F150online Forums

9.75 with 4.10's?

Thread Tools
 
Search this Thread
 
  #1  
Old 02-18-2008, 10:03 AM
shifty_85's Avatar
Senior Member
Thread Starter
Join Date: Oct 2007
Location: farmington hills, MI
Posts: 3,439
Likes: 0
Received 0 Likes on 0 Posts
9.75 with 4.10's?
i was thinking of re gearing i was wondering how a 9.75 would be with 4.10 gears? how would launchs be? and what about high way crusiing? Thanks guys
 
Reply Like
  #2  
Old 02-18-2008, 10:28 AM
tnsilverfx4's Avatar
Senior Member
Join Date: May 2007
Location: Memphis, TN
Posts: 860
Likes: 0
Received 1 Like on 1 Post
depends on your tire size bud. What do you have on there?
 
Reply Like
  #3  
Old 02-18-2008, 03:18 PM
shifty_85's Avatar
Senior Member
Thread Starter
Join Date: Oct 2007
Location: farmington hills, MI
Posts: 3,439
Likes: 0
Received 0 Likes on 0 Posts
265/75/R16 dunlap radial rovers...the truck nomraly had 235/75/R16 good years but i got the dunalps even thoe i only got 2WD
 
Reply Like
  #4  
Old 02-18-2008, 03:25 PM
tnsilverfx4's Avatar
Senior Member
Join Date: May 2007
Location: Memphis, TN
Posts: 860
Likes: 0
Received 1 Like on 1 Post
4.10's will turn those quite well.
 
Reply Like
  #5  
Old 02-18-2008, 05:37 PM
boss1984's Avatar
Senior Member
Join Date: Oct 2006
Location: fairview heights,IL
Posts: 996
Likes: 0
Received 0 Likes on 0 Posts
i have the same rear end with 4:10s.. the launches are great depening on the hp of the truck.. i have quite a bit so its hard for me to catch traction on street tires.. you will also loose some top end..it all depends on what your lookin for
 
Reply Like
  #6  
Old 02-18-2008, 06:16 PM
shifty_85's Avatar
Senior Member
Thread Starter
Join Date: Oct 2007
Location: farmington hills, MI
Posts: 3,439
Likes: 0
Received 0 Likes on 0 Posts
just want a lil bit more TQ off the line....not to worryed bout the top end my truck gov's out at 95MPH what would the RPM's be at like 70? with my 3.55's the RPMs are 2,100RPMS what would it be with 4.10's? Also should i keep the 8.8 axle and just get 4.10 gears or should i get the 9.75 axle and 4.10 gears? Thanks for all ur imput guys
 
Reply Like
  #7  
Old 02-19-2008, 02:27 PM
boss1984's Avatar
Senior Member
Join Date: Oct 2006
Location: fairview heights,IL
Posts: 996
Likes: 0
Received 0 Likes on 0 Posts
at 75mph i believe its right about 3100but thats also with 275/45/17
 
Reply Like

Trending Topics

  #8  
Old 02-19-2008, 03:51 PM
Jordan not Mike's Avatar
Senior Member
Join Date: Jul 2004
Location: The LBC (Long Beach, CA)
Posts: 1,714
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by boss1984
you will also loose some top end..it all depends on what your lookin for
I gurantee you that you didn't lost any top end, and may in fact have a higher top end with 4.10s than 3.73 or 3.55.
 
Reply Like
  #9  
Old 02-19-2008, 06:22 PM
srievley's Avatar
Member
Join Date: Jun 2007
Location: TN
Posts: 48
Likes: 0
Received 1 Like on 1 Post
RPMs
I have 4.10 gears installed with 265/70/17 tires, pretty close to the size of your tires. At 70 mph I'm about 2400 rpm, at 90 I'm around 3000 rpm. I highly recommend the 4.10 gears!
 
Reply Like
  #10  
Old 02-19-2008, 06:34 PM
electricfrank's Avatar
Senior Member
Join Date: Apr 2006
Location: Hahntown, Pa.
Posts: 127
Likes: 0
Received 0 Likes on 0 Posts
ditto
 
Reply Like
  #11  
Old 02-19-2008, 06:40 PM
stoffer's Avatar
Senior Member


Join Date: Apr 2004
Location: missing Texas...
Posts: 13,645
Received 73 Likes on 66 Posts
Originally Posted by srievley
I have 4.10 gears installed with 265/70/17 tires, pretty close to the size of your tires. At 70 mph I'm about 2400 rpm, at 90 I'm around 3000 rpm. I highly recommend the 4.10 gears!
I thought my green truck had 3.73's come to find out it has 3.55 LS but I'll be making the swap to 4.10's asap
 
Reply Like
  #12  
Old 02-19-2008, 06:42 PM
shifty_85's Avatar
Senior Member
Thread Starter
Join Date: Oct 2007
Location: farmington hills, MI
Posts: 3,439
Likes: 0
Received 0 Likes on 0 Posts
should i stick with the 8.8 diff or should i get a 9.75 diff? the 4.10's sound pretty good....shoulda had ford do this for me when i blew my diff up doing a Brake torque!! 1,100 bucks later and i got the stock 8.8 with 3.55's so should i keep the 8.8 or move up to the 9.75? thanks for all your help guys.
 
Reply Like
  #13  
Old 02-19-2008, 06:48 PM
stoffer's Avatar
Senior Member


Join Date: Apr 2004
Location: missing Texas...
Posts: 13,645
Received 73 Likes on 66 Posts
Originally Posted by shifty_85
should i stick with the 8.8 diff or should i get a 9.75 diff? the 4.10's sound pretty good....shoulda had ford do this for me when i blew my diff up doing a Brake torque!! 1,100 bucks later and i got the stock 8.8 with 3.55's so should i keep the 8.8 or move up to the 9.75? thanks for all your help guys.
get the 9.75
 
Reply Like
  #14  
Old 02-19-2008, 07:02 PM
shifty_85's Avatar
Senior Member
Thread Starter
Join Date: Oct 2007
Location: farmington hills, MI
Posts: 3,439
Likes: 0
Received 0 Likes on 0 Posts
whats so much better about the 9.75?...and how much would this cost to get a 9.75 with 4.10 gears? Thanks for all your help guys
 
Reply Like
  #15  
Old 02-24-2008, 09:05 PM
pkurek's Avatar
Member
Join Date: Feb 2008
Location: Westland, Michigan
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Get the 9.75. Bigger Gears, heavier duty. Read an article about build ups on the 9.75. They said in most cases it is as strong as a dana 60.
 
Reply Like



Advanced Search
Quick Reply: 9.75 with 4.10's?


Reply Closed Thread Share

All times are GMT -4. The time now is 01:13 AM.