if your really into upgrading, lots of rear D60s (like mine, lol) came with disk brakes, im not 100% on the mods required to make them work on a drum setup, ie. proportioning valve, metering valve, ABS, etc, but it may be worth it to do some research.

 

well my truck is only 2wd so i dont have a front diff to replace. i am just trying to get more power with my bigger tires. i am thinking 4.10 to go with 33's. i just really need help deciding between an axle swap or regearing. disc brakes would be a major plus if possible in a swap. will an axle off a 2500 not fit my 1500? what is the difference between a dana 60 or 70 and 9.25?

 

The difference is, well, everything. Like I said above, a Dana 60 or 70 will be an 8 lug unit which wont match the front bolt pattern, the leaf spring pads will most likely be 3" wide instead of 2.5" like the half tons (not too big of a deal), and the drive shaft will not bolt up.

Disc brakes would be possible, but a lot more work involved than just swapping it in. And you would have to find a rear axle from an 02 or newer (maybe 01), as that is when they went with rear disc's.

I think re-gearing your current axle will be much cheaper than swapping a different rear axle in (especially if you go to a 60 or 70).

 

Pretty much, except the drive shaft will have to be modified.

 

lol, whoops, i guess i should learn to read the signatures.

 

ok so it looks like a re gear is a simpler task than swapping the axle for the upgrade. now, here is another question. my truck is not supercharged at the moment because i was advised to take the sc off until i got the rest off the parts to really make it go. i will be putting the sc back on probably around the same time i swap gears and it will be complete with all the bells and whistles. this is what i will be running at the time of the swap: exhaust from the headers back, supercharger w/ 9 lbs boost., sct tuned, larger throttle body, aluminum intake manifold, 1.7.1 roller rockers, and a new shift kit. will the 4.10 in my 9.25 be able to handle this fine or should i go for the extra hassle and do a dana 60 or 70? are there any power differences or drawbacks to either one and which one would hold up better?

oh and some time in the future i may be swapping the engine with a 360 with the same parts listed above.

 

and if i did swap just the gears, who makes the best for the money. i see a bunch from $199 to $699. i found accugear for $199, motive for $217, precision for $250, yukon for $330, richmond for $340, and the oem ones for around $600 to $700. i don't mind a little noise because my truck is already quite loud but i don't really want to be able to hear the gears over my exhaust, engine, and music if you catch my drift. they are all pretty reasonable except for the oem ones, but i dont mind saving 100 bucks if the gears are good quality. what do you guys recommend?

 

this really depends on the traction. will you be going to the track making hard launches on slicks or drag radials? if not, I think youll be fine. with 9psi you will probobly be in the low to mid 400hp territory, not enough to destroy a 9.25... on the street. if your worried, pick up a set of Moser or Currie axles, they are usually around $225 for a pair.
a Dana 70 is by no means a drag racing rearend, way too much power loss and weight. some really high end racers use Dana 60's but even they are pretty overkill, and they weigh a ton. All Hemi automatic cars came with an 8.75" rear, the stick cars came with a D60, and sticks are waaayyyy harder on these than autos.

 

the gears shouldnt make any noise if they are setup properly. the differance in cheap gears and quality gears is the manufacturing tolerances. a cheap gear may have a .002"-.009" differance in runout where a quality gear will be closer to 0, these figures are examples of course, the numbers will vary.

 

i am not going to be running slicks but i will be taking it to tracks and experiencing some hard launches. not to mention on the street when possible. hehe. do you have experience with any of these gear brands?