Anyone notice the rear end wanting to jump out while making high speed sweeps on imperfect roads over 100mph? I have observed this a few times already when hauling butt on wavy roads over 100 it feels like the air is making the back end real light and unstable. I am thinking about fabbing a wing to help this. Any help?

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01' Lightning, Silver still breaking in...

 

What on earth would possess you to drive a TRUCK like that ?
Please tell me your not on a public road when your pushing your limit of stupidity.

 

Lightfootning- What do think the L is for, driving down to pick up groceries?

TahoeSS- Mine does the same thing, I believe lowering is the solution, those that have lowered their trucks may want to respond here

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GalaxyEng
2000 RED #2926
13.5@101
BedRug
Haig custom mats
PSP Filter

 

I didn't know there were any high speed sweepers in Texas. Yea, add a wing, that will fix it.

BTW, what exacly does a "Performance enthusiast" do? Are those kind of jobs available in Florida?

 

Hmmm, well maybe if you throw some groceries in the back, the extra weight will keep the tires on the road.

Perhaps I am just getting old. I just don't think the public road is a place to test the limits of adhesion. Sure, it handles better than a "normal" truck. But I still think testing adhesion with triple diget speeds in a TRUCK on Public Roads is Foolish.

If you want to go that fast, why not just buy a vehicle that was designed for that purpose in the first place... and take it to the track.

I wonder how much longer the Insurance Companys are going to insure these trucks for the same rate as a regular F150 ?

 

TahoeSS, do you have a bedlid? I've got one and it helps a little. Actually, the tail doesn't come around unless you get air completely, it just kinda gets light.(don't ask how I know) I actually run about 2 psi more in the front tires to help the front 'set' quicker. It also helps when the tails out and you're trying to catch it. IMHO I think the shocks have too little rebound, and let the truck bounce around too much, but I've not researched enough to find a better solution.

 

Lightfootning.....you ARE getting old, no offense meant. If no one "needed" to go over the speed limit, we could all brag about how bada$$ our Yugos were. Yeah, it's a truck. So? You're point there is???? It's a truck built for high performance.

TahoeSS....I've also noticed the same issue though only on my F150 when I got it over 100 on I5 the other night. It felt really skittish the higher the needle went. I was thinking that maybe a bed cover, as Loco suggested, might work but why not take it to a fiberglass shop and have them fabricate a wing right on to the cover? Nothing overly huge ala rice rods but something that'll help add a bit of downforce?

Also, what tires are you running?

 

I am running stock tires they grip good. My Tahoe did not show these tendancies like this truck does. I thought they went with the Bilstiens for more rebound? I will look at a NASTRUCK and see what they are doing for air management. I will also look at Roush Racing site about suspension for the L.

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01' Lightning, Silver still breaking in...

 

TahoeSS: Do you think it might just be the imperfect road? I'm sure alot of rear wheel drive vehicles will jump out at 100 on an imperfect road. My tuck seems pretty well planted but bumps do throw it off a little.


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Black '99 #398 of 4000
SHM mass air/filter, SHM chip, Level 10 shift kit and converter.
13.71 @ 98.2 mph (stock)
13.34 @ 102 mph (chip/mass air)
Converter/shift kit to be tested soon!

 

It's the solid rear axle and the bumps. It's why SVT put a IRS in the Cobras. Not that it's perfect in that case heheh. Wait'll 2003, all Mustangs get IRS on the DEW98 chassis. You can't really shake that problem without going to an independant setup.

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2000 F150 XLT 4x4 Short Bed. Amazon Green, 5.4L, SuperCab, ORP, Tow Package, Sliding Rear Window, Electronic Shift, Keyless Entry, LT265-70-17 Tires, Clarion Pro Audio, Herculiner Bedliner, Air Silencer Removed.

1994 SVT Mustang Cobra. #1032 of 6009. Black coupe with black leather int., 3.73 rear, Bassani Exhaust, Aluminum D/S, Bridgestone RE-71 255-45-ZR17

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[This message has been edited by 2000 F150 4x4 (edited 04-08-2001).]