Heatseeker

Agreed 80# wouldn’t make that much of an impact.

ive driven over a hundred miles. I’ve also loosened both control arms driven just a bit then tightened them down. I’ve double checked the perch and made sure the spring is oriented correctly in the upper mount. I’m out of ideas.

Bossman1582

What were your measurements before you installed them?

Heatseeker

If I remember correctly front was 23 1/4 rear was same as it is now.

Heatseeker

@ Bossman 1582, I’ll take a pic of the CV’s when I get home.
The reason I say swap out is because I believe the spring is wrong. I’ve done and redone it multiple times. I’ve installed the b5100’s on all of my old f150 so I’m pretty confident is wasn’t an install error. They are seated properly on the lowest perch, correct placement in the upper, preloaded prior to tightening down control arms. Out of ideas.

Bossman1582

Eibach claims 2.7” of lift. So 23.25+2.7=25.95”
You measure 26”, you are right where you should be.

KingDeleted

What number springs did you get. IIRC they should be 30-35-037

Heatseeker

Eibach also says that on the lowest perch with the spring it will be leveled. Just over 26 upfront, and 24 in the rear.

KingDeleted

Here’s where I’m at now. With the Eibach springs and struts I’m able to fit the 35X12.5r18’s . They are verrry close and rub a little in reverse. I suggest you lift the rear a couple inches and perhaps get new shoes, then call it a day.

Heatseeker

Good looking truck. Thank you for all your input, I appreciate the help.

Bossman1582

So, what was the final outcome? Did you figure it out?