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Brake Conversions Tech info on converting from drum to disc

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  #1  
Old Sep 5th, 99, 9:01 AM
DG DG is offline
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I have a 70 Chevelle Malibu. The previous owner changed the front drum brakes to disc. I think he mentioned a 74 Monte Carlo as the donor.

I was thinking of keeping these discs instead of trying to locate a decent set from a 70-72 GM A body (see post http://www.chevelles.com/forum/Forum7/HTML/000707.html ) and swapping them out.

One thing I noticed is that the lower ball joint does not stick thru the spindle's lower mount enuff to use a cotter pin to secure the castle nut. This I am told is also an indicator of a 73 and up Monte Carlo swap.

I wanted to see if there is a ball joint availible that would fit on my stock control arm that would fit properly to this spindle?

Is it possible to clearly identify the spindle I have?
Thanks



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DG
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70 Chevelle Malibu

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  #2  
Old Sep 5th, 99, 9:14 AM
Scooter Scooter is offline
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It sounds like the original 70 lower ball joint was used. The 70 has a different taper to it and the stud is shorter than the 74 ball joint. The 70 ball joint is also smaller in diameter where it goes into the lower control arm, which means a 74 ball joint will be too big. There is a ball joint made with the correct diameter to fit your lower control arm, and with the correct stud to fit the 74 spindle, but I don't know the part # of it. Maybe someone else can help with that one.

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  #3  
Old Sep 5th, 99, 10:19 AM
Brob Brob is offline
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It sound like the previous owner did'nt change the lower ball joint for the later year Monte Carlo. You might check the upper ball joint the same rational applies as far as years go.

Lower Ball Joint
64 to 72 Use the same ball joint K5103
Moog #
73 to 88 Use a different ball joint K6145
Moog #

Upper Ball Joint#
64-72 K5108
73-88 K5208


Source is from an 1997 Mooge Catalog
Sorry I don't know the taper

These ball joints fit all Monte Carlo, El Camino, Chevelle & Malibu

Befor edit I had transposed part numbers sorry

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[This message has been edited by Brob (edited 09-06-99).]
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  #4  
Old Sep 5th, 99, 10:45 AM
Wes V Wes V is offline
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This is going to sound REAL painful, but I'd recommend that you locate the local distributor of suspension parts to the repair shops and bring in one of the spindles! That way, you can get the ball joint that is correct in both taper and length.

Please don't "jury rig" this, for obvious reasons!

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  #5  
Old Sep 5th, 99, 1:34 PM
DG DG is offline
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I have contacted the suspension parts houses on this. I am waiting for a reply.

Scooter, <BLOCKQUOTE>quote:</font><HR>There is a ball joint made with the correct diameter to fit your lower control arm, and with the correct stud to fit the 74 spindle, but I don't know the part # of it<HR></BLOCKQUOTE> Where have you heard this, I'm interested?

Wes V, <BLOCKQUOTE>quote:</font><HR>Please don't "jury rig" this, for obvious reasons!<HR></BLOCKQUOTE>, If I can't make this safe, I'll toss the 74 spindles and buy a kit or scrounge some more for a 70-72 OEM set. I haven't driven the car all summer since I took the fenders off for metal work.

Thanks for all the replies, but I need some part ##'s guys before I get the fenders back. Of course if some one has a bare set (I have every thing else) of 70 spindles I'd appreciate an email.




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DG
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[This message has been edited by DG (edited 09-05-99).]

[This message has been edited by DG (edited 09-08-99).]
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  #6  
Old Sep 5th, 99, 11:24 PM
Schurkey Schurkey is offline
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You need the same ball joint kit that was "invented" by H-O Racing, and I think it is still sold by Malibu Performance. Seems to me that the '74 Monte used the same spindle as the 2nd Gen Camaro, often used for tall spindle disc conversion.

There was a discussion here years ago about the lower ball joints being standard issue units for whatever the spindle came off of, ('74 Monte in your case) but with .080 machined off of the press fit diameter. I have NOT verified this, and include it only to refresh other's memories.

One problem--using the wrong taper ball joint stud may have caused wear or other problems in your present spindles. Inspect ALL THREE holes in each spindle! (Upper BJ, Lower BJ and tie rod end. Those were all part of the H-O conversion kit.)
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  #7  
Old Sep 6th, 99, 6:51 AM
Brob Brob is offline
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DG Thanks I had transposed my Moog part numbers check my edited message

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  #8  
Old Sep 6th, 99, 7:15 AM
Tino Tino is offline
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DG,
Schurkey is correct that the Monte(73+) and Camaro(70-77) used the same spindles for 73+. The p/n's are: left 329249, right 329350. As far as the ball joints, the upper is 338388( fits all(70-77) Camaro,Chevelle, NOva,Monte), the lower is Camaro(70-77) - 9756251, Chevelle/Monte(70-72) -3875067, and Nova(70-74) - 3875067. The Camaro(70-77) and Monte(73+) also share the same lower control arms p/n 6260592. Hope it helps.


