter or lock-up kit, driveshaft and tranny mount. Anything else?

Also will the torque arm from the 200c work with the 700R-4? thanks for any help

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I WOULD RATHER PUSH A CAMARO THAN DRIVE AN IMPORT

1983Z28 350w/ edelbrock performer RPM power package , dynomax shorty headers, 700R-4 with shift kit, 750cfm carb, edelbrock 3" exhaust system, ASCD SS hood, 16" IROC rims.

future mods:
completely done over suspension, black paint with flames, Hurst shifter, dakota digital gauge package, procharger supercharger.
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Old May 30, 2001 | 08:14 AM
  #2  
82camaro's Avatar
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Joined: Nov 1999
Posts: 2,860
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From: NE
Car: 82 camaro SC
Engine: 350
Transmission: 700r4
<font face="Verdana, Arial" size="2">Originally posted by super83Z:
My friend is doing this swap and he wants to know everything he will need. this is what I told him: kickdown cable, non-locking converter or lock-up kit, driveshaft and tranny mount. Anything else?

Also will the torque arm from the 200c work with the 700R-4? thanks for any help
</font>
Also, he may need a bracket for the TV cable linkage near the carb. The tranny crossmember was the most time consuming part of the swap. The later 700r4 has a different crossmember, but it still won't work because the holes/threads in the subframe aren't in the early third-gens. I cut and welded the th200c crossmember to make it work(the mounting point needs to be back a few inches. The Torque arm will work fine if you cut a few inches off. Make sure the 700r4 you get has the torque arm mount provisions on the tailshaft. The TV cable controls the shifts, so make sure you get that hooked up and working correctly. If you haven't already, install a vette servo while the tranny is out--it's much easier. A .5 boost valve is a good mod as well. I also installed a Megashifter. I'm sure I forgot something, just let me know.


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82 camaro--original steering wheel, brake/gas pedals, seats--everything else modified
82camaro
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Old May 30, 2001 | 06:29 PM
  #3  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I was under the impression that TH700's were available before the TH200 was discontinued, so '83-later frames had the holes for the shorter (farther back) crossmember. But, I could be wrong. I didn't have a lot of trouble getting the 700 to crossmember mount - just drilled two new holes.

Getting a TH700 torque arm would be a no-hassle way to make it work - cutting & welding the longer 200 torque arm doesn't make much sense to me, when the correct-length part should be easy to find. Same for the crossmember.

Or, get all the pieces needed from Spohn. He'll have what it takes to make it work, and they'll be better pieces than stock.

By all means, keep the lockup torque convertor! The same wires that locked up the 200C will lock up a 700.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, LT MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/95.5 @ 5800' Bandimere.
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Old May 30, 2001 | 06:30 PM
  #4  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Oh, although 82 mentioned his MegaShifter, your friend will need a different shifter & cable.
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Old May 30, 2001 | 06:52 PM
  #5  
SteveSpohn's Avatar
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From: Myerstown, PA USA
I built a few of these crossmembers and just added them as a product to the website:

https://www.spohn.net/index.cfm?fuse...t&productid=58

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Spohn Performance: F-Body Chassis/Suspension Specialists
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Old May 30, 2001 | 10:27 PM
  #6  
82camaro's Avatar
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Joined: Nov 1999
Posts: 2,860
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From: NE
Car: 82 camaro SC
Engine: 350
Transmission: 700r4
You don't have to cut and weld the torque arm. Just take a couple of inches of the front of it. Jig saw, 5 minutes with a good blade and did it on the car. He never said what year his friends car was(82 or 83). If it's an 83, I would guess in 83 that some didn't have the correct holes if it had a th200c. GM wasn't good about changing it's production(the subframe holes) exactly at the end of a production year. I know of at least one 83 th200c that wasn't 'dual pattern'. After you drilled the holes in the subframe five7kid, you had to weld up some kind of nut in the subframe right? Not saying my way is the best, but drilling the holes is just part of your method. Why modify the car when I can modify the crossmember was my thinking.
100 bucks for that aftermarket crossmember? I think I need to make a few more LOL. It must be really nice!!


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82 camaro--original steering wheel, brake/gas pedals, seats--everything else modified
82camaro
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