1964-72 Chevelle, GTO, A-body tall spindle disc brake conversions for negative roll.

Using Global West tubular upper control arms and GM tall disc brake spindles have the following advantages:

The upper ball joint is moved back to allow for higher caster alignment settings. Caster improves high speed stability and road feel. Caster also improves corner entry.

By using taller spindles and shorter upper control arms, camber curves are directly affected. The tire stays flatter on the road surface. This improves handling through the corners dramatically.

Tire life is improved because the tire remains flatter on the pavement.

Front ride height will drop 1-inch because of the taller spindle and lower ball joint combination. This lowers the center of gravity and improves vehicle appearance without sacrificing suspension travel. This combination also lowers the front roll center providing a more favorable roll axis.

Global West’s tubular upper control arms offer the advantage of versatility regarding bushing selection. Stock rubber bushings, Del-a-Lum bushings (limited lifetime warranty see bushing warranty policy) or polyurethane bushings can be used

This type of disc brake conversion uses ready available replacement parts.

Stock springs can be used for maintaining ride comfort.

NO clearance problems with headers whether you have a big or small block.

Alignment settings are easily achieved .

The following donor cars provide 11-inch disc brake spindles:

Apollo 1975 GMC Sprint 1973-1977 Pontiac Full Size 1977-1981

Buick Full Size 1977-1981 Grand Prix 1973-1977 Pontiac Lemans 1973-1977

Buick Century 1973-1977 Monte Carlo 1973-1977 Riveria 1977-1978

Camaro 1970-1981 Nova 1974-1979 Seville 1976

Chevelle 1973-1977 Olds Cutlass 1973-1977 Skylark 1975-1979

Chevy Full Size 1977-1981 Omega 1975-1979 Ventura 1975-1977

Firebird 1970-1981 Phoenix 1977-1979

Most of the brake parts can be found at the wrecking yard. Be sure to check the spindles where the wheel bearings rest. Make sure there are no signs of galling or grooves. Check the ball joint holes for damage making sure the tapers are not out of round.

For 12-inch disc brake spindles use:

Buick Full Size- Le Sabre Wagon / Electra Wagon 1977-1994	Cadillac Fleetwood and Deville 1977-1984 // Brougham and Fleetwood 1985-1994	Chevy Full Size 1977-1996 Caprice, Impala, Belair, Biscayne
Olds Delta 88, Delta 88 Wagon and Olds 98 / 1977-1992	Pontiac Full Size Bonneville, Catalina, Grandville 1977-1986

Important:
We have ran into two different types of 12-inch disc brake spindles. One version uses a small outer bearing measuring .750. The second type uses a larger outer bearing measuring .850. Use the large diameter outer bearing spindle.

Note: Bring a tape measure with you to the wrecking yard because many of these vehicles also had 11-inch brakes. The rotors off of (B) cars have a 5 on 5 bolt pattern. You have a 4-3/4 bolt pattern, so you will not need the rotors. Use 12-inch rotors off a 1988-1992 1LE Camaro/Firebird GM part # GM 18016035. This is all you will need off the 88-92 Camaro/Firebird. 1LE rotors have the correct bolt pattern but use 12mm studs rather than 7/16 studs. You need to change the studs over to 7/16. We use a DBS-42 kit ($26.98) for this conversion. The wheel stud holes in the rotor will have to be opened up slightly in order to convert to 7/16 studs. A 35/64 drill bit will do the job.
The brake caliper we use is off of a 1970-1976 Camaro/Firebird. These calipers are the right width for 1LE rotors. Use an 1-1/8 master cylinder with power brakes and a 1-inch master for manual. We use an adjustable proportioning valve rather than a standard valve. If you have front drum brakes and converting to disc. You will need a proportioning valve. If you already have disc's and upgrading to larger brakes for the handling kit. Your original proportioning valve will work.

If you don't what to go through the hassle of finding all these parts. We can supply you assembled spindles ready to go.

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