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72addict · 12-15-2003, 05:21 AM

I know that the 700r4 trans was made with both mechanical and electronic speedos, so the parts are available for the conversion for the automatic. I have also replaced the speedo gear with a shudder wheel in a np205 tcase swap I did. The inside splines are exactly the same, so it was a dirrect swap. My point is, see if the trans you are running was produced prior to the electronic speedo ('87 and down I think). Even if not, the sensor ring will probably be a dirrect swap with a speedo pickup gear. Then you would need to modify the tailhousing (if it has one) to accept the speedo cable. It helps if you know a machinist for this. It may be cheaper than $280

12-15-2003, 05:21 AM	#3
72addict Registered User Join Date: Mar 2000 Location: Mason MI, 48854 (strikezone of the mitten) Posts: 894	I know that the 700r4 trans was made with both mechanical and electronic speedos, so the parts are available for the conversion for the automatic. I have also replaced the speedo gear with a shudder wheel in a np205 tcase swap I did. The inside splines are exactly the same, so it was a dirrect swap. My point is, see if the trans you are running was produced prior to the electronic speedo ('87 and down I think). Even if not, the sensor ring will probably be a dirrect swap with a speedo pickup gear. Then you would need to modify the tailhousing (if it has one) to accept the speedo cable. It helps if you know a machinist for this. It may be cheaper than $280 __________________ 1957 Cameo