gear ratio suggestion

[hidesertwheelin]

Need some opinions on gear ratios. I am moving up to a 35" tire and latter on donw th e road maybe up to a 37". I will also be doing some towing (up to 6500 lbs). I am thinking of using either 4:11's, 4:56's or; 4:88's. It is not a daily driver, but will be used on some 1000 mile round trip hunting trips. I want to use the 4:88's but am not sure if it is to low. Let me know what you think.

 

[rjfguitar]

More info on your vehicle would be nice. A truck with a 350 likes lower gearing a lot more than a 454. Is this a K5?

If it is a K5 in question are you at least 3/4ton? I wouldn't tow 6,500lbs unless you are 3/4 ton or 1 ton converted. Then it shouldn't be much of a problem. I towed 8K a few times with my K5 that is 3/4 converted.

If you are running a 350SBC, are 3/4 ton, have a TH700R4, and don't plan on 37's anytime soon I would go with 4.88's. If it has a BBC or is a non OD transmission than I would go with 4.56's.

 

[4trolls]

I had 411s on my suburban with 35s and it felt about right , it wasnt great for towing up hill but it never realy was anyway. My jeep has 5.38s with 33s and it is a pain in the a$$ to drive it anywhere , 5 miles feels like 1000. but an OD would fix all that

 

[hidesertwheelin]

It's a 90 Suburban.

 

[emoo99]

i have 5.13's with some 35's and it has lots of power, would be great for towing and isn't really that bad with my overdrive (700r4) but i'm limited to about 70 on the freeway.