NV3500 to T56 swap (T56 guys help me lol) - Page 2 - PerformanceTrucks.net Forums



GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids
Sponsored By:
Sponsored By:

NV3500 to T56 swap (T56 guys help me lol)

Reply
 
Thread Tools Search this Thread
Old 02-12-2014, 11:52 PM   #11  
Teching In
Thread Starter
 
ktharris44's Avatar
 
Join Date: Aug 2013
Location: Woodstock, Ga.
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by SYRacing View Post
im running some 275/55R-20 Yokohama Parada Spec-X XL

I wouldn't worry about tires if they are round and hold air you are in good shape....
Lol, I like your optimism. Thanks for the all the advice though guys, I'll be documenting the whole project and start a build thread at some point. But for now I'm just swapping in the 6 liter. Cross your fingers and prey for my transmission.
ktharris44 is offline   Reply With Quote
Old 02-13-2014, 12:09 AM   #12  
TECH Regular
iTrader: (3)
 
Jeebalow's Avatar
 
Join Date: Feb 2013
Location: Oregon
Posts: 400
Thanks: 0
Thanked 2 Times in 2 Posts
Default

I read a thread over on fullsizechevy of a guy running an NV3500 behind a 8.1. I think it was turbo charged too. He ran it for a couple years. He may have just gotten lucky though.

I am going from NV3500 to t56. Originally, I was keeping the NV3500 and just swapping a 5.3 into my 95 that had a 5.7. I bought all the parts and then found a t56 for cheap, so didn't use them. Let me know if you're interested in them or have questions about what I was going to use. For the t56, second gear was shot so I rebuilt the trans with Tick parts and replaced 2nd with a "viper" 2nd gear which is stronger. From 2000 up all t56 transmissions came with the viper style 2nd. So if you can, grab one of those. I also replaced the 3-4 shift fork w/ a steel one, shift pads with bronze, and 3-4 billet keys. Oh and relocated the shifter to the front inspection port so it comes out roughly where the stock shifter did using a keisler shifter relocation kit.

Last edited by Jeebalow; 02-13-2014 at 01:05 AM.
Jeebalow is offline   Reply With Quote
Old 02-13-2014, 02:20 PM   #13  
Teching In
Thread Starter
 
ktharris44's Avatar
 
Join Date: Aug 2013
Location: Woodstock, Ga.
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Default

thats another thing i forgot to ask about, do i need to buy a shifter relocation kit for a center console setup. Id like to have the shifter come out near the old hole so i can just cut it a little bigger and mock up a plate to cover what i dont need. At the same time though i can patch up any hole, im more worried about the center console working.
ktharris44 is offline   Reply With Quote
Old 02-13-2014, 05:30 PM   #14  
Teching In
 
Join Date: Jul 2013
Location: Danville, IL
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by ktharris44 View Post
thats another thing i forgot to ask about, do i need to buy a shifter relocation kit for a center console setup. Id like to have the shifter come out near the old hole so i can just cut it a little bigger and mock up a plate to cover what i dont need. At the same time though i can patch up any hole, im more worried about the center console working.
If you want the shifter to come up near the old hole is the shift relocations. How ever if you want to you the center console and have the shifter come up through the cup holder then you can leave the shifter on the t56 in the stock location. I prefer the center console look myself. I'm doing the t55 swap as well. I'm just not sure what gear I want yet. 4.88 or 4.56.
uniquesilverado06 is offline   Reply With Quote
Old 02-13-2014, 05:46 PM   #15  
Teching In
Thread Starter
 
ktharris44's Avatar
 
Join Date: Aug 2013
Location: Woodstock, Ga.
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by uniquesilverado06 View Post
If you want the shifter to come up near the old hole is the shift relocations. How ever if you want to you the center console and have the shifter come up through the cup holder then you can leave the shifter on the t56 in the stock location. I prefer the center console look myself. I'm doing the t55 swap as well. I'm just not sure what gear I want yet. 4.88 or 4.56.
I've heard a lot of complaining from the Ram guys that they are lugging the motor at 70-75 in 6th. At the same time their 305/40/22 tires are 31"ish tall with a 4.56. I'm looking at a 29-30" tire with a 4.88 with my truck. So In theory I should be able to cruise in 6th at a decent rpm doing the speed limit without lugging or downshifting for every hill.
ktharris44 is offline   Reply With Quote
Old 02-13-2014, 06:34 PM   #16  
Teching In
 
