Sully69 Posted October 10, 2018 Share Posted October 10, 2018 Sully69, find a F600 or F800 before ~1992 with a 370 V8 gas engine and you will likely find a 4000 or 4500 RPM tach. It will work with your truck as long as it has the 4 lugs on the back. Later ones [after ~1992] had 3 lugs and I believe will work only with V8. https://i.ebayimg.com/images/g/eCwAAOSwKcVabjTl/s-l1600.jpg Thanks for the suggestion on the larger trucks, never thought about that. Someone mentioned a JY around here that deals only in that type truck, just have to remember who it was & where it was. Or search that internet thing I keep hearing about! Link to comment Share on other sites More sharing options...
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