Hi everyone;

Does anyone know of a website that can tell me the MPH, and RPM the A4 transmission would be doing, based on different rear end ratios.

I have the ratios of the A4 transmission.

Example: What RPM's would the engine turn at 80MPH with 4.10 rearend gears?, same question with 3.73.

Quite a while back, someone posted a sight that gave this information, however using the "search" feature, I can not find it.

Thanks in advance.

SteveC <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

Here you go Steve <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

http://www.f-body.org/gears

good luck
John

 

Thanks so much John, that was exactley what I was looking for. Shortly I will be changing my rearend gears in my Z28 with A4 transmission, and I wanted to weigh out all my options between 3.73, and 4.10.

This gives me all the ammo I need to make the proper decision.

SteveC <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

Steve,
Here's a couple more for you to play with. <img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />

Speed for RPM range comparing rear gears

Speed for RPM range

later
John

 

Keep in mind that with an automatic, there will always be some converter slippage, except when the torque converter is locked-up... All converters will differ on their efficiency, but a good ballpark would be around 5-6% slippage...

Just FYI... <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />