Compression Ignition Addict
Join Date: Sep 2010
Location: Northern California
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Driveline / Carrier Bearing / Lift Kit Help
Ever since I swapped out my 4" rear blocks for 5.5" ones, I've been getting a noticeable vibration under moderate acceleration from 8-12mph. I currently have two 1/4" shims on the carrier.
The Ford dealership told me they think my pinion angle is off, and I have the wrong lift blocks. I got the angled ones (installed facing correctly).
Got home and put a magnetic protractor to each piece of the two piece driveline and saw they were approx 2* apart. So I put another 1/4" shim in, which brought em within .5* apart. Took it for a drive, and I'm still having a vibration around 10mph. Not as bad as before, but still there. Any advice?
06 F250 FX4 Lariat, 35" Nitto Terra Grapplers, 6" Lift Leveled w/Bilsteins, 4" MBRP TB Exhaust w/Cat Delete, Edge Insight w/EGT Probe & Dash Pod, SCT X3 w/SRL Tune From Matt @ Gearhead, Powerslot Rotors, Hawk Pads, Upgraded Oil Cooler Screen, Upgraded Turbo Drain Tube, Upgraded STC Fitting, Upgraded FPR Spring, CAT ELC Coolant, ARP Head Studs, Opti-Lube XPD, Coolant Filter, 45K Miles