4 speed automatic
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Cross-Country
Joined: Apr 2017
Posts: 55
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4 speed automatic
I'm thinking of putting a 2002 small block and 4 speed auto in my 66 .can anyone tell me how to get the speedometer to work as the transmission has electronic output for speedo thanks
FTE Legend
Joined: Nov 2015
Posts: 30,828
Likes: 4,094
From: Angier, NC
Are you using the 02 ECM / PCM to run the motor & trans?
What you using for gauges, them from the 02 grafted into the dash of your truck?
IIRC the ECM / PCM gets its reading from the rear axel tone ring think on the R&P but not sure.
If so and you don't swap in the rear axle for this from the 02 think some have used a sensor that reads off the drive shaft.
You stick on a reflective tape and the "eye" sees this and sends the signal to the ECM / PCM to make everything work.
Now I don't know where I seen this posted and if it will give the right reading or not.
If not for needing it to run the motor / trans I would go with an after market GPS speedo like from SpeedHut gauges
Dave ----
What you using for gauges, them from the 02 grafted into the dash of your truck?
IIRC the ECM / PCM gets its reading from the rear axel tone ring think on the R&P but not sure.
If so and you don't swap in the rear axle for this from the 02 think some have used a sensor that reads off the drive shaft.
You stick on a reflective tape and the "eye" sees this and sends the signal to the ECM / PCM to make everything work.
Now I don't know where I seen this posted and if it will give the right reading or not.
If not for needing it to run the motor / trans I would go with an after market GPS speedo like from SpeedHut gauges
Dave ----
Fleet Mechanic
Joined: Nov 2005
Posts: 1,838
Likes: 421
From: Lehigh Valley, Penna.
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