F450 vs F550 - Diesel Forum

Farmer18 · 12-29-2012, 03:10 PM

Im looking for a diffrent truck im looking for a 550 or 450 crew cab i was wondering what the diffrence was besides the springs? Also is there a diffrence between the cab and chassy and one with a bed besides the bed? Im going to put a flat bed on so it doesn't matter. Thanks for your help.

tfunk88 · 12-29-2012, 04:35 PM

Not sure if there's a difference between 450 and 550 other than possibly springs, but chassis cab frame rails are narrower than pickup truck frame rails

Mongus · 12-29-2012, 04:54 PM

The rear end.

F350 Dana 80..... Big ( dually )
F450 S110...... Bigger
F550 S135..... Biggest

The pick up has the standard width and "humped" frame ( as pick ups do )

The cab & chassis have a flat top frame. Much easier to do an up fitter body on.

I like the F550 above all.

Farmer18 · 12-29-2012, 10:27 PM

Mongus, Id like a 550 but im looking for a crew cab in xlt or larett and im finding them hard to find so I think im going to have to settle with a 450. with just the springs and axle being different it wouldn't be to hard to change them out.

08F450Superduty · 12-30-2012, 09:22 AM

Since you are going with cab and chassis with flatbed why not go to a 650 and get the Cummins motor with the Allison Trans, be a much better setup.

**caryt** · 12-31-2012, 12:47 PM

Got a late 99 F550 here at the shop..just modded it out...the brakes are HUGE and the real axle is insane.

Only thing I do not like about it is the gearing 4.88's is nuts 4.10 would be so much better..of if US gear was still making their OD unit that would be perfect.

guardrail22 · 01-01-2013, 09:57 PM

for Lariat or XLT plan on ordering.

no ones inventory mgr will buy chassis cabs with anything but plastic seats.

browndavid · 01-15-2013, 01:21 PM

Looking for a crew cab then go with Ford f 450 rather than f550..

siduramaxde · 01-24-2013, 08:01 AM

Yep, I had to special order my F450 Chassis Cab xlt....I couldn't find one on a dealer lot anywhere.

**Cell1Diesels** · 01-24-2013, 08:13 AM

No one has touched on the power issue with the cab chassis. I bought a 2012 F350 CC Pickup and then bought another F350 CC Cab Chassis for my business. The power difference is night and day. I've since learned from reading on this forum that for some reason they derate the cab chassis from the 400HP/800 Torque that the pickups have to 300HP/660 torque. I still don't have a complete understanding as to why, something about the EPA. But I would recommend you take it into consideration when deciding on you next vehicle.