i JUST GOT MY 3RD MEMBER OF GRAIGSLIST,MY QUESTION IS MY BUILT 460,WILL 28 SPLINE AXLES HOLD UP TO THE HP,IT HAS 4:11 GEARS I'M WORRIED I'M GOING TO SNAP AXLES,WOULD STRANGE OR CURRY AXLES BE THE WAY TO GO,ANY FEEDBACK IS ALWAYS APPRICIATED,BY THE WAY I'M GOING TO BE RUNNING A C6 WITH A 2800 STALL THANKS

 

Strange or currie or moser may not make you custom axles in 28 spline. Due to potential breakage.
Thats WHY you need to plan out the purchase before hand. If you are not narrowing the rear keep a set of stock axles on hand for breakage.
A 28 spline behing a big block may hold up in normal use? under abuse you are just asking for a triple A tow...

Garbz

 

I came across a 9" lincoln rear end with disc brakes but the guy doesnt know if it has 28 or 31 spline axles?

 

Lincoln rear is an 8.8 rear. Avoid the versailes rear. hard to get parts for. in the brake retainers and pins. it will be a 31 spline but noting interchanges with a 9"


Garbz

 

Thats what I run,haven't broken mine.... yet

 

Did not say it would break.....Its just hard to find parts for.

 

Big66, what kind of work do you intend to use your truck for? If racing or gutsy work, then yes, 28 spines will do you short service.
I am using 28 splines behind my 460/C6, but I won't race or bark tires, and the most I'll do is pull heavy loads.

You may also find the 4:11 ratio a bit short - especially with a 460! If you have put in a straight up timing gear set, have a good cam, and the motor is in decent condition, you can use taller gears to get better highway mileage, and still have good power.

Just my opinion, and a lot of the best choice for you depends on what you want to do with it.

 

28 splines is normaly plenty strong for a truck under normal use. the problem you may run into is trying to use them with 4.11 gears And a mini spool. lower gears multiply torque applied to the axles by the same ratio as the gears. 3.00 gears multiply the driveshaft torque by 3, 4.11 gears multiply the driveshaft torque by 4.11. so you end up with upto 25% more presure twisting on the axle shaft. That may not be a problem. But a normal open diff lets each axle take no more than 50% of that torque load. a spool means either shaft has a chance of getting 100% of that torque load. That can snap a 28 spline shaft.

As for the 8.8, they're great axles, but the car versions are supose to all be 28 spline. the ones used on post 98 explorers are 31 spline and positraction. I don't know about part avilibility, but they aren't 5 on 5.5 bolt patterns, so they won't match your wheels.

 

My 66 F-1 is going to be equiped with a 500+ horse 460 and a C6 with a stage to kit,Its not a daily driver I want to use it to take to the strip so I guess I can buy stock in 28 spline axles or upgrade to 31's what do you think cause I know on a hard launch I can already hear axles snapping,ouch

 

Yep, sounds like 31s are in order alright.

Consider this:
Get a 1973 - 1979 rear axle. You can easily find 31 spine axles and rear punkins for this setup.

You will need to relocate the spring perches and the shock mounts about 2" inward to the center, and you may need wheels with more offset if you use large tires.
However, I am guessing the overall cost will be much less, and you still have stock parts to work with.

It is said to be not possible to use stock 31 spline axles in the 1972 and earlier axles, because the later axle shaft bearings will not fit the earlier axle housings, but I do not know this of my own knowledge.
Just my thoughts, but I would look seriously at doing it this way. There are a bunch of guys who can give you the precise measurements on this swap!

 

I'll be running 35 spline in my nodular Strange pumpkin, 3.50 gears behind a 521" 385 series.

 

Sorry garbz2
Wasn't talking about an 8.8. I run a 9" -w- 28 splines. The guy I buy parts from said it'll last.... for a while.

 

i have seen guys run 500+ on 28 spline mustang axles in ther cars and not had any problems. i am running a 500+ hp 418Fe and paln on running my 28 sline axles in my 1966 F100. not real worried but we will see!!!

 

NO prob... The issue is when throwing spline counts out there. Typically in a F100 slick there will be either a 9" rear or a dana in open or LS configuration.

9" rears use 28 and 31 spline axles in a stock configuration. The axle is retained by the housing end.

Danas are not worth worring about with spline counts as nothing interchanges and not much is avalible carrier wise to upgrade.

8.8 rears use typically 31 spline axles in a stock configuration. The axle is retained by C clips internaly at the gear set.

The AXLES do not interchange between 8.8 and 9"

The bearing ends on a 9" housing for a truck application has the same outer race dimension. Smaller bearing outer diameter comes in to play on some mustang, fairlane and torino 9" rears. When asked for early or late be=ig bearing it relates to the bolt pattern of the housing end.

Bearing inner races change over the years in diameter therefore requireing custom bearing that Moser or Strange can supply.

Now lets not even mention the nine inchers little cousin the 8" rear...

I would be leery of 500+ horses on a 28 spline axle. Upgrading to 35s is just a matter of a new carrier and custom axles. What you would spend on the carrier will more than offset the tow bill and other repairs due to a grenaded 28 spline unit.

Garbz
Additional debate encouraged.

 

Oh.... and keep a lookout for 9" rears out of 66 to 77 broncos. they are all ready narrowed for prostreeting....Just need to play with the offset.

Garbz