MPT W/ 35” tire and 331 rear end - Ford F150 Forum - Community of Ford Truck Fans

Topic Sponsor
Performance, Tuning, and (LEGAL) Racing Post discussions about increasing performance, capabilities, and racing. ****WARNING**** Street racing or illegal activities will be removed and potential bans will be handed out.

MPT W/ 35” tire and 331 rear end

 
Old 02-01-2019, 09:01 PM
  #1  
Senior Member
Thread Starter
 
mmwest's Avatar
 
Join Date: Dec 2012
Location: Houston
Posts: 400
Thanked 30 Times in 28 Posts
Default MPT W/ 35” tire and 331 rear end

About to pull the trigger on a 4” lift and I’m trying to decide if I can run 35” tires with 331 rear end gear set up. Will be installing the SCT tuner with MPT tunes. I really don’t wanna go down to a 34” tire. Anyone have any info on a set up like this ?thanks in advance

mmwest is offline  
Old 02-01-2019, 09:13 PM
  #2  
Senior Member
 
blue5.0's Avatar
 
Join Date: Apr 2016
Posts: 1,380
Thanked 137 Times in 123 Posts
Default

Originally Posted by mmwest
About to pull the trigger on a 4” lift and I’m trying to decide if I can run 35” tires with 331 rear end gear set up. Will be installing the SCT tuner with MPT tunes. I really don’t wanna go down to a 34” tire. Anyone have any info on a set up like this ?thanks in advance

With no lift and running 31.9" tires (275/55/20) I felt it necessary to go to 4.10's. I have a 13 5.0. I don't know your setup. Just my little bit of insight
blue5.0 is offline  
Old 02-01-2019, 09:19 PM
  #3  
Fleet Technician
 
Rnlcomp's Avatar
 
Join Date: Feb 2013
Location: Big Easy
Posts: 22,259
Thanked 4,406 Times in 3,469 Posts
Default

Originally Posted by mmwest View Post
About to pull the trigger on a 4” lift and I’m trying to decide if I can run 35” tires with 331 rear end gear set up. Will be installing the SCT tuner with MPT tunes. I really don’t wanna go down to a 34” tire. Anyone have any info on a set up like this ?thanks in advance


That is exactly what I'm running.





I've been running an MPT 93 race tune daily for a couple years now. Couldn't be happier except when I fill up with E85 lol. Just a little more kick from the butt dyno on alcohol.
.
Rnlcomp is offline  
Old 02-02-2019, 01:51 PM
  #4  
Senior Member
Thread Starter
 
mmwest's Avatar
 
Join Date: Dec 2012
Location: Houston
Posts: 400
Thanked 30 Times in 28 Posts
Default

I’ve been checking out your reply’s and truck for a while now and figured we’d say “ what’s up” pretty soon. I like your truck BTW
mmwest is offline  
Old 02-02-2019, 01:52 PM
  #5  
Senior Member
Thread Starter
 
mmwest's Avatar
 
Join Date: Dec 2012
Location: Houston
Posts: 400
Thanked 30 Times in 28 Posts
Default

Your tires are 34” or 35”?
mmwest is offline  
Old 02-05-2019, 06:56 PM
  #6  
Senior Member
 
KineKilla's Avatar
 
Join Date: Jan 2016
Location: WJ, Utah
Posts: 130
Thanked 11 Times in 8 Posts
Default

Mine also wears 35” and has the 3.31 rear. I’ve been running the MPT 91perf/Tow tune for a while. Been thinking of trying another tuner lately but haven’t yet.
KineKilla is offline  
Old 02-07-2019, 10:00 PM
  #7  
Senior Member
Thread Starter
 
mmwest's Avatar
 
Join Date: Dec 2012
Location: Houston
Posts: 400
Thanked 30 Times in 28 Posts
Default

How’s it run with 35” concerned about shift points but guess I can get that adjusted with the tune.
mmwest is offline  
Old 02-07-2019, 10:19 PM
  #8  
Senior Member
 
KineKilla's Avatar
 
Join Date: Jan 2016
Location: WJ, Utah
Posts: 130
Thanked 11 Times in 8 Posts
Default

If you run their prx tune, you’ll likely never want to use a different tune. Even with the perf/Tow tune running it wants to spin tires in the first two gears of you put your right foot into it.

You can usually get it with the stock shift points instead if you want.
KineKilla is offline  
The Following User Says Thank You to KineKilla For This Useful Post:
mmwest (02-08-2019)
Old 02-08-2019, 12:50 AM
  #9  
Senior Member
 
Sirikenewtron's Avatar
 
Join Date: Jan 2015
Location: Earth
Posts: 2,122
Thanked 221 Times in 204 Posts
Default

Originally Posted by KineKilla View Post
Mine also wears 35” and has the 3.31 rear. I’ve been running the MPT 91perf/Tow tune for a while. Been thinking of trying another tuner lately but haven’t yet.
Highly recommend 5 star, I use to run MPT prx. 5 Star has really stepped up their game in the past year or two.
Sirikenewtron is offline  
The Following User Says Thank You to Sirikenewtron For This Useful Post:
mmwest (02-09-2019)
Old 02-09-2019, 03:46 PM
  #10  
Senior Member
 
LiftenW8ts's Avatar
 
Join Date: Jul 2016
Location: South Shore Ky
Posts: 134
Thanked 7 Times in 7 Posts
Default

MMWEST I would high recommend you upgrade your front and rear differential gears from the 3:31 to at least 4:10. It makes a huge difference in how the truck will feel and accelerate. Pluss it will improve your gas mileage too. I am on a 6 inch lift with 35x12.5x20 and I am running 4:56 and the truck is a beast thru the first 3 gears. if I had it to do over I would have went with 4:10 due to the fact that I will going forced induction here in the spring.
LiftenW8ts is offline  

Thread Tools
Search this Thread
Quick Reply: MPT W/ 35” tire and 331 rear end


Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: