4.11 or 3.7 diff ratio??? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

kiwi skid kid · 11-13-2001, 10:56

Your help please. I have to make a choice for my EB2 with an ELXR6 with a big cam. Keen to hear from anyone who is currently running or has run either ratio with an auto box.

11-13-2001, 11:58

Yep E.B on nos has. Said no trouble with auto,but had to buy an electrical piece that puts his speedo readings right. Lower ratio realy livens his car up..

11-13-2001, 12:12

Sorry 3:7 imo

11-13-2001, 14:25

KSK
I ve got a 3:89 (out of a skyline) in my car.
When u change ratios, u need 2 get
a electronic ratio box fitted in
the dash so as 2 give u a correct
speed reading.
I,m happy with my ratio, would
have got 4:11 but 2xcy (complete diff).
Hope this helps.

11-13-2001, 16:21

Check out this Mustang site. They have some good advice on diff ratios.

http://www.alternativeauto.com/tech/50_qa.html

Andrew

11-13-2001, 16:24

EB on NOS - Did the gear change make much difference to your fuel economy & cruising RPM?

Regards
Andrew

kiwi skid kid · 11-15-2001, 06:03

Thanks guys, and Anbo that site was a good help too...cheers!
EB ON NOS - how much did they sting you for the electronic ratio box?? and what revs are you getting in 4th at 100Kms???Really want the 4.11 LSD but am a bit worried it could be a pain motorway cruising as exhaust note gets louder now at 3000rpm with cam and exhaust mods.