3:42's and 285's

[benz88]

So Im getting some 285/75/16's and Currently my OBS 1500 Diesel has 3:42's in it with the G80/14bolt. Should I gear it?

 

[squeaky3]

285s and 3.42 wont be that bad, esp not with the diesel

ive ran 36 TSLs and 3.42 for awhile before i regeared my truck

 

[Old Goat Ninja]

Diesel? I honest'y don't know a lot about the older diesels. But I had an 07 Duramax that was lifted with 37's, and it was never regeared and that truck was still a rocket ship. Diesel has a lot of torque, at least the one I had did, and no problem over coming the much bigger tires.

 

[benz88]

I'll try it out, It should put my RPM's around 1400 on the highway.

 

[LiftedGmc355]

You'll be fine I had 35 ssr swampers with 3:42 gears and it went fine. 285s you probly wont notice any difference

 

[benz88]

You'll be fine I had 35 ssr swampers with 3:42 gears and it went fine. 285s you probly wont notice any difference

I'm just worried about not having enough passing power on the highway haha. After looking at charts I should regear it to 3:91's or close to it. But I'll give this a go

 

[Vortec Lover]

you'd be just fine- only a touch bigger than stock z71 tires

 

[rccoco]

Like everyone said youll be fine. I had 285s with 3:42 on my suburban and it was no problem at all. Ive got 35s right now with 3:42 and its still good and lots of passing power on the highway

 

[ChrisAU]

Yeah you'll be fine, I'm running 3.42's and 35's. Mine isn't a DD, but I don't have any complaints. I did add an external tranny cooler too.

 

[benz88]

Wicked, Thanks guys. I'm getting the trans and diff's serviced this week coming up so I'll see what they say about a cooler.