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  #9  
Old Sep 6th, 99, 9:09 AM
DG DG is offline
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Schurkey,
<BLOCKQUOTE>quote:</font><HR>You need the same ball joint kit that was "invented" by H-O Racing, and I think it is still sold by Malibu Performance. <HR></BLOCKQUOTE> I knew there must have been some sort of kit for this swap. I cannot find HO or Malibu performance in the back of the HR, CC, CHP mags I have lying around. Anyone have their number?

Tino, thanks for the part #'s, I'll print this out again.

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  #10  
Old Sep 6th, 99, 9:35 AM
JeffK JeffK is offline
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Here's the phone number to Malibu Perf:

818-222-6725

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JeffK ACES #01510
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  #11  
Old Sep 7th, 99, 10:03 AM
DG DG is offline
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JeffK,
I talked to Malibu Performance this morning. No luck getting ball joints to work on my current spindles if they are from a 74 Monte.

BUT, they have a conversion kit if I find a set of 70-81 Camaro disc spindles. I would get 4 ball joints and outer tie-rod ends for $175. Might try to go that route.

I just called a few local wrecking yards and I can get a complete set of these Camaro spindles for $60. Anyone done this swap recently, using Malibu Performance ball joints? I figure I might as well do upper & lower bushings too.


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DG
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70 Chevelle Malibu

www.wright.edu/~adams.6/chevy.htm
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[This message has been edited by DG (edited 09-07-99).]

[This message has been edited by DG (edited 09-07-99).]
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  #12  
Old Sep 7th, 99, 1:35 PM
Brob Brob is offline
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DG I'm presently gathering parts to convert my 64 Chevell to disk. I'm using 78 Camaro spindles. I bought the pair of lower machined ball joint's from Mailbu Performance $92.00

Everything else I bought from Autozone who now owns Chief and appears to be about 25% less than Pep Boys.

Upper ball joints for 1970-81 Camero Moog Part number K5208 McQuay # FA 688 $11.99 ea

Tire Rod ends for 1975-81 Camero Moog Part number ES441RL. McQuay # Es441R $8.99 ea

The outside diameter of the tie rod is larger than the stock one. The tie rod sleeves is split to accomodate this difference just loosen the bolts.

Calipers # 90147 & 90148 $11.99 ea. exchange old core

Brake hose #88542 $15.99 ea.
Bearings $5.99 ea.
Seals #8871 $1.99 ea.
New attach bolts # H5002 $3.39 ea.


I purchased everything at Autozone. They carry Mcquay Norris but converted everythin over from my Moog numbers.

I also bought "off set" Upper Control Arms to get more negetive camber Moog # K5250 $96.00
Getting hard to find. Autozone could not interchange this one to McQuay Norris. Found a store that stocked Moog parts, not many stores carry Moog in my area.

I also bougt a rebuilt power booster with new master clynder for $175.00 from Holland Specialties.

e mail hollandspecialts@hotmail.com

714-539-8586



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  #13  
Old Sep 7th, 99, 5:29 PM
DG DG is offline
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Allright Brob!!!,
I was quoted about $100 for the conversion lower ball joints from Malibu Performance if I found 70-81 Camaro spindles. I can get a complete set from a yard for $60.

I do have an AutoZone local, how much are rotors going to cost?

And did you have to get the offset upper shafts?

I may score somethign usable at the Springfield swap this weekend. Other wise I'll start with the Camaro spindles. By the way what is the casting # on your spindles?
Thanks

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  #14  
Old Sep 8th, 99, 9:37 AM
Brob Brob is offline
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DG Please go back and edit the quote you entered under Brob. I've E mailed you the correction and restated in a previous post. I had reversed the part numbers for the years ie.

Lower Ball Joint Fits all Monte Carlo, El Camino Chevelle & Mailbu Source Pages out of an 1997 Moog Catalog

64-72 is a K5103 Moog
73-88 is a K6145 Moog

Upper Ball Joint

64-72 is a K5108
73-88 is a K5208


Camero
Upper Ball joint all Moog Numpers
67-69 is a K5108
70-81 is a K5208
Camero
Lower Ball Joint
67-69 is a K5103
70-81 is a K6145


1993-96
Camero & Z28
Upper is a K6462
Lower Is a K6145


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[This message has been edited by Brob (edited 09-08-99).]

[This message has been edited by Brob (edited 09-08-99).]
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  #15  
Old Sep 8th, 99, 12:08 PM
DG DG is offline
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Brob, I just deleted it from the quoted message. This is great info. I'll have to print this out again.

Does anyone have any tips ID-ing GM spindles for for the swap meet this weekend? Should I go buy a "By the numbers book"?
Thanks

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DG
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70 Chevelle Malibu

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[This message has been edited by DG (edited 09-08-99).]
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