Rear Block Swap - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 01-03-2014, 03:32 PM Thread Starter
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Rear Block Swap

Yes I've searched, trying to find out what I've got, finally was able to score some f350 blocks from the junk yard from an 08, my first question is are there any major differences between the rear axle of the 08 350 and 04 250 (I.e. axle diameter block width etc.) that I need to be aware of prior to tearing everything apart? Have the u-bolts from it and they just seem bigger......not trying to reuse them but more of a reference. Thanks ahead of time and sorry for another thread regarding a common general question.

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post #2 of 12 Old 01-03-2014, 08:21 PM
Fill it up again Dummy
 
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I don't know the differences except that the 350 is 2" taller.
Nothing wrong reusing ubolts as long as the threads sure good and rust isn't a issue.
Make sure spring pins are same for axle. If it fits use it


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post #3 of 12 Old 01-04-2014, 03:52 AM Thread Starter
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Ya I know that much. Just trying to find out any major differences between 04-08 rear axles

04 ECLB 4x4
6.0/4 IN. MBRP 6 IN. Tip/Blue Spring/XDP Coolant Filter/SCT Tuned by Stroked Diesel/IDP FICM Tune/S&B Intake/Stroked Diesel EGR Delete/Boost-EGT-Trans Autometer/SG2/Leveled/Cal-Tracs/20x12 MM962's/305-55-20 Terra Grapplers/
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post #4 of 12 Old 01-04-2014, 04:08 AM
N.S.D.Q.


 
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I think the blocks are different between cab/bed configurations. Something about the block being tapered or flat. So a CCLB could be flat while a EXSB would be tapered something like that. As long as the truck you pulled them off of is the same cab/bed as yours you should be fine. The different blocks are due to the driveshaft alignment and vibrations.


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post #5 of 12 Old 01-04-2014, 04:11 AM Thread Starter
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Yes i know all of this, they are flat blocks, I'm really not trying to find out anything regarding the blocks I'm trying to find out if the axle has changed at all from 2004 to 2008. More or less a curiosity thing.

04 ECLB 4x4
6.0/4 IN. MBRP 6 IN. Tip/Blue Spring/XDP Coolant Filter/SCT Tuned by Stroked Diesel/IDP FICM Tune/S&B Intake/Stroked Diesel EGR Delete/Boost-EGT-Trans Autometer/SG2/Leveled/Cal-Tracs/20x12 MM962's/305-55-20 Terra Grapplers/
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post #6 of 12 Old 01-04-2014, 04:26 AM
N.S.D.Q.


 
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Nope, No change that I know of between the years.


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post #7 of 12 Old 01-04-2014, 04:52 AM
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Exterior of the axle hasnt changed. The only changes are the axleshafts and number of splines

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post #8 of 12 Old 01-04-2014, 04:55 AM Thread Starter
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Quote:
Originally Posted by Dave View Post
Exterior of the axle hasnt changed. The only changes are the axleshafts and number of splines
thank you, so when a company asks for exterior diameter of the axle its still the same regardless of year for the most part, 99+

04 ECLB 4x4
6.0/4 IN. MBRP 6 IN. Tip/Blue Spring/XDP Coolant Filter/SCT Tuned by Stroked Diesel/IDP FICM Tune/S&B Intake/Stroked Diesel EGR Delete/Boost-EGT-Trans Autometer/SG2/Leveled/Cal-Tracs/20x12 MM962's/305-55-20 Terra Grapplers/
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post #9 of 12 Old 01-04-2014, 05:01 AM
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Quote:
Originally Posted by xp1ik05 View Post
thank you, so when a company asks for exterior diameter of the axle its still the same regardless of year for the most part, 99+
3.625 is your axle diameter

Email: Dave@powerstroke.org
2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
2006 F250 ECSB Lariat 4x4

Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
Coolant filter
Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
Dually LED lights from Stealth Automotive/Xpedition Outfitters
No Limit Fab 6.0 Cold Air Intake
http://www.bulletproofdiesel.com/default.asp
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post #10 of 12 Old 01-04-2014, 04:38 PM Thread Starter
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ok last question, is the 08 axle the same diameter? i was unable to track down some new u-bolts today like i had planned and want to get these blocks in tomorrow, they fit over the axle but they just seem alittle bigger if that makes any sense

04 ECLB 4x4
6.0/4 IN. MBRP 6 IN. Tip/Blue Spring/XDP Coolant Filter/SCT Tuned by Stroked Diesel/IDP FICM Tune/S&B Intake/Stroked Diesel EGR Delete/Boost-EGT-Trans Autometer/SG2/Leveled/Cal-Tracs/20x12 MM962's/305-55-20 Terra Grapplers/
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