Rear End Gear Ratio

[Mason66]

Hi guys, I have a 1963 Savoy with a slant 6 stick.

I want to use it on the highway but also have a bit of power for acceleration.

Right now it has a 4.33 rear end which has a lot of acceleration but I don't know how it will do on the highway.

Do you guys know what ratio would be the best of both worlds?

Also I will be switching the 6 for a 318 so after the switch what ratio should it have?

Thanks

Miguel

 

[5.7 hemi]

Get some 3:23's, good all around gear ratio!

 

[747mopar]

I like 3:55's but highway cruising with 27" tires put's you around 3,100 rpm, 3:23's are a good compromise like 5.7 has said.

 

[Homstead]

I agree! 3:23s are a great all around gear

 

[GetX'd]

I'm with the 3:23 crowd. I. Can't imagine having 4:33 gear in that car with that motor. I only have 3:91 gears in my 440 six pack. And that's plenty.

 

[440roadrunner]

3.55, 3.23

 

[67440chrg]

A all around good ratio is 3:55. With the 318 it should have some power and still go down the open road.

 

[1wild&crazyguy]

5.16's!!! That 4.33 gear isn't enough for that torqueless motor in that whale of a car.:bootyshake: