CentralCoaster

I did some research and came up with these as potentially interchangeable with the stock bearings. (the 513XXX p/n's are Timken/BCA)

84-85 Corvette Front: 513019 or 513009 or 513090 or 513085
86-90 Corvette Front: 513019
91-96 Corvette Front: 513085 or 513090
(513090 bearings will require drilling out the threaded holes in the flange, or installing new, smaller bolts from the backside.)

84-96 Corvette Rear: 513020 or 513013


Do not, under any circumstances, buy cheap no-name bearings. They are all made in China and look pretty, but are garbage. I've used up Chinese bearings in less than 5 minutes of hard driving.

There's also USA made brands called "Green USA" and "Bearing Technologies, Ltd". I have heard no reports on the quality of these units.

ACDelco/NDH, SKF/Chicago Rawhide, BCA/National, Timken, WBI, are all proven brands.



Read further for applications, alternate p/n's, and prices.

"AZ" means Autozone
"P/A" means Parts America, Kragen, Checker, Schucks. Prices for these vary by region.

-----------FRONT BEARINGS------------

513019 84-90 Corvette front PICTURE (BCA) (AC-Delco)
5x4.75 FlangeDia=5.78 WheelPilotDia=2.76 BrakePilotDia=2.78 FlangeOffset=2.72 HubPilotDia=2.83 Flange=Rectangular (Front wheel has ABS with tone ring sensor)
ACDelco #FW115 . Rockauto.com=$280, OEHQ.com=$192
Timken/BCA #513019 . Rockauto.com=$165, AZ $175+1yr, P/A=$179-$240+1yr
SKF/CR #BR9300023 . P/A=$240+1yr
GM #12413041 . gmpartsdirect=$314

513009 82-84 rear Buick Riviera/Caddy/Olds w/disc brks PICTURE (BCA) (NAPA)
5x4.75 FlangeDia=5.78 WheelPilotDia=2.76 BrakePilotDia=2.78 FlangeOffset=2.72 HubPilotDia=2.83 Flange=Rectangular
AC Delco #20-2 . Rockauto.com=$231, OEHQ.com=$195
Timken/BCA #513009 . Rockauto.com=$137, AZ=$88+1yr, P/A=$198+1yr
SKF/CR #BR930088 . Napa=$179, P/A=$194+1yr
GM #7470539 . gmpartsdirect=$243

513085 91-96 Corvette front PICTURE (BCA) (AC-Delco)
5x4.75 FlangeDia=5.79 WheelPilotDia=2.76 BrakePilotDia=2.78 FlangeOffset=2.72 HubPilotDia=2.83 Flange=Rectangular (Front wheel has ABS with Integral Sensor)
AC Delco #FW109 . Rockauto.com=$351, OEHQ.com=$308
Timken/BCA/FedMog #513085 . Rockauto.com=$300, AZ=$185+1yr, P/A=$269-$456+1yr
SKF/CR #BR930065 . P/A=$424+1yr
GM #12413001 . gmpartsdirect=$369
Green #RW465
BTL #GU118

513090 93-02 F-bodies, 97-00 S10 PICTURE (BCA) (NAPA)
5x4.75 FlangeDia=5.79 WheelPilotDia=2.76 BrakePilotDia=2.78 FlangeOffset=2.72 HubPilotDia=2.79 Flange=Rectangular (Front wheel has ABS with Integral Sensor)
AC Delco #20-86 . Rockauto.com=$214, OEHQ.com=$155
Timken/BCA/FedMog #513090 . Rockauto.com=$165, AZ=$112+1yr, P/A=$115-$260+1yr
SKF/CR #BR930186 . Napa=$181, P/A=$136+2yr
GM #7470587 . gmpartsdirect=$230
Dynapak #513090 . P/A=$105+1yr
Green #RW468
BTL #GU119


----REAR BEARINGS----------

513020 84-96 Corvette rear PICTURE (BCA) (NAPA)
5x4.75 FlangeDia=5.689 WheelPilotDia=2.761 BrakePilotDia=2.781 FlangeOffset=1.861 HubPilotDia=3.209 Splines=27 Flange=ModifiedTriangle
AC Delco #20-45 . Rockauto.com=$260, OEHQ.com=$227
Timken/BCA/FedMog #513020 . Rockauto.com=$152, AZ=$155+2yr, P/A=$179-$240+1yr
SKF/CR #BR930024 . Napa=$208, P/A=$160+2yr
GM #7470501 . gmpartsdirect=$293
wheelbearingsinc.com = $65, Summit=$160
Green #RW407
BTL #GU120

513013 83-93 S10/Blazer 82-85 front Buick Riviera/Caddy/Olds PICTURE (BCA) (AC-Delco) (NAPA)
5x4.75 FlangeDia=5.69 WheelPilotDia=2.76 BrakePilotDia=2.78 FlangeOffset=1.86 HubPilotDia=3.21 Splines=27 Flange=ModifiedTriangle
AC Delco #20-52K . Rockauto.com=$253, OEHQ.com=$228
Timken/BCA/FedMog #513013 . Rockauto.com=$144, AZ=$143+1yr, P/A=$135-$227+1yr
SKF/CR #BR930052K . Napa=$87/$208, P/A=$123+1yr
GM #7470005 . gmpartsdirect=$301
Dynapak #513013 . AZ=$75+1yr
wheelbearingsinc.com = $61, Summit =$120
Green #RW407
BTL #GU124

There's also a handful of bearings that will fit but change your rotor and wheel offsets a bit.

