33s and 4.10s

I'm pushing 33's thru 4.10's with my 4cyl on my 89 YJ. Flat roads are no problem, large hills slow me down to about 55mph or less. The 6cyl thru

Carl

My I-6 pushes my 33s just fine with 4.10s... Like Carl said, it's not the low speeds where you'll notice, it's the high speeds. There's a definate loss of power up there. That said, if you're not a speed demon, you'll be fine. n.

------------------------------------------ My 82 CJ-7 has 33's and a 4.10 rear end. The I-6 crawls fine.

Norman

I've got a '04 Ruby I crawl great with my 33x12.50 on a 10" wheel....

Larry

Carl, the Rubicon only comes with the 4.0L

Fred, You will notice a power loss. You will also want to re-calibrate your speedometer.

If you check you speedo against a radar you will notice that with 31's you speedo reads about 3 miles and hour faster than you are really going ..... this is my 2nd ruby as I traded the '03 for an '04 for the interest rate. on both Jeeps we found the when you change to a 33 that puts your speedo almost exact. We used a radar from a motorcycle cop. we also use gps for verify the results. You will notice a lost of power running at interstate speeds, but we still car capable of running 90 + on the highway. Good luck.

Larry

I had 4.10s on my 33's and recently had them changed to 4.56.

the 4.10 are ok but I really like the powerful feel of the 4.56's... tho my top end speed isn't as high as it used to be. Haven't switched my speedo gear out yet from the 4.10s... gotta do that some time soon.

Troy

I thought so, but the 4.10's threw me off.

Carl

I have just gone to 33 x 12.50 R 15 BFG MT on 15 x 10 wheels from 31's on 15 x 8's with Dana 44 and 3.73 gears and I-6 and man can I tell the difference. It bogs down way more now. I would like to get new gears but I have got to get the new wheels, tires and 3" lift paid off first.

Tom

Rubis come with the 4.0L and 4.10 gears.

My Rubi came with 4.11 gears. It is a 2005 Unlimited Rubicon.

Patrick ?Ô

Dave Milne, Scotland '91 Grand Wagoneer, '99 TJ

In other words it's false advertising on the part of Jeep.

Patrick ?Ô

yes, and now you really are nitpicking.

But for the sake of completeness.

The Dana 44 came with a 4.10 ish ratio of 45/11 or 4.09 The Dana 30 with 41/10 or 4.10 exactly The Dana 35 came with 37/9 or 4.11.

So whatever Jeep advertised the Dana 30/35 combo to be (4.10 I think) they would have been wrong for one axle.

Dave Milne, Scotland '91 Grand Wagoneer, '99 TJ