5x5 to 5x4.75 bolt pattern?

[el curioso]

has any one ever done this aside from having to re drill the front rotors like adding ones from cars or some thing like that. The reason is that the wheels that i bought for my truck happen to be that bolt pattern. I know stupid buy some that fit , but they dont make them.

Any help greatly appreciated.

Thank you in advance.

[PBFAB.COM]

Originally Posted by el curioso

has any one ever done this aside from having to re drill the front rotors like adding ones from cars or some thing like that. The reason is that the wheels that i bought for my truck happen to be that bolt pattern. I know stupid buy some that fit , but they dont make them.

Any help greatly appreciated.

Thank you in advance.

You will need to have your rotors re-drilled to 4.75", machine the nose cone down to 2.750 and then mill off the cast ribs on the back so the studs will fit... I've done it a few times! It's the only option... unless you buy a wheel adapter, which will add a couple inches on each side to the track width.

[ed455]

I've always wondered if anyone has ever tried to fit GM A-body rotors on truck spindles or A-body spindle AND rotors on our trucks. The rotors on A-bodies up to the late 70's are the same outer diameter and GM used common parts on a LOT of vehicles.

4.75" bolt pattern opens up to MANY more wheel choices. Weld rodlites (a beautiful wheel IMO) for instance are not available in 5x5 pattern.

It seems like I remember some of the early disk brake conversion kits used car rotors and spindles.

[SCOTI]

My 74 has re-drilled front rotors just like Porterbuilt described.

For the rears, I had the rear axles & drums re-drilled & for the 74 I used billet adapters because it was easier & put the wheels exactly where I wanted.

[qksilver]

My memory isn't the best but for some reason something about a camaro 1le brake option comes to mind. Don't know what year but it is a 12 rotor with the smaller bolt pattern. it was an option on third gen camaro's for showroom stock racing(road racing). Definity can't remember which wheel bearings are needed.
The guys on third gen should know
disclaimer.............it's late, I am tired and medicated!

[SCOTI]

You could prob cross reference a Hollanders manual to see if the inner/outer bearings for each are the same. If so, they would swap & be the correct pattern.

Of course, you would still have to redrill the rears though.....

[abadsvt]

Anyone have an idea on what it might cost to have the rotors redrilled? I just ordered a set of wheels in the 4.75 bolt pattern and am in need of some redrillin.

[SCOTI]

Check Mosers website. Seems I remember it being about $80 ~ $100 for a pair of rotors.

[Col Clank]

Moser website says $60 for a pair of front rotors. Really not a bad price, may have to look into this when I start looking for new wheels...

[abadsvt]

What is there website url? I would like to check them out. I am in need asap. Thanks Josh

[SCOTI]

Originally Posted by Col Clank

Moser website says $60 for a pair of front rotors. Really not a bad price, may have to look into this when I start looking for new wheels...

Don't forget shipping both ways . . ......

[abadsvt]

I found the url. Here it is if anyone else needs it. http://www.moserengineering.com/Page...pservices.html

[el curioso]

I was down at the machine shop and The machinist brought up an idea :
That why not plug the 5x5 holes and redrill 5x4.75 holes in the same area rather than milling the rear fins off. I dont mind having to mill the rear fins its just that the less work the less $$ involved. Another question the rear axle shafts when getting milled what do i need to mill the center of the axle to?

[SCOTI]

Originally Posted by el curioso

.... Another question the rear axle shafts when getting milled what do i need to mill the center of the axle to?

Take your new wheels to the machinist & have him measure the hub. The difference is how much you'll need to machine off the axle hubs.

[uncle]

On the rotors, you might try an early chevy or gmc 1/2 ton van Some of them had a 4 3/4 bolt pattern. It's the bearings and bearing depth you'll have to check.

[PBFAB.COM]

Originally Posted by el curioso

I was down at the machine shop and The machinist brought up an idea :
That why not plug the 5x5 holes and redrill 5x4.75 holes in the same area rather than milling the rear fins off. I dont mind having to mill the rear fins its just that the less work the less $$ involved. Another question the rear axle shafts when getting milled what do i need to mill the center of the axle to?

Sounds like more work to me... welding up the holes and then re-driling them. Maybe it would be the same amount???? But I would rather mill off the fins.

2.750" should work just fine for a spec!

[424shee]

I bought a running gear recently,switched everything over to my truck about two months ago and am getting ready to get wheels when I read this thread it got me curious about my bolt pattern,so I went out this morning and measured my bolt pattern,from center bolt to center bolt is 4 and 3/4.I have a 69 camaro and I have tried to bolt those wheels up but I could'nt get them to fit.am I measuring eveything right?

[PBFAB.COM]

The bolt pattern is measured as the diameter of a circle that would pass through the center of all the studs. If you measured from one stud diagonal to the one across, on a five lug, it would not be the actual measurement of the diameter... but smaller. If you have a five lug and it measures 4.75" from stud center to stud center on the diagonal, it would take a 5" diameter circle to touch the center of all 5 studs... your bolt pattern is 5 on 5".

[Frizzle Fry]

There is another option. I'm running 4.75" wheels on my 5x5 gear. The pic says it all... But I did pay $180 for 4 adapters. Why? because the wheels were basically free...

[raggedjim]

Uncle is right the mid 70's G10 van has some parts than will bolt in (on the front, not sure of the rear) Someone on here had done this but the post was a LONG time ago. I'll see if I can find it.

Rg

[Dick Dale]

Frizzle, where did you get those? How much space do they take up? Details details my friend.

[trkklr77]

yeah, ive got a smoken deal on some car 4.75" slot mags that i would love to run if i had 4.75" pattern

[stepn67]

A buddy installed front disks from an S10 Blazer on his 66 1/2 ton which gave him the 4.75 pattern. Can't remeber if it was just the rotors or the entire spindle/rotor combo. I'll see if I can get call him this weekend.

[raggedjim]

I hope it was just the rotors, the ball joints on an S10 blazer suck...

Rg

[stepn67]

Yeah your right, the S10 ball joints probably would'nt hold up.
I just called a local parts house and the front wheel bearings for an 85 C10 are the same as the bearings on an 86 S10. So i guess the rotors are what my buddy used on his 66.