4r70w Swap complete... but speedo no worky

[drusmith]

Tried a few different speed sensors and none seem to work, does any one know what speed sensor i need to use with my 03 Cobra to make the speed accurate. Right now on the highway I am lucky if speed shows 40mph.


Here are some pictures of the swap.

I still reach for this pedal! LOL :shrug:

Any one wants this? Complete with D&D Street/strip build, 500 miles on rebuilt trans, cross member, McLeod Twin disc, Bell house and Flywheel.

 

[LordVader04]

Any Dyno #s with the auto yet

We basically have the same set up, :beer: just wondering if you have had it tuned with the auto yet, and what valve body are you using?

 

[vadorsnake04]

I don't know if you have adjusted it in your SCT yet? But the output gear on the 4R70W outputs less pulses per MPH than the T-56. The reluctor wheel in the Output shaft has 6 reluctors instead of 12 from the T-56/T3650.
Here is what needs to be changed in the SCT software so that the speedometer works correctly. Scalars>Systemswitches>Number of holes for OSS Sensor - Change it to 6 instead of 12.

 

[Wicked46]

It's in the tune.... Have it changed and your good to go. Mine was the same way

 

[boost42]

Mine was reading 160 when I was going 60-70. Just like said above. Change OSS to 6 instead of 12. Make sure to put the exact tire your running as well

 

[KingKiller]

I'm having a similar problem. I verified that my tune reflects 6 for the OSS sensor, but the speedo reads around half...any ideas?

 

[YelOSnake]

How much for your old trans?