Pickup vs cab and chassis - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 8 (permalink) Old 01-19-2010, 04:04 AM Thread Starter
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Pickup vs cab and chassis

Hey all. I have a question regarding the '99-'03 7.3 trucks. I'm shopping for one, and have come across several that are cab and chassis trucks with flatbeds on them.

I know that the cab and chassis has a different width frame than the pickups, but are there any other differences? Why are the frame widths different? Considering that I will probably wind up putting a flatbed on the truck I find if it doesn't come with one, is there any reason to buy one over the other?

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post #2 of 8 (permalink) Old 01-19-2010, 12:11 PM
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Other than the frame, exhaust is different to compensate for the width change obviously. If the frame was as wide as a standard pickup frame, you wouldn't be able to get the dual wheels to sit flush with the body line. Dually pickups are wider if you've ever noticed, while on my cab and chassis it's skinnier than the dually.

No other serious differences off the top of my head right now.

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post #3 of 8 (permalink) Old 01-19-2010, 12:50 PM
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i have one actually. If you want some pictures i can send you some. Mine doesnt have a flatbed on it either. i am thinking os selling it though.
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post #4 of 8 (permalink) Old 01-20-2010, 01:13 AM Thread Starter
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I still don't fully understand why the cab and chassis trucks are narrower, but it's good to know that's the only real difference. I'd think, in order to narrow the wheel width, that they would simply run a narrower axle on a pickup sized frame. Seems like that would be less expensive to produce than two different frame sizes, along with having to get two different axle sizes.

Are there as many options for pickup sized flatbeds as there are cab and chassis sized beds?

2002 F-350 Lariat crew cab 4x4 PSD auto, DRW with 163,000 miles, Ford AIS, otherwise all stock.

1994 F-250 PSD, 5 speed, open intake, 5" single stack, gauges, DynaMat, 302,000 miles.
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post #5 of 8 (permalink) Old 01-20-2010, 05:42 AM
 
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I believe the only reason the frames are narrower is to accomodate the wide selection of aftermarket bodies...
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post #6 of 8 (permalink) Old 01-20-2010, 11:03 PM
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Quote:
Originally Posted by Foxx View Post
\I'd think, in order to narrow the wheel width, that they would simply run a narrower axle on a pickup sized frame. Seems like that would be less expensive to produce than two different frame sizes, along with having to get two different axle sizes.
You can't just have a narrower axle, there just isn't enough room to fit a whole nother tire on there, and not be significantly wider than the body. Think about it, how much of a gap is there between the leaf springs and tire on a regular pickup? A few inches....it just wouldn't work.

And I believe FA is correct, body options..

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Early 1999 F350 SRW 8' Box, 6spd 4x4 Stock
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post #7 of 8 (permalink) Old 01-21-2010, 01:58 AM Thread Starter
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Originally Posted by brendonv View Post
You can't just have a narrower axle, there just isn't enough room to fit a whole nother tire on there, and not be significantly wider than the body. Think about it, how much of a gap is there between the leaf springs and tire on a regular pickup? A few inches....it just wouldn't work.

And I believe FA is correct, body options..
I didn't think about the inner tire hitting the frame, that makes sense. Seems like a cab and chassis truck may be the best way for me to go, now the trick will be finding one.

2002 F-350 Lariat crew cab 4x4 PSD auto, DRW with 163,000 miles, Ford AIS, otherwise all stock.

1994 F-250 PSD, 5 speed, open intake, 5" single stack, gauges, DynaMat, 302,000 miles.
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post #8 of 8 (permalink) Old 01-21-2010, 05:36 AM
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Gearing is also different on the Cab and Chassis trucks. Overall width is at least four inches narrower than the dually pickups, still a little wider than a SRW truck tho.

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