Rear end ratio help

[smythge]

I am trying to decide between 4.11s and 3.91s Not worried about driving the car on the highway, just looking for the best ETs. Heres my combination:

65 Dart 2900 lbs
440 with KB 10.1 pistons, Mopar .509 / .248@50 cam, FBO ignition, holley 800 DP, 2800 hughes stall/ 26" tall Mickey Thompson drag/street radial. Ford 8.8" posi rearend, currently running 3.55s give me your suggestions.

Greg

 

[388dart]

4.11s w/ 28" tires. works in my buddy's 440 - 65 just right.
I'm saying 4.11s cause you will burn those 26" tires up in no time no matter what gear you have.

 

[340mopar]

The ratios are so close to the same that it really wouldn't matter. I would just buy the one that happens to be most inexpensive when you go looking.

 

[383man]

We have 3.91's in my boys Dart. Its a stock stroke 400 and he uses 26 x 9.5 Hoosier QTP tires. They hook good and he shifts at 6200 and traps about 6400. You longer stroke 440 may like the 3.91's better. Ron

 

[Coyote Jack]

383man is right on. Unless you plan on really winding that beast up go with the 3:91's. If you had 28" tires I would say the 4:11's.


Jack