3.90's?

[Blackbird1084]

Ok I'm making a couple of changes to the car before the next trip to the track one of them being a set of 3.90's. Should I expect about 2 tenths out of these? I didn't get 4.10's because I don't want to take a chance at shifting to fifth.

 

[stang72]

Depends.Assuming you can hook,I don't see why you couldn't get 2 tenths.

 

[Simon]

You will be near 130 mph in 4th gear with a 26" tire with 4.10s.

 

[Blackbird1084]

At what rpm? I was figuring it up at 6600@123mph which is far beyond the power band with stock cams. If I had cans I'd push it to 7k and throw in some 4.30's.