i want to put a 6.5" fabtech lift on '99 extended cab.any known problems? i will put 35/12.5/16,m/t on an 8" wheel,any problems here? will the 8" wheel look ok with the 12.5" tire? thanks everyone! also how much power will i lose and what recommended gear ratio should i go? sorry for so many ???

 

No problems but why the 8 inch rims ? 10 inch rims do not make the tires stick out to far......plus when I had the 8 inch rims my tires rubbed on the fabtech a-arm due to the tire ballooning....Power loose yes, does it bother me, no.....What will bring it back to normal power....4.56s.....Good luck, Dave

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1998 F-150,4x2,4.6 AUTOMATIC, XLT

FABTECH LIFT 6.5
BODY LIFT 3IN (6"11 1/2")
LIFT LIPS
315 GEOLANDERS
EAGLE 143 16X10s
SUPERLIFT TRACTION BARS
NERF BARS
F&R LUMI LOGOS
SUPERCHIPPED
FLOWMASTER 40
CB (TX CHAPTER MUST)
CLEAR CORNERS
IMAGE COVERS BACK LIGHTS
COVERKING DASH COVER
SNUG LID
BEDLINER AND MAT
EGR FENDER FLARES
CLASS III HITCH
STROBES
PAINTED MOTOR
AIRAID KIT W/PREFILTER
BUG SHIELD AND RAIN GUARDS
6 DISC CD CHANGER
BLUE LIGHTS UNDER TRUCK
MUTH MIRRORS

San Antonio
DWESSELS89@AOL.COM

FUTURE MODS
4.56 GEARS
SUPER CHARGER
HEADERS

 

Your tires are going to rub on the A-Arm like Dave said, and depending on how much, it might be kind of dangerous after a while. I imagine that it could eventually wear the tire out so much it will blow...?? But then you could sell the rims, since the truck would be totalled from flipping it...lol

I just put 33's on, and I went with a wider rim. I think it looks better, and it also is a safer setup.



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2000 F150 XLT 4.6L V8 Auto, SuperCab, Torreador Red Metallic, Magnaflow Cat-Back Exhaust, K&N Drop-in, Ford Bedliner, Tinted Windows, Steel Horse Billet Grill, Fabtech 3.5" Spindles, 1.5" rear blocks, 3" Body Lift, Lift Lips, 33/12.50/16.5 BFG AT's on 16.5x9.75 American Eagle 589's, Fabtech Performance Shocks, Sylvania Cool Blue Headlights

www.geocities.com/y2kf150

 

I have to disagree, guys... I've got the same set-up he's talking about right now with NO rubbing on the control arms. I think as long as you have the new Fabtech spindles and not the older Bullseyes they used to give you, you'll be fine! The newer spindles push the wheels outboard about and inch and a half further than the old which gives additional clearance on the arms. I do think the tires would look better on 10" wheels, but I seriously doubt you'll have any safety issues like flipping over with the 8"ers.

Yup, power loss is there and noticable. Enough to make you not want to do it? Hell no... Gear ratio needed to go back to stock performance is something like 4.27 according to this calculator:

http://www.dakota-truck.com/TIRECALC/tirecalc.html

4.10's or 4.56's would work fine. I'm thinking 4.10's this summer... I prefer a little better mileage over a little more low-end grunt. I'm pretty sure you'd be happy with either

Later!


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-JonC-
*Silver 2000 4x2 F150 Supercab
*4.6L Triton V8
*315/75/16 Pathfinder ATR's
*16 x 8 Panther Custom 108's
*K&N GenII FIPK
*Custom Cat-back w/ Flowmaster 50 Series
*Fabtech 6.5" "Ultimate" suspension lift
*Smittybilt nerf bars
*Extang Black Max soft tonneau
*Stull billet grille
*Clear corners