Green: Green USA
BTL: Bearing Technologies, Ltd.
SKF/CR: SKF-Chicago Rawhide
BCA: BCA-National

Z~max

Good info!! Thanks!!

Tom Piper

Excellent data, makes comparing a breeze -- well done.

Is the stock rear bearing on a C4 a ball bearing?
Does someone have an old/defective rear bearing they could knock apart to see if it is a ball or roller bearing?

Can it be replaced by one that is a roller bearing?


Tom Piper

Tom Piper

Keep in mind, the front beariing assemblies on later C4 Corvettes have the ABS reluctor ring on them, and the number of teeth would have to be the same for the ABS to function properly.

Tom Piper

CentralCoaster

That 82-84 Caddy bearing looks exactly like my non-ABS 85's front bearing. I suspect that GM incorrectly or out of laziness specified the ABS bearing for 85. Obviously that bearind didn't exist in 85 for replacement.

c4cruiser

Isn't the F-body front bearing the one where you only need to drill out the threads in the mounting holes to get it to fit the 91-96 C4? I think there is a Tech Tip on using this bearing.

CentralCoaster

Yes, but you'll lose your ABS function. And the bolts can simply be put in backwards, no need to drill anything. But the Caddy bearings are cheaper anyways, hopefully they fit, I'll check em out some time this week.


So it appears we have a cheap brick & mortar source for rear bearings on all C4s,
and now we have a cheap brick & mortar source for fronts on all non-ABS C4s, or anyone willing to give up their ABS to save a buck.

96GS#007

I have the 1994 Firebird front bearings on mine and the ABS works as designed.

If you want to put the bolts in backwards, you'll need new bolts....on later C4s the bolts are larger than the holes in the F-Body bearings.

parafrog

my hero.

let us know if that front caddy fits, please.

CentralCoaster

The firebird bearings have an electrical connector on the back of them, at least the one I pulled out of the box did, and it matched the photo in the link above exactly. It did not have a reluctor ring. Is there a hole in your knuckle and your ABS connector hooks up directly to the plug on the bearing? You're saying your ABS works without the Corvette reluctor ring on there?

zoro

I used a 513009 on my '85 (no reluctor) and all the dimensions were identical to the one I removed.

parafrog

how long you been having them on?

zoro

haven't got many miles on that - changed the bearing in October and put it in storage until last month but it is a perfect fit

96GS#007

One pic shows the stock knuckle and the other shows the stock bearings vs the Firebird bearing. Red circles show the holes in the bearing that were enlarged in order to use the Corvette bolts.

Bolts up fine, works fine (over 300 road course miles on them with Hoosier R compound tires), ABS works perfectly.

CentralCoaster

Ah, ok. So here's my new parts list:



84-85 Vette Front = 513009 or 513019 or 513085 or 513090

86-90 Vette ABS Front = 513019

91-96 Vette ABS Front = 513085 or 513090



84-96 Vette Rear = 513020 (or maybe 513013)

larryfs

You heard my story about Timken. less than 100 track miles = garbage.
I do have to pull it off, and take it back to autozone...
And Watkins Glen isn't neccessarly hard on parts. It's a big open road course.

Tom Piper

I've heard too many stories of how the C4 rear bearings don't hold up.
I'm thinking that the stock rear bearings on a C4 are "ball bearing" type -- they won't handle lateral loading like a "tapered roller bearing."
It would be nice to know if they are ball bearing and if a roller bearing (or possibly a heavier duty roller bearing) was available as a simple bolt on.
I think the front bearings on a C4 are roller bearings.

Notice the reference to thrust loads:
http://www.timken.com/products/beari...s/overview.asp
Although this is somewhat extreme, this gives you an idea of how lateral loads are handled, click on the "Thrust Bearing" link and notice the angle of the cup.



Tom Piper

DanZ51

This is some really good info. I've always been curious as to what changes were incoorperated in corvette bearing designs.

What caught my eye was CC's reference (in another thread) to a bearing that might be able to alter the wheel offset to use.

Tom Piper

It's also going to alter the brake rotor offset, meaning the caliper mounting would probably have to change.

Tom Piper

rocco16

What I want to know, Kevin, is who let you pick through all those parts and take pictures???
Tell me the name of that store!

Larry
code5coupe