Front Wheel Drive - Final Drive Ratio

Marty Knox · 03-16-2013, 12:25 PM

I am wondering what you do on a FWD car to change the final drive ratio. On a rear wheel drive you change the rear gears - what can you do on a FWD? Don't some have chain - can you change the sprockets?

Bob Shaw · 03-16-2013, 08:04 PM

Yes

Mark Yacavone · 03-18-2013, 01:36 AM

Quote:

Originally Posted by Marty Knox

I am wondering what you do on a FWD car to change the final drive ratio. On a rear wheel drive you change the rear gears - what can you do on a FWD? Don't some have chain - can you change the sprockets?

Marty, the GM T125 and T440 (and electronic versions ) use different final drive planets, combined with different chain drive and driven sprockets to attain a variety of ratios.
You can put together a 3.73 final with factory parts.
... Don't know about Ford and Chrysler.

DonatoEng · 03-18-2013, 07:11 AM

The Chrysler 3sp autos had several different FD ratios and transfer gear sets to mix and match. Also some aftermarket transfer gear sets were made.

03-16-2013, 12:25 PM	#1
Marty Knox Member Join Date: Aug 2012 Location: Freeland MI Posts: 179 Likes: 283 Liked 44 Times in 19 Posts	Front Wheel Drive - Final Drive Ratio I am wondering what you do on a FWD car to change the final drive ratio. On a rear wheel drive you change the rear gears - what can you do on a FWD? Don't some have chain - can you change the sprockets? __________________ Marty Knox 3071 STK

03-16-2013, 08:04 PM	#2
Bob Shaw Member Join Date: Jan 2002 Location: Sedalia, Mo Posts: 427 Likes: 280 Liked 290 Times in 58 Posts	Re: Front Wheel Drive - Final Drive Ratio Yes __________________ Bob Shaw V/SA 515

03-18-2013, 07:11 AM	#4
DonatoEng Member Join Date: Feb 2009 Location: Milford, MI Posts: 146 Likes: 11 Liked 8 Times in 5 Posts	Re: Front Wheel Drive - Final Drive Ratio The Chrysler 3sp autos had several different FD ratios and transfer gear sets to mix and match. Also some aftermarket transfer gear sets were made.