Scott214 0 Report post Posted July 11, 2009 I have a 2007 214FS, 350MAG, Bravo I (1.50 gear ratio). With a 21" SS 3-blade prop, the tach registers a max RPM of 4300 and top speed of 55 on the speedo. With a 19” SS 4-blade, 4,400 rpm at 54 MPH. The tach is set for an 8 cylinder engine, but simply couldn’t be reading correctly. After the tach stopped working this year, it was replaced and now reads a max of 3,800 RPM at 54 MPH with the same 19” 4-blade prop. The engine is rated for 4,800 to 5,200 RPM. Does anyone have any suggestions on what could be wrong with my tach reading? Share this post Link to post Share on other sites