Join Date: Jul 2013
Location: Danville, IL
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by ktharris44 View Post
I've heard a lot of complaining from the Ram guys that they are lugging the motor at 70-75 in 6th. At the same time their 305/40/22 tires are 31"ish tall with a 4.56. I'm looking at a 29-30" tire with a 4.88 with my truck. So In theory I should be able to cruise in 6th at a decent rpm doing the speed limit without lugging or downshifting for every hill.
I have heard that to. I have a 275/55/r20 which is I think 30inch overall. 4.88 are probably what I will go with. I have a fbody stage 2 t56.
uniquesilverado06 is offline   Reply With Quote
Old 02-13-2014, 07:52 PM   #17  
TECH Regular
iTrader: (3)
 
Jeebalow's Avatar
 
Join Date: Feb 2013
Location: Oregon
Posts: 400
Thanks: 0
Thanked 2 Times in 2 Posts
Default

Do you have a picture of the shifter coming up through the console? I don't think I have ever seen a t56 with shifter through console. I am going with 4.88 and about 29" tire. I will be spinning slightly less RPM in sixth than I did in 5th with the NV3500. My torque multiplication in first went down very slightly from 13.75 to 12.98, but that's ok because first was almost useless before. So it should be just about right now with the new setup. Here a table of overall ratios with different transmissions and gears.

Name:  OverallRatios_zps0aa63534.jpg
Views: 497
Size:  48.5 KB
Jeebalow is offline   Reply With Quote
Old 02-13-2014, 07:57 PM   #18  
Launching!
iTrader: (2)
 
Join Date: Jul 2009
Location: Big Rock, IL
Posts: 208
Thanks: 0
Thanked 0 Times in 0 Posts
Default

i have 4.88s with my t56 and 30" tires and they are perfect. (just gotta watch your driveshaft RPM, getting pretty close to the critical speed at 100mph)

heres a pic of my center console



Ketis is offline   Reply With Quote
Old 02-13-2014, 08:13 PM   #19  
TECH Regular
iTrader: (3)
 
Jeebalow's Avatar
 
Join Date: Feb 2013
Location: Oregon
Posts: 400
Thanks: 0
Thanked 2 Times in 2 Posts
Default

That looks really good! Did you use a relocation kit?
Jeebalow is offline   Reply With Quote
Old 02-13-2014, 08:14 PM   #20  
Teching In
Thread Starter
 
ktharris44's Avatar
 
Join Date: Aug 2013
Location: Woodstock, Ga.
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Great find with that gearing chart! Like Ketis said, I've heard some safety concerns about the stock driveshaft. After the t56 goes in I'll be dropping the truck off to get a custom driveshaft made, shouldn't be any more than $500 and quick turn around from my previous experience. I know I'll end up going over 100 lol.
ktharris44 is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
4l80e accleration Go5.3tt06 GM Drivetrain & Suspension 120 09-12-2015 09:29 AM
Strange A/C problem fillpot Tuning, Diagnostics, Electronics, and Wiring 2 07-26-2015 07:21 PM
Returnless system, Walbro 450, ID1000, E85... anything wrong here? lxcoupe FORCED INDUCTION 8 07-21-2015 02:12 AM
4l80 driveshaft GM-only GM Drivetrain & Suspension 3 07-19-2015 10:48 PM
HELP NEEDED OBS LQ9 swap going into reduced engine power mode GreyChevy Tuning, Diagnostics, Electronics, and Wiring 1 07-07-2015 08:57 PM


Tags
3500, 53, built, clut, conversion, hp, life, ls, nv, nv3500, performance, put, span, srtto, swap, t56, yukon

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 06:40 PM.


© 2018 MH Sub I, LLC dba Internet Brands
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: