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

rpm w/373's

Thread Tools
 
Search this Thread
 
Old 09-12-2005, 02:47 PM
  #1  
TECH Apprentice
Thread Starter
iTrader: (1)
 
chev5.3's Avatar
 
Join Date: Apr 2005
Posts: 384
Likes: 0
Received 0 Likes on 0 Posts
Question rpm w/373's

Im getting ready to change the gears on my truck, its and 04 5.3, it came with the 3.42's, but it is very slow from a dig, i want to go with some 3.73's or 3.90, can some one tell me what will my rpms be more or less with the 3.73's and with the 3.90, right now i have original tires 255 70 16 (american generals), also what brand of gears, dont want something noisy, have heard good comments on Motive gears, what you all running and recommend.
Thanks in advance.
Old 09-12-2005, 03:11 PM
  #2  
TECH Addict
iTrader: (5)
 
Fogle07's Avatar
 
Join Date: Nov 2004
Location: Georgia
Posts: 2,533
Likes: 0
Received 0 Likes on 0 Posts
Default

rpms are going to be more. i believe mine are at 2000-2100 at 70 with the 3.73s and 1700-1800 when i had 3.42s. i believe im right here.
Old 09-12-2005, 04:35 PM
  #3  
TECH Fanatic
 
Gran Patron's Avatar
 
Join Date: Dec 2004
Location: Houston,Texas
Posts: 1,708
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by fogle04
rpms are going to be more. i believe mine are at 2000-2100 at 70 with the 3.73s and 1700-1800 when i had 3.42s. i believe im right here.
Right on!!!! That's what im seeing with my 3:73's!
Old 09-13-2005, 06:14 PM
  #4  
On The Tree
iTrader: (1)
 
redLS1rado's Avatar
 
Join Date: Feb 2005
Location: Houston TX
Posts: 186
Likes: 0
Received 0 Likes on 0 Posts
Default

This is the RPM calculator I use:
http://www.dalesplace.com/htm/inform...calculator.htm


4L60e Ratios:
1st- 3.06
2nd- 1.63
3rd- 1.00
4th- .70
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
BROKE-aSS-BLAZER
GM Parts Classifieds
7
10-13-2017 03:50 PM
00loudchevy
Tuning, Diagnostics, Electronics, and Wiring
3
12-03-2015 05:54 PM
Gadgetized
FORCED INDUCTION
39
10-22-2015 09:06 AM
Velocity1
INTERNAL ENGINE MODIFICATIONS
7
10-02-2015 08:01 AM
Chevy305
GMT 900 Trucks General Discussion
5
09-28-2015 09:21 PM



Quick Reply: rpm w/373's



All times are GMT -5. The time now is 12:28 PM.