Speedo Gear for 4.10 Mod

[marauder'10]

I just upgraded to the 4.10 gears and need to change my speedo gear in the transmission. Does anyone know which one I need and perhaps an easy place to get one? Thanks

[Mike M]

I didn't know they still used speedo gears.

[WPG_Merc]

Changing the speedo for the 4:10s is in the tune,I don't know if there is a gear to change
other then upgrade the tune itself.

[Ms. Denmark]

^^^Yup, just need a "4:10 tune". You can contact Lidio at Alternative Auto and Marty at Mo's Speed Shop, right here in our Vendors Forum. Both are experts in tuning Marauders and have 4:10 tunes available. Plus they can answer all your questions. Lot's of us have used one or both shops with excellent results. Highly professional and honest.

[marauder'10]

^^^Yup, just need a "4:10 tune". You can contact Lidio at Alternative Auto and Marty at Mo's Speed Shop, right here in our Vendors Forum. Both are experts in tuning Marauders and have 4:10 tunes available. Plus they can answer all your questions. Lot's of us have used one or both shops with excellent results. Highly professional and honest.

Thanks I thought that but was told different. Ive already been in touch with Lidio and will be getting a tune within the next few weeks. Appreciate the info.

[WPG_Merc]

"Yes I would agree".Mo's shop helped me all the way to MV XI
They could send a 410 tune through the email.

[RF Overlord]

I didn't know they still used speedo gears.They don't. The speedo is driven by the VSS (Vehicle Speed Sensor) on the tailshaft housing.

[Roadwarrior]

They don't. The speedo is driven by the VSS (Vehicle Speed Sensor) on the tailshaft housing.
:concur: Speedometer gears seems to have been made as obsolete as chrome bumpers on a car.

[EMAS]

They don't. The speedo is driven by the VSS (Vehicle Speed Sensor) on the tailshaft housing.


And how is the VSS driven? By a gear.


http://s7d9.scene7.com/is/image/GenuinePartsCompany/NWM?$doubleclick$&$Product=GenuinePartsCompany%2 F50491

[fastblackmerc]

And how is the VSS driven? By a gear.


http://s7d9.scene7.com/is/image/GenuinePartsCompany/NWM?$doubleclick$&$Product=GenuinePartsCompany%2 F50491

True... but you can't change the gear to affect the speedo reading.

[justbob]

You can on tremec's, but don't know of a reason too as they can also be recalibrated on a dyno like mine was. But I've never heard of swapping the gear in a 4R70? I would assume there is different ones, but that would only solve speedo issues and not address the shift schedule.


Self proclaimed Builder Of Badassery.

Buy it, Break it, Build it BETTER.
"Since 2004"

[RacerX]

True... but you can't change the gear to affect the speedo reading.
Yes, you can. 4R70Ws have been around a long time and this is how we used to do it:

http://www.minnesotacats.com/misc/speedoGear.jpg

BUT!!! It is better to just do it in the tune.

[Krytin]

I thought the speed sensor on the MM's worked off a tone ring/reluctor on the transmission tailshaft . The sensor counts the teeth and the tune calculates speed based on tire size/axle ratio.

[kmastl]

I have an extra unlocked xCal2 which will do what you want. PM me if you are interested.

[fordmike65]

Yes, you can. 4R70Ws have been around a long time and this is how we used to do it:

http://www.minnesotacats.com/misc/speedoGear.jpg

BUT!!! It is better to just do it in the tune.


Had to do this when I installed the AOD(4R70W insides) and 3:25 gears in my '64Fairlane. Pulled a gear out of a LTDII. Worked fine, but just to calibrate the speedo.

[Vortech347]

I've never seen/heard of anyone changing a VSS drive gear in an MM.

[fastblackmerc]

I've never seen/heard of anyone changing a VSS drive gear in an MM.

Exactly!!!!!!!!!!!!