can somone confirm what a 1978 alfetta gtv 2ltr's final drive ratio should be?
or what method i can use to count the teeth on the pinon / crowhwheel to work out the ratio?
cheers, Brad
Pretty sure it's 4.1:1
Hi Brad,
Divide the number of teeth on the crown wheel by the number of teeth on the pinion, and you have your ratio.
example:
in this case, lets say the crown wheel has 41/10 stamped on it's edge.
this is interpreted as:
41 teeth on crown wheel
10 teeth on pinion
41 divided by 10 = 4.1
ratio = 4.1 turns of the pinion to every single turn of the crown wheel
for this example, ratio is 4.1:1
Cheers.
-Mick
Great info Mick, thanks mate!