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Speedo Sender Drive Gear INFO

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This list may be helpful for some,

to achieve an accurate Speedometer, vs chosen diff ratio and wheel/tyre size.

 

Diff ---- Trans -- Rim -- Drive Gear --- Teeth -- Color --- Driven Gear -- Teeth -- Color


3.23 -- 4 Auto --- All -- XA-17285-C --- 8LH -- Yellow -- XE-17271-D -- 21 LH -- Light Green
3.23 -- Manual -- All -- XAP-17285-A -- 8LH -- Yellow -- XE-17271-D -- 21 LH -- Light Green
3.08 -- 4 Auto --- All -- XA-17285-C --- 8LH -- Yellow -- XE-17271-C -- 20 LH -- Brown
3.27 -- Manual -- All -- XAP-17285-A -- 8LH -- Yellow -- XE-17271-D -- 21 LH -- Light Green
3.27 -- 4 Auto --- All -- XA-17285-C --- 8LH -- Yellow -- XE-17271-D -- 21 LH -- Light Green
3.45 -- Manual -- 15" - XAP-17285-A -- 8LH -- Yellow -- XE-17271-E -- 22 LH -- Grey
3.45 -- 4 Auto --- 15" - XA-17285-C --- 8LH -- Yellow -- XE-17271-E -- 22 LH -- Grey
3.45 -- Manual -- 16" - XAP-17285-A -- 8LH -- Yellow -- XE-17271-F -- 23 LH -- Black
3.45 -- 4 Auto --- 16" - XA-17285-C --- 8LH -- Yellow -- XE-17271-F -- 23 LH -- Black

 

2.77 - Auto/Man - All ------------------------ 8LH - Yellow ----- XE-17271A - 19LH --- Purple
2.92 - Auto/Man - All ------------------------ 8LH - Yellow ----- XE-17271B - 19LH --- Pink

 

http://www.fordmods.com/documents.php?d=30

 

Purple 19 XE17271A
Pink 19 XE17271B
Brown 20 XE17271C
Light Green 21 XE17271D
Grey 22 XE17271E
Black 23

XE17271F

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GT shops, Rare Spare, etc   have the FMX driven gears for your diff ratio, but, I got the "right" coloured one for my 3.5 gears, but speedo was still out by 20 kays, so had the speedo recalibrated. All good. 

 

Part # SDG2 and SG17, 18, 19   at GT Ford Performance.

 

 

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i played the game with fmx /c6 speedo drives with my 400/c6 combo and it drives ya mad at $50 a pop thinking you got it right ,i still have a few in the garage i ended up getting the lowest tooth count 15 i think and it got me within 6km of correct with 15'' wheels and 225/60/15 ,if i went a 70 or 75 series tyre like the big yank tanks had it would have been near perfect.

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From memory mine was out, but it 8+ years ago since ive run the fmx in the car so cant really remember. It was damn near perfect with whatever drive was in the single rail with 235/65r14 tyres

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13 hours ago, bear351c said:

You can get one to fit out of a JEEP, but the pitch is slightly different, and it'll need changing every 6 months. Cant remember where I read that... 

 

 

Here's some more JEEP info for you -

the 80's/90's glovebox locks, are the same as XD-XH,

except colour-coded to the Jeep interiors.

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