Stock fj40 rear semi-float axles vs. PP rear semi's

['74 UA FJ]

Which is stronger? How many folks have broken stock semi floaters, and with what size tires? I know sputnik has talked about bending/breaking a couple sets of poly performance shafts.

I've got 38.5 sx swampers on order and am debating whether or not to switch to PP rears when I get around to dropping 4.88s in.

 

[mookie]

i'd run stockers till you start breaking them.....i've been running stock rears for 4 years with 38" sx's and 39.5 iroks and only broken one short side and twisted the splines on the long side at the same time

 

['74 UA FJ]

i'd run stockers till you start breaking them.....i've been running stock rears for 4 years with 38" sx's and 39.5 iroks and only broken one short side and twisted the splines on the long side at the same time

How much and how hard do you wheel?

 

[mookie]

i probably avg. 6 rides a year.....i try to wheel as hard as i can

 

[leftarmtan]

I have broken one stock rear,snapped just outside the carrier.I would say break at least one or two before going aftermarket.I run a mini truck rear now (for the centered diff) with stock shafts on 37's no problems.

 

[TURNMEOVER]

Which is stronger? How many folks have broken stock semi floaters, and with what size tires? I know sputnik has talked about bending/breaking a couple sets of poly performance shafts.

I've got 38.5 sx swampers on order and am debating whether or not to switch to PP rears when I get around to dropping 4.88s in.

sputnik40 is a odd case. TBI 2F/sm420/orion2100hd/red lables and you need a 14 bolt.

I ran stockers on a SBC rig w/ 33's for years went to 36 irok's/sm465/ toy box and i put in the polys.

 

[megolfer]

Broke a lond side with a sbc 350, sm465, toybox with no skinny pedal. I was running 37 mtrs.Now I went to a dana 70 rear

 

[mookie]

sputnik40 is a odd case. TBI 2F/sm420/orion2100hd/red lables and you need a 14 bolt.

those red labels are hell on axles....my friend keeps blowing rear D60 r&p's with a 4 banger

 

['74 UA FJ]

sputnik40 is a odd case. TBI 2F/sm420/orion2100hd/red lables and you need a 14 bolt.

I ran stockers on a SBC rig w/ 33's for years went to 36 irok's/sm465/ toy box and i put in the polys.

33s? I wouldn't even be talking about axles with 33s. So you didn't even give the stockers a chance with 36's?

 

[TURNMEOVER]

33s? I wouldn't even be talking about axles with 33s. So you didn't even give the stockers a chance with 36's?

nope I am crazy hard on my rig. 2 pinions. countless birfs. and 1 tcase.

 

[bustanutley]

run stock shafts till you run out of spares.

 

['74 UA FJ]

The splines on my rears are pretty worn, so I'm thinking it might not be long before I destroy one.

 

[Tapage]

after my second stock one .. I jump over PP rears and still holding ( knock wood )