Tom Fremont Posted January 22, 2019 Report Share Posted January 22, 2019 What happens to 3rd O/D when the ratio is 28%? Wouldn't want the shift/ratio sequence to be 1st, 2nd, 2nd O/D, 3rd, 4th, 3rd O/D, 4th O/D. Cheers, Tom Quote Link to post Share on other sites
rogerguzzi Posted January 22, 2019 Report Share Posted January 22, 2019 Hello All I have a 28% overdrive on my Spitfire 1500 it does make it a bit tall sometimes but having 3rd + OD = 4th it is nice when at border line speeds(just the flick of a switch) Then 4th OD gives me 70 mph @ 3000rpm Its not a standard engine fast road cam, block decked, crank balanced, rods polished and shot peened and ITB fuel injection plus some head work etc Roger Quote Link to post Share on other sites
North London Mike Posted January 22, 2019 Report Share Posted January 22, 2019 You just can't beat a 7 speed TR, better to drive, cheaper to use (mpg) and a better return than money in the bank Whats not to like.......... Quote Link to post Share on other sites
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