700r4 question - Team Camaro Tech
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post #1 of 6 (permalink) Old Jan 6th, 01, 12:24 AM Thread Starter
Join Date: Jan 2001
Location: Richmond virginia usa
Posts: 1

I am building up my vette so I am using many of the parts in my daily driver. It is a 78 GMC 4x4. New 355 SB Mild Cam (bullet 280) L88 heads 750 holley headers 9.5:1 cr. My question is what will have to be changed/ modified, if anything, to put the old 86 700r from my vette (just brought the thing couple years ago)in my 4x4. Can I do it, should I do it? I really like the OD. Suggest t-converter etc.
tonysparks is offline  
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post #2 of 6 (permalink) Old Jan 6th, 01, 05:29 AM
Join Date: Jan 2001
Location: Moscow, Idaho, USA
Posts: 3

I would suggest a good rebuild. I've had really good luck putting a heavy duty clutch pack between 3-4 gears, putting a high rev spring kit in, a good shift kit will help, and you'll need a lockup kit to make the lock up converter work right. The last time I had all this done it ran me $800 and I havn't had any problems. The 700-R4 is more than enough tranny to hold a wild small block if they are modified correctly.
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post #3 of 6 (permalink) Old Jan 6th, 01, 05:31 AM
Join Date: Jan 2001
Location: Moscow, Idaho, USA
Posts: 3

Sorry, I don't know how it will hook up with your transfer case or if it even will.
Matthew Baker is offline  
post #4 of 6 (permalink) Old Jan 6th, 01, 09:21 AM
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Join Date: Dec 2000
Location: Monroe, WA, USA
Posts: 312

to put it on your 4wheeler you need to have the right tail shaft put in it..a very short one iff you tak the one out of your rig now i belive it is a THM350 the 700R4 should just bot up to teh tranfercase adaptor, you might have to moove it back a few inches. other than that you will need a T.V cable and 700R4 wire kit from some one..they run around 100 buck's, oh and a bvraket for the T.V. cable...hope this help's.
ilbl8 is offline  
post #5 of 6 (permalink) Old Jan 6th, 01, 04:00 PM
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Join Date: Jun 2000
Location: LaGrange,Il
Posts: 1,026

The Corvette transmission case does not have a pad for a rear trans mount. I'm not sure but if the 4x4 mount is on the transmission, or transfer case. If it is on the trans, the the Vette trans won't work.

Mat Klemp is offline  
post #6 of 6 (permalink) Old Jan 6th, 01, 07:47 PM
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Join Date: Aug 2000
Location: Ft Worth, Tx USA
Posts: 288


The 700 will fit, and has already been said the 4x4 takes a shorter output shaft. The case of the 700 is longer than the 350 so it takes a different adapter for the transfer. the one from the 350 will bolt on but the drive shafts won't fit and the output shaft will be to short to spline into the transfer. Call the local dealer and get the adapter from them. Ask for 1982 up 4x4 700R4 transfer adapter.

Also 86 is the last year that you can lock it up w/out electrical. This tranny can be locked up hydraulic.

Get the vette converter rebuilt, or one like it, they are around 2200/2400 as are. I use these, and my converter man furnace brazes them, and adds the late converter clutch.

lnjstreetrods is offline  
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