L88 Corvette Brakes and Vacuum Advance Talk at Russo & Steele - Power Brake TV





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Published on Jun 23, 2012

Here Bob and Matt visit Russo & Steele in Scottsdale, AZ. We saw many fine cars - many, many fine cars. This 68 L88 Corvette caught Bob's eye. He saw it from a mile away, but you can also see it from the scan they provided that it had the L88 option code, and J56 Performance Brakes.

GM rated these engines at 430 horse but they were closer to 600 horsepower. They have always been of particular interest to Bob since he has an L88 block, and because they had such an enormous cam that there was no vacuum to operate the brakes (which is intriguing to a brake guy). It was definitely built as a race car, made for the race track, fortunately/unfortunately though every car guy wants a race car for the street. With little power assist in the brakes though, the car was no good for stop and go freeway/street traffic. So in analyzing whether to sell this car to the public, the factory decided not to sell it to the public, and to build the car for racing use only.

Why the L88 was special was that it came with aluminum heads, a cowl induction air cleaner, power brakes, deleted vacuum advance, 13:1 compression, and a radical cam. The aluminum heads got 100 pounds off the front end which was great for keeping the tires equal temperature in road racing. It had a special hood as well that was shaped for the cowl induction, but also just to clear the size of the engine.

-Matt Sweeting

Visit Russo and Steele at http://www.russoandsteele.com, they will be in downtown Monterey during Race Week.

Sponsored by SPE∑D (Sweeting Performance Engineering Marketing & Design)
- You'll drive a lot faster if you're confident your brakes work. Performance Air-Hydraulic Systems & Bosch Hydro-Boost™ Kits http://www.powerbrakeservice.net

About SPE∑D:
We build and Rebuild endless varieties of new and classic brakes for every type of vehicle and trailer. It started with George Sweeting as Power Brake Service in 1950 who worked for the railroads and Lockhead, then run by his son Bob Sweeting who learned about modifying cars while drag racing in the 60's, and Bob's son Matt Sweeting (who grew up in all of this) is now running SPE∑D, a company that designs and fabricates good looking and well working automotive products.

PBS was a Warehouse Distributor for Bendix for 20 years until they sold they sold their Power Brake Division to Bosch, which is when we became a special modification contractor with Bosch for their power brakes - which come on most new American vehicles. Our ability to design brake systems, rather than just replace rotors and pads, has taken us to amazing places and we have worked on amazing projects. We have:

Hydro-Boost Conversions
Vacuum Brake - Conversions, Upgrades, and Modifications
Wilwood and Brembo Disc Brake Kits
Master Cylinders
Stainless Braided Hoses
Classic Car / Muscle Car Stock Brake Restoration and Rebuilding (Corvette, Camaro, Chevelle, Mustang, Ford & GM Truck, Mopar, Rolls Royce)
Light Truck / Medium Truck Hydro-Boost Replacement Parts and Conversions
Medium Truck / Heavy Truck Hydro-Max, Air brake, and Air-hydraulic systems - and Hydro-Max Conversions for the obsolete Delco Hypower
Conversions for the obsolete Buick Grand National, T-bird SC, Land Rover, Jeep and all other electric brake booster / electric powermasters
Modified brakes for Altered Bed Fleet Vehicles
Modified sensitivity for the Handicaped
Disc/Drum and Disc/Disc Proportioning Valves

We have worked on everything from propane powered trams to roller coasters, cranes, parade floats, multi engine street rods, classic european cars, double decker buses, and a Freightliner racing truck. Our favorite is working on big engine muscle cars that make too little vacuum and need more stopping power.


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