RB26powered74zcar Posted March 21, 2004 Share Posted March 21, 2004 I will be using a RB25 trans without a speedo cable like the 240 trans has, as their is only a electronic sensor on it. What are my options? Anyone solved this issue?? thanks joel Quote Link to comment Share on other sites More sharing options...
Guest huskers Posted March 21, 2004 Share Posted March 21, 2004 I believe you need a mechanical-to-electronic speedo converter. http://www.dynatechmotorsports.com sells 'em for @$200. Quote Link to comment Share on other sites More sharing options...
hanomon Posted March 21, 2004 Share Posted March 21, 2004 If its a GM trany, I just removed the VSS off my brand new T56 to convert over to a direct drive type speed-o. Any of the old parts you need for that pulse sensor/electronic arrangement I'll let you steal from me dirt cheap. Quote Link to comment Share on other sites More sharing options...
Oltmann Posted March 21, 2004 Share Posted March 21, 2004 Do you want to keep the stock guage? If not you can probably use one of the electronic speedometers on the market. Most of us LT1 guys are using a 5" Autometer speedo. It will work under the following parameters: • Pulse rate generated proportional to vehicle speed. • Output within the voltage ranges listed below: 4.0 to 16 V peak (Square Wave), 3 wire 2.0 to 120 V peak to peak (Sine Wave), 2 wire It would be nice if you had access to an oscilloscope to verify the output is within these parameters, however I'd bet it will work. Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted March 21, 2004 Author Share Posted March 21, 2004 I now have the Autometer electical tac in my dash, so putting the speedo would just finish up the pair... So are you saying the Autometer speedo works with "most" trans with the elect speedo sensor? Quote Link to comment Share on other sites More sharing options...
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