flat or angled blocks
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Posting Guru
Joined: Sep 2009
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From: Virginia beach, VA
flat or angled blocks
I can't seem to find a definite answer on whether I need flat or angled rear blocks. Some people say to use a flat block and shim down the carrier bearing, others say an angled block makes it so you don't need to shim anything. The truck is a 4-door long bed, and I want a 5" rear block if that matters.
Cargo Master
Joined: Oct 2011
Posts: 2,958
Likes: 4
From: Denver, NC
Apparently every Truck can react differently, I recently put a ProComp 2.5 front / 2.0 rear Lift Kit in my 2006 F250.
I exchanged my rear OEM 2" Flat Blocks for some 4" Tapered Blocks (did drop Carrier Bearing a little too) & the truck developed a "shimmy" while accelerating. Long story short i was sure i needed Flat Blocks due to my new Pinion Angle & ProComp argued saying they needed to be Tapered. After i followed their suggestions & emailed them some Pic's, I finally got them to send me Flat Blocks which corrected my issue.
Here's my Pic's (remember your truck may react different) but i needed Flat-Blocks....
I exchanged my rear OEM 2" Flat Blocks for some 4" Tapered Blocks (did drop Carrier Bearing a little too) & the truck developed a "shimmy" while accelerating. Long story short i was sure i needed Flat Blocks due to my new Pinion Angle & ProComp argued saying they needed to be Tapered. After i followed their suggestions & emailed them some Pic's, I finally got them to send me Flat Blocks which corrected my issue.
Here's my Pic's (remember your truck may react different) but i needed Flat-Blocks....
Thread Starter
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Posting Guru
Joined: Sep 2009
Posts: 1,739
Likes: 0
From: Virginia beach, VA
Yeah I can definitely tell that middle picture looks wrong. I actually have 4" flat blocks now with no issues, I just didn't know if I needed an angled block to go any bigger.
Cargo Master
Joined: Oct 2011
Posts: 2,958
Likes: 4
From: Denver, NC
Man i want a set of Traction-Bar's one of these day's 
Yeap Flat it is, amazes me that everyone here that answered has Flat's & ProComp acted like my truck needing Flat's was a fluke....
WTF ProComp
Yeap Flat it is, amazes me that everyone here that answered has Flat's & ProComp acted like my truck needing Flat's was a fluke....
WTF ProComp
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