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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: chrpmaster on March 16, 2009, 04:40:21 pm

Title: transmission swap
Post by: chrpmaster on March 16, 2009, 04:40:21 pm
I was wondering how many problems I would cause for myself if I put a 700r4 from an 82 4 wd on my 76 c-10 2wd?
Title: Re: transmission swap
Post by: Captkaos on March 16, 2009, 04:47:44 pm
You would have to tear the 700R4 completely down to swap a 2WD output shaft.
Title: Re: transmission swap
Post by: chrpmaster on March 17, 2009, 09:50:16 pm
Does anyone have diagrams of the 2wd and 4wd.  I am trying to understand the difference between them.

Sorry for the newbie questions
Title: Re: transmission swap
Post by: Blazin on March 17, 2009, 09:56:25 pm
The same except the output shaft is shorter on a 4x4 trans.
Title: Re: transmission swap
Post by: werewolfx13 on March 18, 2009, 12:17:06 am
Swapping output shafts isn't hard if you have a clutch press and know your way around a transmission at least a little bit. Going that far into it, I'd rebuild it and do the much needed mods.
Title: Re: transmission swap
Post by: chrpmaster on March 18, 2009, 08:11:11 am
I found a 700r4 from a 2 wd s10 blazer on Craigslist.  Supposedly it was recently rebuilt.  Would that be the same as one for the full sized pickup?
Title: Re: transmission swap
Post by: 406 Q-ship on March 20, 2009, 01:39:01 am
The S10 has to be from behind a 4.3 V6, the other V6 uses a different bellhousing pattern.  All the 700r4 will bolt in to a truck, the TH350 with a middle lenght tailhousing uses the same driveshaft.  A 700 from about 88 to 92 are the better choice, they have the best interials for the last of the non-electronic 700's.  I got my 700r4 out of a 1991 G10 van and slipped it in an afternoon, my 74 truck had the middle lenght tailhousing so it was a simple trans swap.  Oh yea I had to modify the shifter linkage slightly to get to smoothly go through the gears, I bet the later trucks the shifter linkage will work fine without mods cause these trucks got the 700 in 84.
Title: Re: transmission swap
Post by: chrpmaster on March 20, 2009, 08:20:27 pm
The same except the output shaft is shorter on a 4x4 trans.

Couldn't I just use the drive shaft from the donor truck?