Originally Posted by kking08

so if you have 3.21's does the carrier for sure have to be changed? im planning on having my gears installed tommorow so i want to know before i start

Originally Posted by kking08

so if you have 3.21's does the carrier for sure have to be changed? im planning on having my gears installed tommorow so i want to know before i start

Originally Posted by ethang1977

Sorry, but I disagree. I went from 3.21 to 4.88's on dana 30/44. I got the new carrier and didn't put it in. It's working fine 12,000 miles later.
If you MUST buy one, I'll make you a killer deal.

Originally Posted by Curiosity

Yes they can, and from what I understand you do NOT have to get a new carrier, even if you have 3.21 gears. Keep in mind that a 5.13 ring/pinion is going to be somewhat weak in a d30, so if you wheel it or lock it, be careful.

Originally Posted by Curiosity

Glad to get it from Dynatrac (if anyone should know what works and what doesn't it's them), either way, it's not relevant to the OP as he currently has a carrier for 3.73's, so the carrier isn't the problem.

I'm on the fence between 5.13's and 4.88's when I get my new front d44. I'm leaning towards the 5.13's and sacrificing the gas mileage because i have the 2.72 t-case ratio with an automatic trans, so to get a decent crawl ratio I'm gonna either need 4.88's and a new t-case or keep the t-case I have with 5.13's. Also, I don't typically drive >65 mph during my daily commute, so the higher rpms aren't a real problem for me. Just my .02.