5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

3.73's and RPM

Old 01-19-2005, 06:06 PM
  #1  
bobby
5th Gear Member
Thread Starter
 
bobby's Avatar
 
Join Date: Oct 2003
Location: Mishawaka,Indiana
Posts: 3,742
Default 3.73's and RPM

with an AOD and stock hieght tires, what will i do at 70mph or 80mph, or 60? thanks a lot!
bobby is offline  
Old 01-19-2005, 08:09 PM
  #2  
mstng675l
2nd Gear Member
 
mstng675l's Avatar
 
Join Date: Sep 2004
Location:
Posts: 334
Default RE: 3.73's and RPM

the formula is as follows rpm= (mph x overdrive trans ratio x rear end ratio x 336) / tire height. so at 60 you would be at around 1938 rpm. your overdrive should be .67 and tire height depends on brand but i estimated for a 26 inch tall tire.
mstng675l is offline  
Old 01-19-2005, 09:17 PM
  #3  
Quik
6th Gear Member
 
Quik's Avatar
 
Join Date: Nov 2003
Location: Pittsburgh, PA
Posts: 5,182
Default RE: 3.73's and RPM

use the formula but with 410s and 26' tires i was at 2500 rpms
Quik is offline  
Old 01-19-2005, 10:44 PM
  #4  
nemethjames1
4th Gear Member
 
nemethjames1's Avatar
 
Join Date: Dec 2003
Location: United States
Posts: 1,665
Default RE: 3.73's and RPM

around 2grand for doin 60 in my car give or take a few hun
nemethjames1 is offline  
Old 01-19-2005, 11:11 PM
  #5  
87mustang347
3rd Gear Member
 
87mustang347's Avatar
 
Join Date: Jun 2004
Location:
Posts: 661
Default RE: 3.73's and RPM

u get 3.73's with an aod. bad move bobby. u shooda went with 4.10's. those gears in ur car are goin to feel like 3.55's in in a 5spd.[sm=chairshot.gif]
87mustang347 is offline  
Old 01-19-2005, 11:13 PM
  #6  
nemethjames1
4th Gear Member
 
nemethjames1's Avatar
 
Join Date: Dec 2003
Location: United States
Posts: 1,665
Default RE: 3.73's and RPM

true, he shoulda went 410's[X(]
nemethjames1 is offline  
Old 01-20-2005, 12:35 AM
  #7  
bobby
5th Gear Member
Thread Starter
 
bobby's Avatar
 
Join Date: Oct 2003
Location: Mishawaka,Indiana
Posts: 3,742
Default RE: 3.73's and RPM

nah, i wanna stl be fine on the highway, wo about 2k at 60??? THANKS!
bobby is offline  
Old 01-20-2005, 12:42 AM
  #8  
nemethjames1
4th Gear Member
 
nemethjames1's Avatar
 
Join Date: Dec 2003
Location: United States
Posts: 1,665
Default RE: 3.73's and RPM

i think maybe a lil under 2k... if i recall im doin 80 at around 2500 roughly, witch aint to bad
nemethjames1 is offline  
Old 01-20-2005, 12:53 AM
  #9  
mustang8719
3rd Gear Member
 
mustang8719's Avatar
 
Join Date: Jun 2004
Location:
Posts: 937
Default RE: 3.73's and RPM

God I kinda like my 2.73's for crusing im at 2k doing 90mph
mustang8719 is offline  
Old 01-20-2005, 12:55 AM
  #10  
bobby
5th Gear Member
Thread Starter
 
bobby's Avatar
 
Join Date: Oct 2003
Location: Mishawaka,Indiana
Posts: 3,742
Default RE: 3.73's and RPM

dang are u sserious?!?!?!?! cuse as i remember when i took it out once with my dad i was doing 2k at like 70??? maybe its not shiftin into overdrive?!?!?!
bobby is offline  

Thread Tools
Search this Thread
Quick Reply: 3.73's and RPM



All times are GMT -5. The time now is 04:13 PM.