*PICS* Newton 2.5" with 325 Goodyear Duratracs - Ford Powerstroke Diesel Forum
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post #1 of 22 Old 01-21-2014, 05:47 PM Thread Starter
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*PICS* Newton 2.5" with 325 Goodyear Duratracs

Hey guys, just wanted to post up some long awaited pictures of my rig after a small lift and some new meats. The lift is a Newtons 2.5" leveling kit in the front, with 4.5" blocks replacing the factory blocks for around 2.5" in the rear also. Tires are 325-60r20 Goodyear Duratracs (advertised as 36.1"tall).

A few questions for any of those who can answer...

1. I noticed that on one side my rear axle is centered in the wheelwell and on the other its offset toward the rear. Anyone else have this? I cant determine if this was the same before and after the lift as I didnt check before...but I do know that theres pretty , much no way to install tne rear blocks incorrectly. They have alignment holes for the leaf spring center pin and axle perch.

2. Is it common (in your opinion) to need traction bars with 4.5" blocks and a 35-36" tire? Ive noticed a slight drivline vibration when accelerating from a standstill that seems like pinion angle and driveshaft angle issues. Not unbearable, just wondering if my logic is accurate.

3. Spartan users with similar mods and tire size....what tune(s) are you guys running? For over a year now with stock tire size ive run this truck on the 250el tune and been very pleased. However with the tire change it seems sluggish, makes excessive boost and really doesnt impress me. While I understand that bigger tires=more rotating mass and they make an already less favorable 3.55 gear ratio taller....it seems like I could improve. I believe swapping to a late lock tune (55 mph lockup vs 45) I will be able to stay out of low rpm high boost acceleration since the bigger tires cause it to lock slightly premature. I also know that tunes have different characteristics (outside of raw "hp over stock" numbers). Ive heard grest things about the 300 el tunes in terms of power, egts, and shifting. I tow light occasionally 6-7000 lbs, and usually drive it pretty kind wnen unloaded with the exception of the occasional soot cloud or quick pull. Not concerned too much with fuel mileage.

Enough of that crap...pictures! Let me know if you have any suggestions!

*PICS* Newton 2.5" with 325 Goodyear Duratracs-1390358621901.jpg

*PICS* Newton 2.5" with 325 Goodyear Duratracs-1390358770044.jpg

*PICS* Newton 2.5" with 325 Goodyear Duratracs-1390358786312.jpg
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post #2 of 22 Old 01-21-2014, 05:51 PM Thread Starter
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Sorry for the duplicate pics...first time posting from my tablet

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post #3 of 22 Old 01-21-2014, 05:51 PM
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Looks good!
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post #4 of 22 Old 01-21-2014, 06:29 PM
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Perfect IMO.

Best of both worlds, and perfect stance

FWIW I have read a few threads where guys were having similar issues and ended up ordering a new shaft to help correct the issue.

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post #5 of 22 Old 01-21-2014, 06:37 PM Thread Starter
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Originally Posted by ZWilson07 View Post
Perfect IMO.

Best of both worlds, and perfect stance

FWIW I have read a few threads where guys were having similar issues and ended up ordering a new shaft to help correct the issue.
I just read a thread on that too. Id hate to throw money at traction bars if they wont slove the problem. Hopefully some other folks can chime in on this one!

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post #6 of 22 Old 01-21-2014, 06:54 PM
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Originally Posted by mattl31 View Post
Hey guys, just wanted to post up some long awaited pictures of my rig after a small lift and some new meats. The lift is a Newtons 2.5" leveling kit in the front, with 4.5" blocks replacing the factory blocks for around 2.5" in the rear also. Tires are 325-60r20 Goodyear Duratracs (advertised as 36.1"tall).

A few questions for any of those who can answer...

1. I noticed that on one side my rear axle is centered in the wheelwell and on the other its offset toward the rear. Anyone else have this? I cant determine if this was the same before and after the lift as I didnt check before...but I do know that theres pretty , much no way to install tne rear blocks incorrectly. They have alignment holes for the leaf spring center pin and axle perch.

2. Is it common (in your opinion) to need traction bars with 4.5" blocks and a 35-36" tire? Ive noticed a slight drivline vibration when accelerating from a standstill that seems like pinion angle and driveshaft angle issues. Not unbearable, just wondering if my logic is accurate.

3. Spartan users with similar mods and tire size....what tune(s) are you guys running? For over a year now with stock tire size ive run this truck on the 250el tune and been very pleased. However with the tire change it seems sluggish, makes excessive boost and really doesnt impress me. While I understand that bigger tires=more rotating mass and they make an already less favorable 3.55 gear ratio taller....it seems like I could improve. I believe swapping to a late lock tune (55 mph lockup vs 45) I will be able to stay out of low rpm high boost acceleration since the bigger tires cause it to lock slightly premature. I also know that tunes have different characteristics (outside of raw "hp over stock" numbers). Ive heard grest things about the 300 el tunes in terms of power, egts, and shifting. I tow light occasionally 6-7000 lbs, and usually drive it pretty kind wnen unloaded with the exception of the occasional soot cloud or quick pull. Not concerned too much with fuel mileage.

Looks good! As far as wheel alignment I noticed mine is not quite centered (on at least 1 side, haven't really looked at the other). I do run traction bars on mine and it is smooth as butter. It def made a huge difference even from stock height. I also have 4" blocks. I also run the 300LL but I have 3.73s. I wouldn't suggest towing on that tune however.


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post #7 of 22 Old 01-21-2014, 07:04 PM
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Damn that looks awesome! I wish he made a 2.5" leveling kit for the 2011+'s.

Beautiful truck

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post #8 of 22 Old 01-22-2014, 05:15 AM Thread Starter
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Originally Posted by 98 Saleen Cobra View Post
Damn that looks awesome! I wish he made a 2.5" leveling kit for the 2011+'s.

Beautiful truck
Thanks! I'm surprised he isn't making anything for you 11+ guys yet.

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Originally Posted by CountryAggie View Post
Looks good! As far as wheel alignment I noticed mine is not quite centered (on at least 1 side, haven't really looked at the other). I do run traction bars on mine and it is smooth as butter. It def made a huge difference even from stock height. I also have 4" blocks. I also run the 300LL but I have 3.73s. I wouldn't suggest towing on that tune however.


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I think I'm going to give the 300LL a shot myself, then swap to the 210 tow when I pull the boat. Do you have real bad injector rattle with the 300? And have you ever run the 250?

Curious from someone with first hand experience what makes the 250 and 300 different other than advertised horsepower gain.
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post #9 of 22 Old 01-22-2014, 05:49 AM
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When I did a 4" lift on my truck I had to install a spacer between the crossmember and the carrier bearing. It was included in the kit. After installing it, it still had that vibration. I had to add another 1/2" of spacer and it fixed everything. I made my own spacers out of 1/4" plate and then used grade 8 nuts and bolts to put everything together. It was around $15 in parts.


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post #10 of 22 Old 01-22-2014, 06:35 AM Thread Starter
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Originally Posted by sbluke55 View Post
When I did a 4" lift on my truck I had to install a spacer between the crossmember and the carrier bearing. It was included in the kit. After installing it, it still had that vibration. I had to add another 1/2" of spacer and it fixed everything. I made my own spacers out of 1/4" plate and then used grade 8 nuts and bolts to put everything together. It was around $15 in parts.


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I may try this as a quick preliminary to saving 500 bucks from traction bars or a new driveshaft

The lift blocks WERE tapered to correct pinion angle, but it may just have not been enough.
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