GEAR RATIO HELP

Chefsonfire · Post by **Chefsonfire** » December 8, 2009, 6:23 pm

O.k... going to run a 300/6 with the mild performance of a clifford intake and exhaust, comp cam and a 4 barrel carb. Trans is a mid 70's floor shifter three speed with overdrive.. I been getting different opinions from people...what do you guys think? Any ideas on a good ratio for the rear end? I want something to handle highway/ daily driver miles. Not sure of tires to run either...more concerned about ratios at the moment..( always easier to change tires..no?)

bluebolt · Post by **bluebolt** » December 8, 2009, 6:40 pm

I did a lot of research while doing my T19 swap, http://www.fordtruk.com/forums/viewtopi ... hlight=t19 here is a chart for the 80's overdrive. You probably already have 3.70's which would be fine with the overdrive.

Ratios RPM 65 MPH in top gear

3.55 2256
3.73 2370

ICEMAN6166 · Post by **ICEMAN6166** » December 8, 2009, 7:39 pm

the wifes 66 has 3.50 gears with the clifford intake and headers, has the 4 speed trans.

edselcomet · Post by **edselcomet** » December 13, 2009, 5:10 pm

tire size makes a difference. try this calculator. http://www.ringpinion.com/Calc_RPM.aspx
keith

GEAR RATIO HELP

GEAR RATIO HELP

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