diff ratio - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 05-09-05, 10:52 PM Thread Starter
Registered User
Join Date: Apr 2005
Location: sydney
Posts: 6
diff ratio

Afternoon all
Just a question about diff ratios.

Car is a stock 1969 XW 351windsor auto. Diff ratio at the moment is 3.25.

If you change the diff ratio to say a 3.5 or even 3.7 you obviously get better take off. My question is do you also get a better 1/4mile time or does the car rev out before the finish line and thus risk an even worse time???


xw351 is offline  
Sponsored Links
post #2 of 4 (permalink) Old 05-09-05, 10:58 PM
Prostreet Wagon
fat071's Avatar
Join Date: Jan 2005
Location: Brisbane
Age: 41
Posts: 56
Re: diff ratio

all depends what you want. do you want a faster take off? or a quicker e.t? myself i would start at the motor and box first then the diff.

Brisbane Car Club Check it out
Built-it Performance V8 Car Club (click here)

Burnouts, Cruises, Car Shows
V8's & Tuff 6's ONLY.
BIG Mick Race Engines
(Click For A Quote)
fat071 is offline  
post #3 of 4 (permalink) Old 05-10-05, 04:20 AM
Posts: n/a
Re: diff ratio

turbocharge it and you will love your 3.25's
post #4 of 4 (permalink) Old 05-10-05, 05:41 AM
speedkills so snort Slowr
crzyxf's Avatar
Join Date: Feb 2002
Location: Endeavour Hills
Posts: 325
Re: diff ratio

No pretty sure you wont rev out the car b4 the finish line. A friend of mine put 3.9s on his XW and got heaps better 60ft time (but that was with a 3 grand stall!!)

On the Seventh Day God Created FORD
New Ride ------> 71 XY 351 9" 3.9 C10
Just got it started Animalistic I tell ya
crzyxf is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Trans | Driveline

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome