What is the real difference between the auto and standard pinions?

diabolical1 · 01-12-2011, 03:26 PM

can't speak on the Gen II cars, but i've owned Gen I cars with similar final ratio differences (3.91 versus 4.08). i will say this, if you were to put a stopwatch on it, there may be a discernible difference, but as far as my tooling around town was concerned, i didn't notice a difference.

as far as gas mileage was concerned, i can't say i noticed a difference there, but in all fairness, i only started tracking mileage qunatitatively when i was running the 13B (Dell'Orto and exhaust) with the 3.91 rear and i averaged 24 to 25.5 MPG on the highway. i didn't feel i needed to calculate city mileage because i commuted almost exclusively on the highway.

i hope this helps you some.

01-12-2011, 03:26 PM	#11
diabolical1 I have radioactive semen Join Date: Jul 2008 Location: in a bottle of Glenfiddich Posts: 249 Rep Power: 17	can't speak on the Gen II cars, but i've owned Gen I cars with similar final ratio differences (3.91 versus 4.08). i will say this, if you were to put a stopwatch on it, there may be a discernible difference, but as far as my tooling around town was concerned, i didn't notice a difference. as far as gas mileage was concerned, i can't say i noticed a difference there, but in all fairness, i only started tracking mileage qunatitatively when i was running the 13B (Dell'Orto and exhaust) with the 3.91 rear and i averaged 24 to 25.5 MPG on the highway. i didn't feel i needed to calculate city mileage because i commuted almost exclusively on the highway. i hope this helps you some.