Now I am thinking I should have got a lockup style. Although my tranny came from gm as a non-lockup. Didn't it? 87' IROC

Mine did. Yours should have been if it's an OD trans. But if your computer is disconected, it will not work unless you ground out pin F i think.

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89 RS Conv 305 700R4
85HO heads
Edelbrock intake
Holley 600
Hedman Hedders and Y pipe
Flowmaster
B&M MegaShifter

I believe all the 700r4s from the factory came w/ a lockup feature. I know my 85, 86, and 87 have all had it stock. And I'm not sure if it is not really a function of the tranny so much as what torque converter you have, as you can buy lockup or non-lockup TCs for the 700r4. Maybe I'm wrong there, I'm not up on trannys that well... After I ditched the computer and injection on my 87 Z I just simply run a little TCI vacuum switch setup that locks up the TC in OD.

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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray

[This message has been edited by Ray87Z (edited March 29, 2001).]

All TH700R4 transmissions had a lockup TC from the factory.

Whether it worked when you got the vehicle with that tranny is another question entirely. Mine didn't (still doesn't - I'm working on it...).

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 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/LB9 block, ZZ3 cam and intake, TBD heads, Hooker headers & y-pipe, 3" Catco cat).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.