High pinion Dana 60s?
CF Veteran
Joined: Oct 2016
Posts: 1,535
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From: CA
Year: 1994
Model: Cherokee (XJ)
I hope I didnt sound like I have an unlimited budget guys. I wont be dropping a ton of cash on this thing all at once. I'm going to buy the rear axle and build it first, then the front and then order the lift. It will eventually get a 4link rear setup. I may go ahead and do it in the beginning.
I'm not a full on fabricator. I do have a buddy that's pretty good but he stays pretty busy so I'm kind of looking for bolt in stuff to save time.
I want to drive it in the shop on Friday in stock form and drive it out Saturday evening with lift, wheels, tires and axles. Do I have to? No its not my only ride. I did buy it mainly for a trail rig and hunting rig and well now I drive it more than my truck.
I just want something I can drive up to Arkansas and do some wheeling and drive home. Granted I will be way more likely to take it easier than some probably would. I just want to know that I'll have good parts under it if I do decide to beat on it. Here in Mississippi we really don't have anywhere to do any real crawling. I may decide to trailer it around some and really beat on it. I wouldn't feel it to be as necessary to trailer it with big parts.
I'm not a full on fabricator. I do have a buddy that's pretty good but he stays pretty busy so I'm kind of looking for bolt in stuff to save time.
I want to drive it in the shop on Friday in stock form and drive it out Saturday evening with lift, wheels, tires and axles. Do I have to? No its not my only ride. I did buy it mainly for a trail rig and hunting rig and well now I drive it more than my truck.
I just want something I can drive up to Arkansas and do some wheeling and drive home. Granted I will be way more likely to take it easier than some probably would. I just want to know that I'll have good parts under it if I do decide to beat on it. Here in Mississippi we really don't have anywhere to do any real crawling. I may decide to trailer it around some and really beat on it. I wouldn't feel it to be as necessary to trailer it with big parts.
Thread Starter
Junior Member
Joined: Jul 2016
Posts: 35
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From: Magee MS
Model: Cherokee
600 to the wheels 
I'll eat my hat if you can show me those dyno numbers on 35" tires
you're building a 600hp hunting rig
this thread is smelling more and more fishy
I dare you to put a D44 in there
gee I wonder what the weight difference is between a f350 and a Cherokee
breaking 30 spline stubs under a full size is very common
I'll eat my hat if you can show me those dyno numbers on 35" tiresyou're building a 600hp hunting rig
this thread is smelling more and more fishy I dare you to put a D44 in there
gee I wonder what the weight difference is between a f350 and a Cherokee
breaking 30 spline stubs under a full size is very commonI don't expect to see 600 with 35s... I will have the ability to jet it up and do it.
I wont deny a set of drag radials may just make their way onto it at some point. But yep its purpose is hunting and crawlin.
a D44 isn't something I've looked at. Im thinking D60 rear and either a D60 or 9" front
Yeah that's only a 7,000lb ish weight difference.
CF Veteran
Joined: Jun 2011
Posts: 8,014
Likes: 17
From: Louisville,KY
Model: Cherokee
600 to the wheels I'll eat my hat if you can show me those dyno numbers on 35" tires
you're building a 600hp hunting rig this thread is smelling more and more fishy
I dare you to put a D44 in there
gee I wonder what the weight difference is between a f350 and a Cherokee breaking 30 spline stubs under a full size is very common
I'll eat my hat if you can show me those dyno numbers on 35" tiresyou're building a 600hp hunting rig
this thread is smelling more and more fishy I dare you to put a D44 in there
gee I wonder what the weight difference is between a f350 and a Cherokee
breaking 30 spline stubs under a full size is very common
CF Veteran
Joined: Jun 2011
Posts: 8,014
Likes: 17
From: Louisville,KY
Model: Cherokee
I don't expect to see 600 with 35s... I will have the ability to jet it up and do it.
I wont deny a set of drag radials may just make their way onto it at some point. But yep its purpose is hunting and crawlin.
a D44 isn't something I've looked at. Im thinking D60 rear and either a D60 or 9" front
Yeah that's only a 7,000lb ish weight difference.
I wont deny a set of drag radials may just make their way onto it at some point. But yep its purpose is hunting and crawlin.
a D44 isn't something I've looked at. Im thinking D60 rear and either a D60 or 9" front
Yeah that's only a 7,000lb ish weight difference.
