speedo gear
#1
12-28-2000, 12:43 AM
Join Date: Dec 1999
Location: Orlando, FL
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speedo gear
I looked through the posts and im still confused. I have a 2wd V6 that originally had 235/70/16(28.95" i think) and now have 265/75/16(31.8?) and i have the 3.55 NON limited slip rear end. Which speedo gear do i need to correct the speedo.
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1997 F150 Reg. cab.,2wd, 4.2 V6, Stepside.
Mods so far: 265/75/16 Pirelli Scorpion ATs, Toolbox, CB Radio, Tint, K&N filter, Kenwood CD player, 2 Fosgate 10s.
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1997 F150 Reg. cab.,2wd, 4.2 V6, Stepside.
Mods so far: 265/75/16 Pirelli Scorpion ATs, Toolbox, CB Radio, Tint, K&N filter, Kenwood CD player, 2 Fosgate 10s.
#2
12-28-2000, 10:20 AM
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Join Date: Jun 1999
Location: Cary, NC
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brew,
The gear calculator I've been using www.4lo.com says your 235's were 29" and your 265's are 31.6. Which translates to an 8.3% change. That's still pretty close to your figures which would make it about 9%. There is no way to tell which drive gear you have without pulling it out. Take it out and count the number of teeth. You will need as close to 8 or 9% fewer teeth as you can get. Which, in reality, will probably be two teeth less. Bring it with you to the dealer so they can match it up.
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98 F-150 XLT 4X4 ORP Super Cab Short Bed, 4.6, Auto, 4.10's, Mag-Hytec diff. cover, Magnacharger supercharger, Superchip, Gibson single cat-back, 80/100w German head lamps, Warn HS9500i winch with semi hidden mount, Wrangler dual battery kit with red & yellow top Optima batteries, 285/75R16 Goodyear MT/R's, 16x8 Center Line Hell Cats. Needs one more door.
http://hometown.aol.com/ninetyeightfword
The gear calculator I've been using www.4lo.com says your 235's were 29" and your 265's are 31.6. Which translates to an 8.3% change. That's still pretty close to your figures which would make it about 9%. There is no way to tell which drive gear you have without pulling it out. Take it out and count the number of teeth. You will need as close to 8 or 9% fewer teeth as you can get. Which, in reality, will probably be two teeth less. Bring it with you to the dealer so they can match it up.
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98 F-150 XLT 4X4 ORP Super Cab Short Bed, 4.6, Auto, 4.10's, Mag-Hytec diff. cover, Magnacharger supercharger, Superchip, Gibson single cat-back, 80/100w German head lamps, Warn HS9500i winch with semi hidden mount, Wrangler dual battery kit with red & yellow top Optima batteries, 285/75R16 Goodyear MT/R's, 16x8 Center Line Hell Cats. Needs one more door.
http://hometown.aol.com/ninetyeightfword
#3
01-04-2001, 03:59 PM
Join Date: Dec 1999
Location: Orlando, FL
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Ok so im in Pensacola, FL and my repair manual is in Tallahassee, FL so could anyone volunteer to walk me through the process of changing the speedo gear. I would really apprecieate the help because it is a lot easier to work on my truck at a house with garage rather than an apartment parking lot. Thanks!!!!!
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1997 F150 Reg. cab.,2wd, 4.2 V6, Stepside.
Mods so far: 265/75/16 Pirelli Scorpion ATs, Toolbox, CB Radio, Tint, K&N filter, Kenwood CD player, 2 Fosgate 10s.
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1997 F150 Reg. cab.,2wd, 4.2 V6, Stepside.
Mods so far: 265/75/16 Pirelli Scorpion ATs, Toolbox, CB Radio, Tint, K&N filter, Kenwood CD player, 2 Fosgate 10s.
#4
01-05-2001, 09:26 AM
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Location: Carolina, Puerto Rico, USA
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You can get more info on speedo gears here at www.finer.com/Internet/pages/speedo.htm
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My Ride: 1998 F150 4x4 Lariat Supercab Flareside 5.4L in Oxford White/gold, ORP, Tow Package, 3.55 Gears.
Modifications:
K&N FIPK
Gibson Supertruck Exhaust System
Stepshield door sill protectors
Performance Accesories 3" Body Lift
Superlift 3" lift blocks
Performance Lift Lips
Gabriel Gas Ryder LT VST Shocks
Daystar Front Anti-sway Bar Polyurethane Bushings
Heckethorn Steering Stabilizer
35x12.5R16.5LT BFG All Terrain KO's
16.5x9.75 American Eagle 589's.
Photos at: http://www.communicomgroup.com/jmtruck
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My Ride: 1998 F150 4x4 Lariat Supercab Flareside 5.4L in Oxford White/gold, ORP, Tow Package, 3.55 Gears.
Modifications:
K&N FIPK
Gibson Supertruck Exhaust System
Stepshield door sill protectors
Performance Accesories 3" Body Lift
Superlift 3" lift blocks
Performance Lift Lips
Gabriel Gas Ryder LT VST Shocks
Daystar Front Anti-sway Bar Polyurethane Bushings
Heckethorn Steering Stabilizer
35x12.5R16.5LT BFG All Terrain KO's
16.5x9.75 American Eagle 589's.
Photos at: http://www.communicomgroup.com/jmtruck