I see everyone making reference to different gear ratios. eg 3.08 3.55 3.73 What's the difference and what does this affect. I also wanna know which would be best if all I wanted was speed.

 

basically the lower the number the higher the gear ratio which inturn means slower acceleration. if you want speed go for something like 3.73 to 4.10 gears if you feel like paying about $500 per axle. the lower gears will give you better accelaration to whatever speed you want but your top end will get lower with the lower gears. just talk with a mechanic you trust and see which would be best for you. i have a 97 F-150 4x4 offroad with 4" suspension lift and 35" tires so nest week i am putting in 4.56 gears so i can push those big tires with out over working my engine and transmission.

Bigern



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How Limited Slip. I know what it is but what does it entail to have it added after market. That and a sliding rear is the only thing I miss from my old truck. Anyone know what it would cost? I have 3.55 reg now.

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bIGGINS
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My New Ride->>
2001 F-150XLT 4X4 Sport SuperCab
Styleside, Short Bed, Black on Black, 4R70W, 5.4L, 3.55reg, 17in Rubber, OEM Snapless Tonneau Cover, Harley Bedliner
Add On's
Sony CDX-M770 Head Unit, (2) JLAudio 8W6's, RF Punch 150 amp, HL Blackouts, DashMiser Plus II Strobe Light (fireman)
My Last Ride->>
1999 F-150XLT 4X4 Reg Cab
Styleside, Long Bed, Amazon Green, 4R70W, 4.2L V6, 3.55reg, 16in Bridgestone Duelers, OEM Snapless Tonneau Cover

 

biggins- You replace the differential in your rear-end. Diff costs approx. $400 plus install; another $300-$400..

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2000 F-150 XL, RC, LB, 5.4L, 4R70W, 3.55LS,
Class III tow, Payload #3, & Convenience pkgs.,
4-wheel disc/ABS, Chestnut/Parchment 40/60,
Ford bedliner w/Paintsaver & gas/wheel/spare locks,
K&N F.I.P.K. w/Outwears pre-filter, Superchip,
Dynomax ultra-flow welded 3" cat-back w/ 3" Y-pipe,
Hellwig front & rear anti-sway bars, Rancho RS 9000s,
Mobil 1, K&N oil filter.