Anyone who runs 4.88 gears?
Member
Joined: Nov 2014
Posts: 167
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Year: 1998
Model: Cherokee
Engine: 4.0
Not trying to argue with you, just playing advocate, but show me anything that proves there was a failure because it was "weaker".
I agree it there is less contact and the pinion is smaller. But 75% of failures I've seen were contributed to improper install, and the remaining 25% were a situation that would have broken even 4.56. The only thing you really need to worry about if running open carrier is deflection. Even then it's not as bad as everyone makes it out.
You want the deeper gears for a crawler, why do you think people put up to 5.38 and beyond under their axles, not a in a 30, but still deep.
We're not talking about dedicated crawlers, op asked about towing, and with his vehicle weight and what he plans to do 4.88 are really the only way to go. I was just saying he doesn't need to be worried about his 30 exploding if he does 4.88.
I agree it there is less contact and the pinion is smaller. But 75% of failures I've seen were contributed to improper install, and the remaining 25% were a situation that would have broken even 4.56. The only thing you really need to worry about if running open carrier is deflection. Even then it's not as bad as everyone makes it out.
You want the deeper gears for a crawler, why do you think people put up to 5.38 and beyond under their axles, not a in a 30, but still deep.
We're not talking about dedicated crawlers, op asked about towing, and with his vehicle weight and what he plans to do 4.88 are really the only way to go. I was just saying he doesn't need to be worried about his 30 exploding if he does 4.88.
Thread Starter
Newbie
Joined: Feb 2012
Posts: 14
Likes: 1
From: Tucson, AZ
Year: 2000
Model: Cherokee
Engine: 4.0
To All;
Thank you for all your information and discussions. I appreciate the assistance and lessons greatly.
I am ordering the 4.88 though have to wait till April for delivery.
John
Thank you for all your information and discussions. I appreciate the assistance and lessons greatly.
I am ordering the 4.88 though have to wait till April for delivery.
John
Thread Starter
Newbie
Joined: Feb 2012
Posts: 14
Likes: 1
From: Tucson, AZ
Year: 2000
Model: Cherokee
Engine: 4.0
Update:
I finally have 4.88 gears installed and have towed a 3400 lb. trailer (loaded with water, etc) with my 4600 lb Cherokee (loaded with armor, steel bumpers, roof rack, etc).
Conclusion: I can tow to my hearts desire though on really hot days, IE: 110 up a grade, I have to watch my temperatures (will upgrade radiator and tranny cooler).
I run at top speed of 50 to 60 mph at 3k to 4k in third gear with 31" inch tires....so slow to go is the rule, especially up the 6% grade runs into the mountains (Tucson to N. AZ & once to Colorado)
Thanks for all your help and advice.
I finally have 4.88 gears installed and have towed a 3400 lb. trailer (loaded with water, etc) with my 4600 lb Cherokee (loaded with armor, steel bumpers, roof rack, etc).
Conclusion: I can tow to my hearts desire though on really hot days, IE: 110 up a grade, I have to watch my temperatures (will upgrade radiator and tranny cooler).
I run at top speed of 50 to 60 mph at 3k to 4k in third gear with 31" inch tires....so slow to go is the rule, especially up the 6% grade runs into the mountains (Tucson to N. AZ & once to Colorado)
Thanks for all your help and advice.
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