CF Veteran
Joined: Nov 2011
Posts: 7,387
Likes: 10
From: City of Trees, CA
Year: 93 2 door
Model: Cherokee
Engine: 4.0
you've gone from wanting bullet proof to settling for a D60 rear axle. A rear 60 is fairly undesirable, especially when 14 bolts are so plentiful and so proven. Hell, D60 fronts aren't even that desirable anymore unless they are the super duty version. spend your money on the front axle and slap a shaved 14 bolt in back they are so affordable and strong. Especially don't put a rock jock 60 in the rear like you were saying, coast side high pinion rear is just asking for trouble
CF Veteran
Joined: Jan 2016
Posts: 1,242
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From: Newport News, VA
Year: 96 & 88 4 dr Cherokees
Why not ?? if the engine makes it, it makes it...tire size doesn't matter.
You gonna tell me my friends car that has a dyno proven 1100 hp engine in it is gonna make less hp if I slap some 40" tires on it ??
or more if I put some 12" tires on it ??
You gonna tell me my friends car that has a dyno proven 1100 hp engine in it is gonna make less hp if I slap some 40" tires on it ??
or more if I put some 12" tires on it ??
Thread Starter
Junior Member
Joined: Jul 2016
Posts: 35
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From: Magee MS
Model: Cherokee
you've gone from wanting bullet proof to settling for a D60 rear axle. A rear 60 is fairly undesirable, especially when 14 bolts are so plentiful and so proven. Hell, D60 fronts aren't even that desirable anymore unless they are the super duty version. spend your money on the front axle and slap a shaved 14 bolt in back they are so affordable and strong. Especially don't put a rock jock 60 in the rear like you were saying, coast side high pinion rear is just asking for trouble
I'll definitely take that into consideration. I just thought the Dana 60 would be my best option. For that matter I have a 14 bolt laying around that I had planned to use for another project.
Thread Starter
Junior Member
Joined: Jul 2016
Posts: 35
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From: Magee MS
Model: Cherokee
drivetrain loss does play a big roll in RWHP numbers. a NA torque converter can hurt RWHP, an Nitrous/turbo converter would make more power. A 28" drag radial will make more RWHP than a 28" bias ply slick. A lighter weight 35" street tire will put down more power than a heavy 35" mudd tire. A stock 8.25 rear in an XJ wont have near the rotating mass for say a D60 or a 14bolt so you could see a big difference there. You can see power increases from removing accessory drive belts etc. Theres lots of tricks to a CHASSIS dyno. An engine dyno number is straight up what the motor makes. The engine combo I'm working with commonly makes 400-430rwhp naturally asprirated with a 4l60e trans 12bolt or 9" and 28" drag radials @ a 22-24% drivertrain loss I figure with a Dana60,35s and a 4l80e I'll probably see losses closer to 30-32% from the true flywheel horsepower.
CF Veteran
Joined: Nov 2011
Posts: 7,387
Likes: 10
From: City of Trees, CA
Year: 93 2 door
Model: Cherokee
Engine: 4.0
You're definitely gonna make less power. Drivetrain rob is huge. A 5" difference in tire could equal 200hp in power to the wheels. I know this because jimmy jacks 4500 car puts 350hp to the wheels with 35" tires with a 450hp motor where my buddies 650hp motor with 40" treps will only put the same 350 to the ground. I watched the dyno tests. A larger trans, tcase, and tires/axles woo make a huge difference in what shows up on the dyno (a number that doesn't really matter)
Thread Starter
Junior Member
Joined: Jul 2016
Posts: 35
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From: Magee MS
Model: Cherokee
Yeah there's a lot of variables in that go into rear wheel horsepower.
it wouldn't surprise me to only see 350rwhp on motor alone on a 28" drag radial thru a 14bolt.
Just bc the motor makes the power doesn't mean it's getting to the ground.
it wouldn't surprise me to only see 350rwhp on motor alone on a 28" drag radial thru a 14bolt.
Just bc the motor makes the power doesn't mean it's getting to the ground.
CF Veteran
Joined: Jun 2011
Posts: 8,014
Likes: 17
From: Louisville,KY
Model: Cherokee
Most off roading you care more about torque and what rpm you hit peak.Only time i can think of off road where horse power would matter is desert racing.Drivetrain loss on a rwd is 15% to 20%So a 4x4 its gonna be a lot higher depending how its set up.
CF Veteran
Joined: Nov 2011
Posts: 7,387
Likes: 10
From: City of Trees, CA
Year: 93 2 door
Model: Cherokee
Engine: 4.0
Thread Starter
Junior Member
Joined: Jul 2016
Posts: 35
Likes: 0
From: Magee MS
Model: Cherokee
Atoms. Yeahp I could see that much on a 40" tire.