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drilling axle flange
https://slantsix.org/forum/viewtopic.php?t=57850
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Author:  Hapster [ Tue Jun 09, 2015 6:40 pm ]
Post subject:  drilling axle flange

Can I redrill a rear axle and press in lugs in a 4.5 inch pattern?

Considering upgrading to disc brakes and want my front and rears to match and need to go to a minimum of 15 inch rims.

Or are there other axles from other cars that will interchange?

Author:  Pierre [ Tue Jun 09, 2015 8:43 pm ]
Post subject: 

Which axle are you trying to do this to, and which car? There may not be room to drill a new bolt pattern with the access hole there.

Author:  Reed [ Tue Jun 09, 2015 11:43 pm ]
Post subject: 

I will go out on a limb and assume you are referring to an a body 7.25 axle.


(b) You could try and find the axles shafts out of a large bolt pattern 7.25 and swap them in, but the question becomes, why?

You cannot swap LBP 7 1/4 axle shafts into a SBP housing. The end of the housing and bearings, retainer are different.

Author:  Charrlie_S [ Wed Jun 10, 2015 3:40 am ]
Post subject: 

Quote:
I will go out on a limb and assume you are referring to an a body 7.25 axle.


(b) You could try and find the axles shafts out of a large bolt pattern 7.25 and swap them in, but the question becomes, why?
You cannot swap LBP 7 1/4 axle shafts into a SBP housing. The end of the housing and bearings, retainer are different.

Author:  Reed [ Wed Jun 10, 2015 4:12 am ]
Post subject: 

Quote:
Quote:
I will go out on a limb and assume you are referring to an a body 7.25 axle.


(b) You could try and find the axles shafts out of a large bolt pattern 7.25 and swap them in, but the question becomes, why?
You cannot swap LBP 7 1/4 axle shafts into a SBP housing. The end of the housing and bearings, retainer are different.
Ah! Something was bothering me about that, and you correctly pointed it out.

Author:  Old6rodder [ Wed Jun 10, 2015 11:02 am ]
Post subject: 

I've done this re-drill, and as mentioned, you should clock the new holes so as to avoid the access hole, not just half way between the old ones. I clocked mine so as to retain equal amounts of "meat" on both sides of the new hole in question.

Also, the register lip I.D. on the 4.5" pattern rims that I could find was larger than the 4"ers. This left the only register as the lugs & nuts, requiring ACCURATE location of the new holes.

Author:  Hapster [ Wed Jun 10, 2015 11:52 am ]
Post subject:  car involved

sorry I didn't specify car.
1962 Valiant with 5x4 lug pattern

Old6rodder, thanks for the info on your process of drilling

Author:  Hapster [ Thu Jun 11, 2015 9:21 am ]
Post subject:  conversion kits

The people at Right Stuff Detailing tell me their kit for 60 on disc brake conversion kits have the right drilling for the Valiant wheel pattern. Not that I am replacing them any time soon but it would save having to change patterns.
Also summit has a raft (ok 3 or 4 manufacturers)of 5x4 15 inch wheels including US, American racing, Crager ss and morpar ralleys.

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