[pi71]

im going from 2:80 to 3:00 posi ,other than traction, what differences will i see, rpms? low end, topend??

 

[tbear1]

Going from a 2.8 to a 3.0 will be a rather subtle difference. But generally, you should get quicker acceleration. Your cruising engine speed will go up proprotional to the increase in final drive ratio. Your speedometer will also be off a bit. The NPD catalog used to have speed calculators to help pick the correct speedo gear. Give it a look.

Hope that helps,
Glenn

 

[NKau]

Theoretically, you should see better acceleration, but in reality, you won't see much difference at all; 3.00's are still a very shallow gear. Slightly higher rpms at cruising; probably nothing too noticeable. You should find it rather difficult to break traction with 3.00's and a posi if you are running a small engine.

 

[toadfish]

You won't notice much of a difference in accelaration, 2:80 is going to give better fuel economy, slightly.In my opionion i would go to a 3:50 posi rear, that will certainly make youre pony take of faster/forums/images/icons/smile.gif

 

[motorhead]

you will have 7% more power off the line, 7% higher rpm on the freeway and loose about 7% gas milage.

 

[white66coupe1]

Do limited slip or Posi come in a 3:00 or a 3:25 for the standard early Ford 8" rear?

Thanks, Greg.

 

[NKau]

I'm not sure if they came that way, but I know you can make it that way /forums/images/icons/smile.gif

 

[Guest]

Currie Enterprises in Tustin, California will have them. Sorry I don't have the phone number for you.