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Deluxe Disc Brake Kit Fits 1964-1974 Chevy Full Size CarInfo
- Bolt on kit adds serious stopping power for 1964-72 GM A-Body, 1967-69 GM F-Body and 1968-74 X-Body
- Stock-style disc brake spindles 91034900 recommended when replacing stock drum brakes
- New 11" vented iron rotor with original 5 on 4-3/4" wheel bolt pattern and 7/16" studs
- Calipers feature larger 2-3/4" bore from 1969-77 GM midsize cars with 7/16"-20 inlet
- Includes everything needed to complete install
- Use with 15" or larger disc brake compatible wheels
An Inexpensive Disc Brake Conversion for Serious Stopping Power
In the 60’s and early 70’s, drum brakes were generally considered to be just fine for safely halting a muscle car in traffic. Disc brakes were a luxurious, extra-cost option that often only ended up under performance packages like the Super Sport or Z/28. But as time has marched on, we’ve grown accustomed to our late models with electronically assisted disc brakes on all four corners that will stop on a dime. Meanwhile, a trip across town in that old drum brake equipped Chevelle, Nova, or Camaro is an exercise in constant vigilance and planning ahead for a panic stop. It’s almost enough to take the fun out of the drive.
It doesn’t take much to drastically improve on the 19th century design of those drum brakes, especially in the front. A simple, inexpensive front disc brake upgrade using OE-style components can make a night and day difference when compared to those old, fading drums. That’s where this kit fits in. While there are bigger, more trick brake kits out there, the Speedway Motors ’64-’74 GM Car Front Disc Brake Kits comes with everything you need to ditch the drums and add a disc kit to keep your GM A/F/X body car safe in modern traffic at a price that doesn’t break the piggy bank.
Complete Kit Bolts on To Stock Disc Brake Spindles
This brake kit comes complete with everything needed to complete the install. That means bearings, seals, brackets, hardware, 11” rotors with 5 on 4-3/4” bolt pattern, ’69-’77 GM calipers, pads, and hoses are all included, saving you all the trips to the parts store to hunt down the nickel and dime parts that can make an install like this a hassle. It’s designed as a direct bolt on to stock disc brake spindles or Speedway Motors stock-style disc brake spindles, part #OEM Disc Brake Spindles. If you’re converting from drum brakes, the original drum brake spindles require that the upper threaded boss be machined to remove approximately .610” and often the hole needs to be drilled and tapped deeper. To skip the hassle and make sure that it’s done right, we recommend purchasing these new disc brake spindles when performing this swap. If you’re after a dropped stance and improved handling, we recommend using our G-Comp Spindles with this brake kit or Drilled/Slotted 1964-74 GM A/F/X-Body 11 In. Front Disc Brake Kit with drilled and slotted rotors.
This kit fits 1964-72 GM A-Body, 1967-69 GM F-Body and 1968-74 X-Body using stock disc brake spindles, aftermarket disc brake spindles, or modified stock drum brake spindles.
We recommend using our brake booster/master cylinder combo, part # 1964-1974 GM Disc Brake Booster Conversion Kit Combo with this front disc brake kit. Stock single reservoir 4-wheel drum brake master cylinders don’t have the capacity to supply the proper amount of pressure for front disc brakes. This master and booster kit also includes an adjustable proportioning valve to offer adjustment of the rear line pressure, allowing you to balance the front and rear brakes.
Also note that this kit will NOT work with 14” diameter wheels. There’s just not enough room for these 11” rotors and OE calipers inside a 14” wheel, so 15” or larger wheels that were designed to work with disc brakes must be used.
Application This Part Fits
This kit fits 1964-72 GM A-Body, 1967-69 GM F-Body and 1968-74 X-Body using stock disc brake spindles, aftermarket disc brake spindles, or modified stock drum brake spindles. When converting from drum brakes, the original drum brake spindles require that the upper threaded boss be machined to remove approximately .610” and often the hole needs to be drilled and tapped deeper. Also note that non-Chevy A bodies like Cutlass, GTO, and Skylark sometimes have different sized holes in the spindles. In these cases we recommend new disc brake spindles, part #910-34900.
Charts
910-31958 Instructions
Installation Tips
- This kit fits 1964-72 GM A-Body, 1967-69 GM F-Body and 1968-74 X-Body using stock disc brake spindles, aftermarket disc brake spindles, or modified stock drum brake spindles. When converting from drum brakes, the original drum brake spindles require that the upper threaded boss be machined to remove approximately .610” and often the hole needs to be drilled and tapped deeper. Also note that non-Chevy A bodies like Cutlass, GTO, and Skylark sometimes have different sized holes in the spindles. In these cases we recommend new disc brake spindles, part #1964-74 GM Car OEM Style Disc Brake Spindles.
- This kit will NOT work with 14” wheels. 15” or larger wheels that were designed to work with disc brakes must be used.
- We recommend brake booster/master cylinder combo, part # 1964-1974 GM Disc Brake Booster Conversion Kit Combo with this front disc brake kit. Stock single reservoir 4-wheel drum brake master cylinders don’t have the capacity to supply the proper amount of pressure for front disc brakes. This master and booster kit includes an adjustable proportioning valve to offer adjustment of the rear line pressure.
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