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Blue68Coupe · 11-03-2006, 09:08 AM

I just wanted to get everyone's thoughts on speedometer gear selection. I have a 1968 289 with a C4. I just installed a set of 3.55 gears. My rear tires are 24inches tall 14 inch rims.

My math says a 21 tooth gear would be best but I am being told a 20 tooth is best.

Anyone have any thoughts?

11-03-2006, 09:08 AM	#1
Blue68Coupe 68 Coupe 289 Join Date: Apr 2005 Location: North carolina Posts: 44	Speedometer gear recomendation I just wanted to get everyone's thoughts on speedometer gear selection. I have a 1968 289 with a C4. I just installed a set of 3.55 gears. My rear tires are 24inches tall 14 inch rims. My math says a 21 tooth gear would be best but I am being told a 20 tooth is best. Anyone have any thoughts? __________________