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Old 09-06-2010, 08:19 PM
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Please HELP-disc brake set up for my 72 NOVA

ok, so i know you guys will be able to help, im building a 72 nova and want to put front disc brakes on. what other car swaps with my nova. ive heard so many different ones. Prior to changing anything else i need to do. what is your input on just going up to my local autozone or orileys and geting all the rotors and calipers need and buying the spindels some where else. the car is just a street car.... thanks again.....

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Old 09-06-2010, 08:39 PM
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1964-1966 gm A bodies did not have disc brakes but 67-72 A body did.
they will fit the 64-67. (in case someone is selling a take off system for an upgrade)
A body = lemans gto skylark cutlass chevelle,tempest
They are interchangeable.
67-69 F body will fit your car (camaro)
68-74 X body will fit your car (camaro,firebird,trans am, nova,ventura,apollo and omega.)
Some of the 67-68 used dual piston calipers.OEM
Stuff like this is gettin rare in the salvage yards there are places that sell complete conversions. I like OEM stuff for this.
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Old 09-06-2010, 09:16 PM
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68-74 Nova, Omega, Ventura, Apollo is a direct swap, as are 67-69 Camaro/Firebird. '68-72 Chevelle, Cutlass, Tempest, Skylark (A-body's)will also bolt-on, but you will need to swap your current steering arms from your spindle to the A-body spindles.
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Old 09-07-2010, 06:28 AM
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You will also need to match the master cylinder to the brakes, including the possibility of needing an adjustable proportioning valve.

BTW- The '67-'68 Camaro front calipers were available as 4-piston. These are not particularly good calipers and would cost a fortune unless someone didn't know what they have. But if you see them cheap- grab them!
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Old 09-07-2010, 06:51 AM
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The 78 and up Malibu,Monte Carlo or 82 to 92 S10 stuff is metric but will bolt up when and if you use their upper ball joint,lower ball joint,outer tie rod and adjuster sleeve.I have the Moog catalog for the part #s if you need them.I looked this stuff up for some of the guys in my car club.The parts are all over the place at the salvage yards.I have a 70 Nova to by the way.
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Old 09-07-2010, 09:53 AM
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Quote:
Originally Posted by TroyBoy
The 78 and up Malibu,Monte Carlo or 82 to 92 S10 stuff is metric but will bolt up
How?

The 68-74 Novas are rear steer and the G-body and S-10 spindles are front steer. The later spindles have the steering arm as an integral part of the forging, so you can't swap the arms and you can't swap the spindles side-for-side either. This might work on a A-body with the correct ball joints, but it certainly doesn't work on an X-body or first gen F-body.
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Old 09-07-2010, 10:51 AM
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You put the drivers side on the pass side and vice versa.Your caliper is now on the front of the rotor but who cares.
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Old 09-07-2010, 11:47 AM
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I think I read some where you can actually use your drum brake spindles if you get one of the bracket mounting boss machined down a bit to accept the calipar bracket. Then you would have to get all the parts to convert.
You can use the A-body disc brakes. Just use your steering arms.
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Old 09-07-2010, 12:10 PM
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Quote:
Originally Posted by TroyBoy
You put the drivers side on the pass side and vice versa.Your caliper is now on the front of the rotor but who cares.
WOW

Can you say "bump steer". This is a REALLY bad idea from a handling perspective. Steering geometry is completely wrong.

As for the stock spindles, it's a very simple machining job. More info is here (first gen Camaro spindles are the same as Nova):

http://www.pozziracing.com/brakes.ht...Drums_to_Discs

It's about 0.610" that needs to be cut off to mount the caliper bracket. The brackets are now available repro for under $50/pr. and everything else is available at any parts store.
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Old 09-07-2010, 12:38 PM
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WOW? Anyway,I own a 79 Malibu so I measured the centerline of the spindle to the hole in the steering arm you bolt the outer tie rod in= 6". I also own a 70 Nova so I measured in the same way also=6 1/4".Is this going to cause bumpsteer problems Has anyone on here tried this?I will be the 1st to say I have not.A friend ask me about using S10 parts which are the same as G-body that he read about on another forum.I have no idea what forum that is. The parts WILL interchange but I don't know about bumpsteer. I would like this proved one way or another please.
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Old 09-07-2010, 01:28 PM
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Quote:
Originally Posted by TroyBoy
WOW? Anyway,I own a 79 Malibu so I measured the centerline of the spindle to the hole in the steering arm you bolt the outer tie rod in= 6". I also own a 70 Nova so I measured in the same way also=6 1/4".Is this going to cause bumpsteer problems Has anyone on here tried this?I will be the 1st to say I have not.A friend ask me about using S10 parts which are the same as G-body that he read about on another forum.I have no idea what forum that is. The parts WILL interchange but I don't know about bumpsteer. I would like this proved one way or another please.
The length of the steering arm isn't the only factor - it isn't even the most important factor. The vertical location of the outer tie rod end relative to the wheel centerline, the lateral offset relative to the plane of the wheel, and the kingpin angle relative to the steering arm are all very important elements of how the car handles and steers. Swapping the spindles side for side is a really bad idea when the steering arms are an integral part of the spindle.
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Old 09-07-2010, 06:03 PM
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Would anyone else with experience in this field care to chime in
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Old 09-07-2010, 06:39 PM
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Joe is right, steering arm length only affects turning raduis and steering quickness. The major problem is the difference in vertical height from the spindle centerline down to the tie rod connecting point on the steering arm. Bumpsteer is going to be terrible. This swap(78-up metric spindle to rear steer X and F-body) cannot be done, even though you think it looks good on paper.
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Old 09-11-2010, 08:59 AM
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You haven't convinced me but I passed your concerns along to the interested parties.
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Old 09-22-2010, 11:56 PM
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A-body up to '72 spindles will work, but do NOT use A-body steering arms, even though they will bolt up. The aforementioned bump-steer is why. Your drum-brake steering arms will work fine on the disc spindle.
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