What's the difference in a f-250 and a f-350srw? - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 08-21-2011, 06:02 PM Thread Starter
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What's the difference in a f-250 and a f-350srw?

Is it just blocks or is the springs different as well? Thanks

2007 F-250 Fx4 king ranch cc sb 6.0 psd mbrp 4" turbo back straight pipe exhaust,zoodad mod,fog light mod,edge cts w/egt, 2in level kit f350 blocks in the rear 35/12.50/20 nitto trail grapplers and a sct x3 with matts custom tunes and more on the way
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post #2 of 5 Old 08-21-2011, 07:04 PM
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different cab/bed options, rear block, axles are different, I believe they use different spring packs

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post #3 of 5 Old 08-21-2011, 10:51 PM
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Axles are the same. The difference is the blocks and the sticker. You can get the same springs depending on the package ordered.

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post #4 of 5 Old 08-22-2011, 05:59 AM
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i have never compared or counted however according to Ford and F350 has more axle splines than an F250.
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post #5 of 5 Old 08-22-2011, 08:12 AM
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There are a few differences between the F250 and the F350:
1) The Emblems
2) The Front Springs GAWR (4000-5600) actually can be the same depending on options
3) The Rear Springs GAWR are 6100 F250 or 7000 F350
4) GVWR on F250 is 9000 (option to 10,000) and either 10,100 or 11,400 on the F350
5) Rear Axle F250 is rated at 6200 and the F350 is rated at 7280
6) Rear Axle shaft spline minor diameter on F250 is 1.36" and on the F350 is 1.50", the major diameter is 1.50" on the F250 and 1.57" on the F350. Also the splines are 35 on the F250 and 37 on the F350.
7) 2 inch blocks for the F250 vs. 3 3/4 inch blocks for the F350
8) Both have the same 13.66" front rotor and 13.39" rear rotor brakes

https://www.fleet.ford.com/truckBBAS...essd-ms_06.pdf

Mark
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