Notices
GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

4.3 Work Truck 3.42 to 3.73

Thread Tools
 
Search this Thread
 
Old 05-02-2013, 12:19 AM
  #1  
TECH Enthusiast
Thread Starter
iTrader: (68)
 
Formulized94's Avatar
 
Join Date: Nov 2004
Location: Cleveland, TN
Posts: 707
Likes: 0
Received 0 Likes on 0 Posts
Default 4.3 Work Truck 3.42 to 3.73

I read through the threads people have posted about go from 3.42 to 3.73 and they mainly consisted of 5.3l and bigger engine setups.

My work truck/dd is in need of a gear and I have a 3.73 on the shelf. Before I go set this up, I USE this truck as a truck. If I need to move something this truck gets hooked to it and moves it, car, fork lift, etc.(with in reason).

Will this 3.73 help out much with the hauling or not even be noticeable? The pos is on the road daily and I really do not want to go with 4.10's. So the question is go back with 3.42 or use the 3.73 gear.

2wd, rclb, 4.3, 4l60e, 251k miles...
Old 05-02-2013, 03:53 AM
  #2  
TECH Apprentice
 
Koots's Avatar
 
Join Date: Jul 2009
Location: Hell
Posts: 397
Likes: 0
Received 0 Likes on 0 Posts
Default

If you are going through the trouble of regearing, most will tell you to upgrade one step further and jump into 4.10, especially with the 4.3L.

BUT, if you got the 3.73 gearset just sitting there, it will definitely help out. I used to race my 98 K1500 RCLB 4.3/4L60E/3.73 gears against an identical C1500 w/3.42 gears and I would have an entire truck length on him by 40MPH every time. Even with the added wait of 4WD, the 3.73 gears made up for it in all aspects...other than maximum fuel efficiency, but I probably had him beat in city efficiency though.
Old 05-03-2013, 07:33 PM
  #3  
TECH Enthusiast
Thread Starter
iTrader: (68)
 
Formulized94's Avatar
 
Join Date: Nov 2004
Location: Cleveland, TN
Posts: 707
Likes: 0
Received 0 Likes on 0 Posts
Default

Thank you for the reply. I may have my hands on a ff 14bolt 4.10 and locker. I know it is over kill for the 4.3... however, it is cheap and I have wheels for it. Otherwise I will be setting up the 3.73 in the 10bolt.

EDIT:

Picture of ol whitey doin work!

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SLOPONY
GMT 800 & Older GM General Discussion
20
10-18-2016 06:05 AM
Noah Burns
GMT K2xx Trucks General Discussion
12
10-05-2015 06:46 AM
wrb002
PROJECTS GALLERY
18
08-31-2015 12:00 PM
black6spdz
Trucks and SUV Classifieds
9
07-16-2015 01:32 AM
Nimoryan
GMT 800 & Older GM General Discussion
0
07-05-2015 03:50 PM



Quick Reply: 4.3 Work Truck 3.42 to 3.73



All times are GMT -5. The time now is 10:54 AM.