Which rear end??? - Ford F150 Diesel Forum
 2Likes
Reply
 
LinkBack Thread Tools
post #1 of 14 (permalink) Old 04-13-2019, 10:29 PM Thread Starter
Junior Member
 
Join Date: Mar 2019
Posts: 19
Which rear end???

Iím just curious which rear end is in these trucks with the 3.0? My 5.0 and 2.7 had the 8.8Ē, but most of the 3.5 EBs Iíve seen had the 9.75Ē rear.
I havenít even looked yet, but itís late and Iím curious. LOL
Meek One is offline  
post #2 of 14 (permalink) Old 04-14-2019, 01:58 AM
Member
 
Join Date: Apr 2019
Posts: 35
I researched* this quite a bit on f150forum looking for verification that all 9.75 rear ends are 3.73/1 and all 3.73/1 are 9.75 and I could not find a counter example for the gas engines. Each time I build a truck with a 3.0 on Ford.com I cannot chose 3.73 ratio; if the data for the gassers hold, then all diesel engines have an 8.8 inch rear end.

*by research I mean I solicited input from the forum crowd. I read the sales guides too, but couldn't find a black and white answer, thus all that I have is anecdotal.
snowshew is offline  
post #3 of 14 (permalink) Old 04-14-2019, 10:19 AM
Super Moderator
 
Join Date: Oct 2018
Location: Cypress, TX
Posts: 683
8.8 on left / 9.75 on right. They both have 12 bolts. You can tell you have a 9.75 by the shape.
Attached Images
File Type: png 8_8_vs_9_75_70a57058aad9991b4799f82699eb20506d3f6878.png (435.2 KB, 23 views)

2018 Ford F-150 King Ranch 3.0L Power Stroke 4x4 | Icon 2.5 Front & 2.0 Rear, Toyo AT II 295/60R20, 3" ProComp Rear Block, S&B Dry CAI, LineX & BakFlip MX4, BuiltRight Seat Release | ForScan Mods: Disable Double Honk, 2x Panic, DPF Full %, Digital Temps Above Gauges, A.S.S Disabled | HP Tuners/nGauge, EzLynk, Ford VCM II, OBDLink MX+
wreedsvt is offline  
 
post #4 of 14 (permalink) Old 04-14-2019, 10:19 AM
Super Moderator
 
Join Date: Oct 2018
Location: Cypress, TX
Posts: 683
My truck has the 9.75

2018 Ford F-150 King Ranch 3.0L Power Stroke 4x4 | Icon 2.5 Front & 2.0 Rear, Toyo AT II 295/60R20, 3" ProComp Rear Block, S&B Dry CAI, LineX & BakFlip MX4, BuiltRight Seat Release | ForScan Mods: Disable Double Honk, 2x Panic, DPF Full %, Digital Temps Above Gauges, A.S.S Disabled | HP Tuners/nGauge, EzLynk, Ford VCM II, OBDLink MX+
wreedsvt is offline  
post #5 of 14 (permalink) Old 04-14-2019, 10:54 AM
Member
 
Join Date: Mar 2019
Location: Calgary, Alberta
Posts: 58
My truck with the 3.55/1 electronic lock axle has the 9.75 rear end.
Laytunes is offline  
post #6 of 14 (permalink) Old 04-14-2019, 05:38 PM
Member
 
Join Date: Apr 2019
Posts: 35
Wow, good to know!


How the heck does someone ensure that he would get the 9.75, then? They are both fine, but if a person expected one versus the other it would be unfortunate to be surprised/disappointed on delivery day.
snowshew is offline  
post #7 of 14 (permalink) Old 04-14-2019, 06:46 PM
Super Moderator
 
Join Date: Oct 2018
Location: Cypress, TX
Posts: 683
Quote:
Originally Posted by snowshew View Post
Wow, good to know!


How the heck does someone ensure that he would get the 9.75, then? They are both fine, but if a person expected one versus the other it would be unfortunate to be surprised/disappointed on delivery day.
I doubt the 3.0 comes with anything but the 9.75, but be sure to ask dealer!

2018 Ford F-150 King Ranch 3.0L Power Stroke 4x4 | Icon 2.5 Front & 2.0 Rear, Toyo AT II 295/60R20, 3" ProComp Rear Block, S&B Dry CAI, LineX & BakFlip MX4, BuiltRight Seat Release | ForScan Mods: Disable Double Honk, 2x Panic, DPF Full %, Digital Temps Above Gauges, A.S.S Disabled | HP Tuners/nGauge, EzLynk, Ford VCM II, OBDLink MX+
wreedsvt is offline  
post #8 of 14 (permalink) Old 04-14-2019, 06:57 PM
Super Moderator
 
Join Date: Oct 2018
Location: Cypress, TX
Posts: 683
According to this 8.8 not even used anymore. Everything is the 9.75
Attached Images
File Type: png Capture.PNG (66.9 KB, 21 views)
kdjasper and Dunrollin like this.

2018 Ford F-150 King Ranch 3.0L Power Stroke 4x4 | Icon 2.5 Front & 2.0 Rear, Toyo AT II 295/60R20, 3" ProComp Rear Block, S&B Dry CAI, LineX & BakFlip MX4, BuiltRight Seat Release | ForScan Mods: Disable Double Honk, 2x Panic, DPF Full %, Digital Temps Above Gauges, A.S.S Disabled | HP Tuners/nGauge, EzLynk, Ford VCM II, OBDLink MX+
wreedsvt is offline  
post #9 of 14 (permalink) Old 04-14-2019, 09:25 PM Thread Starter
Junior Member
 
Join Date: Mar 2019
Posts: 19
Mine has the 9.75Ē

Mine does have the 9.75, but Iím pretty sure the 5.0 I was looking at had the 8.8.
Attached Images
File Type: jpg 97035C4A-208F-4EEB-B569-8E50E4A1D081.jpg (152.0 KB, 18 views)
Meek One is offline  
post #10 of 14 (permalink) Old 04-30-2019, 05:59 PM
Member
 
Join Date: Apr 2019
Posts: 35
Hello,


Slightly hijacking this thread I suppose, but it is a similar topic.




I'm trying to decide on a gear ratio, and since I won't be able to test drive each under various conditions (towing, highway cruising, etc.) I am wondering if there is a consensus on which one is best. The most I will pull is 7500 lbs. and I am fine with locking out 10th or 9th if I need to, or if the transmission moves around a bit under that kind of a load, however, when not pulling I would prefer the truck hold in 10th as much as possible on the highway. I rarely go faster than 70, but don't want to have the engine at faster than needed on the highway, either.


Basically would either ratio serve me fine, or if I were to err to one side or the other, which one should it be?


I am leaning towards the 3.55 but I am coming from V8s where the revs were more beneficial.


Thanks,
snowshew is offline  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Weathertech mudflaps psatala Exterior 17 08-21-2019 10:59 PM
Interior Cabin Road Noise kdjasper Interior 3 08-11-2019 10:45 PM
Factory Funnel TxBriley 2018+ F150 Diesel General Discussion 19 03-27-2019 11:52 PM
F-150 3.0 Rolls Forward in Park Stingray 2018+ F150 Diesel General Discussion 7 02-24-2019 11:51 AM
Need Input on Helper Springs FordF150DieselOrdered 2018+ F150 Diesel General Discussion 2 07-24-2018 11:23 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome