Lifted truck for better aero...?

[aerohead]

Originally Posted by CFECO

I was reading somewhere on here there was a mention of, "in some cases" raising can be of benefit. It was in a looong series, and I believe it had the streamlining of a van in French. If frontal area is the measurement of the area of vehicle parts moving through the air as seen from the front, then the height above the ground should not matter except for what ever "extra" parts see the air excluding the ground effect. It "IS" a truck which gets used off road, so I can't "slam it", and by raising, I'm talking 1-2 inches, not the stupid "How high can I go" BS. I have found some load range "D" tires which are about 1 1/2 inches larger dia., that will help the gearing some too. They are rated to 65 psi, so 45-50 would be good I think. No wheelchairs here, I've got 40+ years of 4-wheeling, and have only rolled once (off road race long ago)! But thanks for the concern! Your Toy was probably a 4 cyl with 33 inch or larger tires, they don't like those without major gearing changes. I have no power problem, 4.7L. I-force, V-8, so It'll pull 33 inch tires easily. Plus with the higher load rated tires, they get taller without getting a lot wider. I'm not looking for "The look".

A couple inches will expose a slice of tire on each side and maybe a bit more of the naughty bits underneath,so it doesn't sound like a monumental departure from where you're at.
Your daily requirements will dictate your needs,and it sounds like the clearance would be welcome.
I hope that's not fast-moving water that you've got to go through.
If you can post a few views of the truck it would give us something to 'think' about.
And yes,the p'up out here is a Toy,with the 22 or 24-R.Don't recall.I think it's 31-inch tires on that one.It will have similar needs.

[CFECO]

Here are some photos...maybe?/Users/robertgay/Desktop/IMG_0948.JPG
/Users/robertgay/Desktop/IMG_0949.JPG
/Users/robertgay/Desktop/IMG_0951.JPG

[CFECO]

OK, That didn't work,maybe this...
That might have done it...Sorry to all, I'm MAC learning!

The oil drip is Jeep oil.

[kach22i]

I'll second what others have said, unless you have a way of controlling turbulent flow under the truck body you are better off cutting off the flow with a massive chin spoiler of some type.

I did this very thing with my 4x4 S-10 and saved 3 mph on the highway. Simple as screwing a 6 inch garden plastic trim piece to the bottom of the existing valance.

I'll post photos of the project soon......EDIT, I now have +5 posts!

Link:
http://forums.pelicanparts.com/off-t...effective.html

[slowmover]

On every vehicle enthusiast forum out there this thread would have died quickly, not simply to lack of information. Instead, here, it has improved considerably. The parameters of what is desired are now more clear, and some numbers to work against are coming to light (even if dimly).

[CFECO]

That is very cool! It even looks factory. That is sure to be on my soon to do list.

Thanks Much!

[TheEnemy]

Originally Posted by CFECO

OK, That didn't work,maybe this...
That might have done it...Sorry to all, I'm MAC learning!

The oil drip is Jeep oil.

Jeeps do have a tendency to mark their teritory.