Go Back   Chevy Truck Forum | GMC Truck Forum - GmFullsize.com > General > Classic GM


Classic GM Discuss pre-88 trucks and SUV's here.


User Tag List

Reply
 
Thread Tools
Old 01-31-2011, 01:25 PM   #1
dhchip10
New Member
 
dhchip10's Avatar
 
Join Date: Oct 2010
Location: Canada
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Default 4bt cummins swap

Hey guys I was wondering if anyone has done or considered doing a 4bt cummins swap. I have read on a bunch of pople who have done this in my era of truck and it seems pretty easy. If you have what tranny would you recomend?


__________________
1981 GMC Sierra Classic. 4 inch lift, 35 inch BFG Mund Terrains. (Sold). 2001 Chevy 1500 4x4 285/75/R16 Cooper S/T Maxx. Fully Loaded. Line-X bedliner.
dhchip10 is offline   Reply With Quote
Old 01-31-2011, 01:33 PM   #2
GCncsuHD
ΜΟΛΩΝ ΛΑΒΕ
 
GCncsuHD's Avatar
 
Join Date: Feb 2006
Location: Salisbury, NC
Age: 27
Posts: 8,504
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Default Re: 4bt cummins swap

I've looked into it, the bread truck 4bts usually come bolted to a TH400, a common swap is to put a 700r4 behind it for the OD.
__________________

ΜΟΛΩΝ ΛΑΒΕ

SOLD: 2001 Chevrolet 2500HD 6.0 8" 5.13s 38s
1978 K30 Dually
1967 C10 5.3 LM7 3 On the Tree
1969 K5 Blazer work in progress
2000 Ford F250 RCLB 7.3 6spd


Originally Posted by GCncsuHD View Post
Originally Posted by 2005_Silverado View Post
Friends don't let friends make grammatical errors.
Only because we are friends.
GCncsuHD is offline   Reply With Quote
Old 01-31-2011, 02:18 PM   #3
Jared
Banned From GMFS
 
Join Date: Nov 2005
Location: North Texas
Age: 29
Posts: 6,338
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Default Re: 4bt cummins swap

IIRC there was a member here who was bagged with a 4 or 6bt.
Jared is offline   Reply With Quote
Old 02-10-2011, 05:19 AM   #4
Joakwin
layin big rubber
 
Joakwin's Avatar
 
Join Date: Jan 2004
Location: england, uk
Age: 33
Posts: 1,238
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Default Re: 4bt cummins swap

my dad did one,84 1/2 ton single cab, turbo/innercooled 4bt and he used a ford 5speed manual box at 1st with a d60 rearend, and then later on swapped in a turbo 400 with a gear vender overdrive
__________________
1984 rhd mini Cooper, kenwood x693 deck,
mb quart 1500.1, mb quart 2ch amp, mb quart 6.5 comps, Honda D16z6 itb, lsd, S300 tune, mini tec beam axle..... 150whp/1500lb car
6point roll cage, fiberglass front clip, doors, trunk lid, de-seamed, shaved roof rain gutter, 10gal RCI fuel tank.....
Joakwin is offline   Reply With Quote
Old 03-21-2011, 11:29 PM   #5
Ziegelsteinfaust
GMFS Member
 
Ziegelsteinfaust's Avatar
 
Join Date: Jan 2009
Location: Chino Hills
Posts: 349
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Default Re: 4bt cummins swap

4bt swaps.com

It looks neat, and a great idea. Just diesel scares me for some reason.

I know its stupid.
__________________
Sitzungstiefpunkt und fahrend langsam
Ziegelsteinfaust is offline   Reply With Quote
Old 03-22-2011, 03:02 PM   #6
4BT
Banned From GMFS
 
Join Date: Mar 2011
Location: here
Age: 33
Posts: 174
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Default Re: 4bt cummins swap

4btswaps.com and search around the buildup threads for some 73-87 and 88-98 swaps. Pretty straightforward swap since most breadtrucks ran GM accessories and a TH400 based transmission (TH475)
4BT is offline   Reply With Quote
Old 03-24-2011, 06:52 PM   #7
nekkidhillbilly
professional smartass
 
nekkidhillbilly's Avatar
 
Join Date: Jul 2004
Location: hazard,ky
Age: 33
Posts: 5,484
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Default Re: 4bt cummins swap

Originally Posted by Ziegelsteinfaust View Post
4bt swaps.com

It looks neat, and a great idea. Just diesel scares me for some reason.

I know its stupid.
big boogie diesel man
__________________
04 dmax cc sb white 4x4
66 buick gs
2012 kia sorento sx silver
1999 ford f150 xl blue
1989 dodge spirit blue
1983 buick lesabre white

http://smg.photobucket.com/albums/v237/nekkidhillbilly/

the anti og og guy
nekkidhillbilly is offline   Reply With Quote
Old 03-29-2011, 04:47 PM   #8
GMC85Diesel
Diesel Chick
 
Join Date: Mar 2011
Location: Dallas Oregon
Posts: 7
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Default Re: 4bt cummins swap

the diesels don't scare me I actually prefer them. I've considered dropping a 4bt into my 85 1/2 ton, and most likely will if/when my 6.2 gives out. my dad does a lot with the 5.9 (6bt) engines. I would personally stick with a NV4500 trans, but make sure you get one with a new drive shaft in it because of the 5th gear problem, fix that and it's a perfect 5 speed manual!
__________________
1985 GMC Shortbox 4x4 6.2L Diesel NV4500, custom transfercase, HX35 turbocharged, 4" lift, 15x12.5 33's Toyo MT's. rebuilt engine myself, did I mention im a GIRL?

Got me a great Truck lovin boyfriend, he loves the Dodges with Cummins.

Check out my blog for more pictures and an occasional update on my projects!!

www.nickistrucks.blogspot.com
GMC85Diesel is offline   Reply With Quote
Reply

Bookmarks




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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

Forum Jump

 

Latest Threads
- by Chris12
- by tylerj
- by Cornell
- by Cone426
- by Skalade