rpms and gears

[JEM]

i have a sm456 and a 350 and i am wondering what rpms are good for highway use. i want 4.56 gears but 4.10s give me better rpms

 

[JEM]

O and i have 35" tires

 

[bucket]

You would be fine with 4.10's I think. Personally though, I'd go with 4.56's if given the choice because I'm willing to sacrifice a little MPG for more power. My K30 has a 454, th400, 4.56's and 36's and I wouldn't change a thing.

 

[JEM]

what kind mpg do you get? i would prefer the 4.56s for the power. and i normally only go around 55 or 60 and 65 or 70 for short stetches.

 

[bucket]

what kind mpg do you get? i would prefer the 4.56s for the power. and i normally only go around 55 or 60 and 65 or 70 for short stetches.

I've only been able to accurately figure MPG once, due to an inop speedo. I got 10 mpg with mixed driving.

 

[JEM]

Alrighty thank you sir.