Gear ratio woo`s

[Solarman]

I have a Ford 8" and it has 3.4:1 ratio how will this compare to the MGB 3.9:1. Shoul I change this? what are the pros and cons?

[Moderator]

I think you might find Dan Masters' nifty calculator very helpful - this link will open as an Excel spreadsheet.

http://www.britishv8.org/Articles/chart.xls

If you enter gear ratios, tire diameter, etc., the calculator correlate engine speed (shift points) to road speed for you.

[Citron]

Curtis,
That is a great spread sheet.  I am going to try a 3.0 ratio.  It will put RPM at about 2200 at 80.  Just where I think it should be.
Will have to run again at MAxton and see if I'm faster that was y.  Now I am at 110 at 5700 in third gear. ( 4 speed Auto.)
The new gear will put me down under 4000 at the same speed.  

Steve

[NixVegaGT]

That's a hot car, man! I love the custom headlight setup. What engine are you running now? If it's a transplant with more power I think you'll like the Ford ratio better. With more torque you won't need the extra gear and you can lower your crusing RPMs.

[Solarman]

It is a Ford 302 400hp to the wheels and 12.1 sec 1/4 mile . Light are Dodge Neon

Thanks man