I talked to a local vendor about putting a 410 gear in my 99, he said he has done 7 or so 99's,all with 410's. He told me that the speed-o will correct itself, that nothing had to be done it works off the ABS sensor on the gear case.
Any comments anyone???????????

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1999 Black Lightning SVT all options, (Factory soft tonneau cover, 6 Disc CD, Class III towing hitch), Loyd one piece floormat (Fits well, looks good), Tail light covers (Killer painted black to match), Black spray in bed liner (looks very good), Windows tinted gray 15% on doors, Dark Limo on back glass, Ordered 1st truck 1/21/99 till salesman told me a $5000 premium would be added, On the same day ordered second truck 2/24/99 (BEFORE getting my check back), Took delivery 6/21/99 After MANY many MANY promised ETA dates, Build date of 5/20/99

 

SVT54SC:
Can't answer yo

 

HI!... SVT54SC, the vendor you talked to is totally wrong! I had 4.10 gears installed in my truck about 2 weeks ago. The dealer installed my gears and told me that the speedo on my "99" had to be recalibrated. The technition that was trained to do the recalibrations was on vacation at the time, so another mechanic that was there tryed to do it and was not sure if he got it right. They told me later that the speedo was still out by 10kph (at 80kph I was actually doing 70kph) and to make another appointment when the proper technition got back from vacation. Well today I wanted to compare my speedo with my freinds F-150, and they were right, it is out by 10kph at 80kph, but what they forgot to mention that at 130kph my speedo is reading 152kph. Thats 22kph difference, and it gets worst the faster I go. And because the vehicle speed sensor is connected to the speedo my top speed limiter went from 108mph to 92mph. My buddy's F-150 V-6 beats me now for top speed! I made a appointment for next FRIDAY to get the speedo recalibrated properly and will let you know how it turns out.

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NEAL [ the horsepower freak ] NEWMAN
'99' F-150 XLT SPORT, oxford white, reg cab shortbox stepside,5.4, auto, 4.10L.S, captain's chairs, bedliner, GTS carbon fiber headlight covers, **** CEPECK clear halogen driving lights, GTS slotted tailight covers (painted oxford white), FORD locking lug nuts, tinted windows,true duel exhaust with 2.5 inch mandrel bent pipes and FLOWMASTER 3 chamber mufflers with 3' tailpipes exiting before the rear wheel like the LIGHTNING, HELLWIG rear stabalizer bar, AUTOMETER guage pod and tranny temp guage, custom fabricated air intake trac and huge K/N filter, TPS mod, BELLTECH 2-inch rear drop, SUPERCHIP

 

HI!... By the way if your speedo is off, you are adding a lot of exter miles to your odometer that you actually hav'nt travelled.

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NEAL [ the horsepower freak ] NEWMAN
'99' F-150 XLT SPORT, oxford white, reg cab shortbox stepside,5.4, auto, 4.10L.S, captain's chairs, bedliner, GTS carbon fiber headlight covers, **** CEPECK clear halogen driving lights, GTS slotted tailight covers (painted oxford white), FORD locking lug nuts, tinted windows,true duel exhaust with 2.5 inch mandrel bent pipes and FLOWMASTER 3 chamber mufflers with 3' tailpipes exiting before the rear wheel like the LIGHTNING, HELLWIG rear stabalizer bar, AUTOMETER guage pod and tranny temp guage, custom fabricated air intake trac and huge K/N filter, TPS mod, BELLTECH 2-inch rear drop, SUPERCHIP

 

So tell me..., how many horsepower did you pick up with that there gear change?


Sorry, I couldn't resist!

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1999 Black (Soon to be lowered) Lightning - w/Super Chip (YEEEOW!), CD Changer, Towing Package,Grey Rhino, clear corner lenses.

 

You dont gain horsepower with gear changes. It just changes where it appears.

Beat ya Neal!

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Fast46Triton

1999 Ford F150 XLT Supercab, Shortbed, 4x2, 4 wheel disc brakes/4 wheel Anti-Lock Brakes, Cloth Seats, Amazon green, 16" All season tires, Soft Tonneau Cover, CD Player, 4.6 liter Triton V8, 3:55 ls, towing package, 4 speed auto, K&N Airfilter
Future Mods:
1)Superchip
2)Airbox Mod
3)Gibson Exhaust

 

My dealer says the only option for the 99 Lightning is the 3.73 ring & pinion set. While this may be true according to his parts manual, I understand that the 4.10 from the 99 Expedition will fit. He is telling me that the Expedition set is an 8.75 instead of the 9.75 that is required by the new Lightning, but he admitted that he wasn't 100% sure. If I make a change, I want it to be significant (the 4.10 instead of the 3.73). Can anybody help clear this up?

Thanks

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1999 Black (Soon to be lowered) Lightning - w/Super Chip (YEEEOW!), CD Changer, Towing Package,Grey Rhino, clear corner lenses.

 

if the rear end is out of an expedition[which it is] then the 4.11 gears in the svt book should work.and as far as the speedometer goes it is recalibrated through the diognostic plug under the hood. they reset the so called pariminters in the computer to correct it.it can be done as many times as needed unlike the older speedometers that could only be done 3 times.this was told to me by the man at the ford place who knows his stuff.

 

HI!... Well I got my truck back last FRIDAY and I have a problem. The mechanic (a good friend of mine) who was trained to do the recalibrations tried for 4 hours to recalibrate my speedo with no luck. He finally called up SVT and they told him that the "99" F-150 speedo could not be recalibrated from the back of the speedo. They suggested that we reflash the computer (schedualed for this FRIDAY) with some new parameters that they gave him or that the V.S.S gear in the rearend must be changed to the proper size. (almost the same thing as the old tranny speedo gears, but this one is in the rearend) I"ii let you guys know how it goes on FRIDAY. Now this means that I have to send my SUPERCHIP back to SUPERCHIPS, WILL THIS EVER END!!!!!!!

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NEAL [ the horsepower freak ] NEWMAN
'99' F-150 XLT SPORT, oxford white, reg cab shortbox stepside,5.4, auto, 4.10L.S, captain's chairs, bedliner, GTS carbon fiber headlight covers, **** CEPECK clear halogen driving lights, GTS slotted tailight covers (painted oxford white), FORD locking lug nuts, tinted windows,true duel exhaust with 2.5 inch mandrel bent pipes and FLOWMASTER 3 chamber mufflers with 3' tailpipes exiting before the rear wheel like the LIGHTNING, HELLWIG rear stabalizer bar, AUTOMETER guage pod and tranny temp guage, custom fabricated air intake trac and huge K/N filter, TPS mod, BELLTECH 2-inch rear drop, SUPERCHIP