Silverado, Sierra & Fullsize Pick-ups The Silverado & Sierra have been two of the best selling trucks in the US for decades, and is truly proven to be "like a rock".

2014 Chevy Silverado
Platform: Truck, GMT 400, 800, & 900

91 tranny issues

Old Apr 2, 2010 | 7:13 PM
  #1  
efxtruck's Avatar
Thread Starter
CF Beginner
 
Joined: Apr 2010
Posts: 11
Likes: 0
From: Salmon Arm BC Canada
Default 91 tranny issues

my 700r4 is now officially shot....... I was wondering if a tranny form a 1986 454 would work on my 5.7L 350
Reply
Old Apr 2, 2010 | 7:21 PM
  #2  
maxxman04's Avatar
CF Veteran
 
Joined: Dec 2009
Posts: 1,851
Likes: 3
From: kentucky
Default

it'll bolt on. it probably won't be a 700r4, it'll be th400 more than likely. if your 91 is 4wd, then the trans off 454 must be 4wd as well, 2wd must be 2wd.
Reply
Old Apr 2, 2010 | 7:30 PM
  #3  
efxtruck's Avatar
Thread Starter
CF Beginner
 
Joined: Apr 2010
Posts: 11
Likes: 0
From: Salmon Arm BC Canada
Default

Yeah they r both 4wd. Is the th400 a stronger tranny??
Reply
Old Apr 2, 2010 | 7:59 PM
  #4  
maxxman04's Avatar
CF Veteran
 
Joined: Dec 2009
Posts: 1,851
Likes: 3
From: kentucky
Default

a little bit, but it's also a power eater. the 400 is only a three speed, no 4th gear o/d. if you want strength over some economy, 400 will do.
Reply
Old Apr 2, 2010 | 8:15 PM
  #5  
efxtruck's Avatar
Thread Starter
CF Beginner
 
Joined: Apr 2010
Posts: 11
Likes: 0
From: Salmon Arm BC Canada
Default

I was told that it has o/d on the 454 tranny its from a 86 surburban so it should be a TBI system and Ive heard that some of them came with a 700r4..

Im looking for anything that will work really my truck has been parked for a while now I thought it was the rear end gears so I got them and they are in really nice shape and while i was changing them I found out it was the tranny.
Reply
Old Apr 2, 2010 | 8:18 PM
  #6  
maxxman04's Avatar
CF Veteran
 
Joined: Dec 2009
Posts: 1,851
Likes: 3
From: kentucky
Default

it is certainly possible that it's a 700r4. if it is, it's the same as the 91 700r4. gm's bolt pattern is the same on all v8's.
Reply
Old Apr 2, 2010 | 8:19 PM
  #7  
efxtruck's Avatar
Thread Starter
CF Beginner
 
Joined: Apr 2010
Posts: 11
Likes: 0
From: Salmon Arm BC Canada
Default

well fingers crossed lol r the bolt patters the same for the big blocks and the small blocks

Last edited by efxtruck; Apr 2, 2010 at 8:22 PM.
Reply
Old Apr 3, 2010 | 4:29 PM
  #8  
nauticstar87's Avatar
CF Veteran
 
Joined: Jul 2009
Posts: 1,828
Likes: 1
From: Danbury Texas
Default

The bolt patterns are teh same for BBCs, and SBCs.
Reply
Old Apr 9, 2010 | 3:54 PM
  #9  
efxtruck's Avatar
Thread Starter
CF Beginner
 
Joined: Apr 2010
Posts: 11
Likes: 0
From: Salmon Arm BC Canada
Default

is it possible to use a 700r4 from a blazer in a 1500???? Im thinking so but I'm not to sure.
Reply
Old Apr 9, 2010 | 4:32 PM
  #10  
cudablack2004's Avatar
CF Junior Member
 
Joined: Apr 2010
Posts: 49
Likes: 0
From: GLEN BURNIE, MD.
Default

or swap a t56 in it! heavy duty trans with 6 gears! unless ur not into the manual trans!
Reply

Thread Tools
Search this Thread

All times are GMT -5. The time now is 4:41 AM.