001 Stock looking _65 Corvair Corsa gets some subtle modifications
From the outside Lonnie Gilbertson’s RareVair retains the flavor of the ’65 Corvair Corsa’s styling as the sheetmetal modifications that were made are subtle. Under the sheetmetal the changes are anything but subtle.

Part 2: The Mid-Engine V8 Corvair Chevrolet Didn’t Build—But Should’ve

By Ron Ceridono – Photography by Lonnie Gilbertson

Lonnie Gilbertson has built race cars and hot rods of every description, as well as a two-time America’s Most Beautiful Roadster Show trophy winner. But with Gilbertson there’s always one more car to build, and as unlikely as it may seem, this time around it’s a Chevrolet Corvair. He had always liked the ’65-’69 body style, so when a suitable ’65 example was found  Gilbertson decided to build the ultimate Corvair, the “RareVair.” Had Chevrolet done this it would surely have rendered Ralph Nader, the author of Unsafe At Any Speed, catatonic.

002 Corvair had some rust repair performed on the trunk floor
Although the Corvair was reasonably solid some rust repair was necessary, such as the trunk floor that received a new stamped steel replacement.

In the Sept. ’21 issue of Modern Rodding, we revealed the mechanical transformation that Gilbertson’s Corsa coupe went through. The stock front suspension was replaced by a Fatman Fabrications bolt-in unit with Baer disc brakes and QA1 coilovers used front and rear. Of course two of the most noticeable changes are the Corvette 6.2 LS3 where the rear seat should be and the Turbo Porsche transaxle between the rear wheels.

003 The front mounted radiator gets airflow from air dams that were installed
To supply airflow to the front-mounted radiator a slot was cut below the bumper. An air dam was added to help direct air to the opening.

Read More: Building the Ultimate Chevrolet Corvair “RareVair”

As the Corvair’s original horizontally opposed, six-cylinder engine was air cooled, one of the many challenges Gilbertson faced during construction of the RareVair was mounting a radiator. That was handled by ducting air to the trunk-mounted radiator from under the front bumper and out slots cut in the hood. Coolant is delivered from and to the engine by a pair of 1-1/2 inch stainless steel tubes.

004 Air duct and radiator mount were mounted in the trunk
Inside the trunk a combination air duct and radiator mount was fabricated. Note the pair of tubes that delivers coolant to and from the Corvette LS3 in the back seat.

One of Gilbertson’s goals was to maintain as much of Corvair’s original styling as possible. However, to accommodate the fat Toyo tires that were planned the rear quarter-panels had to be pulled out to gain the necessary clearance. This was done by the very talented Jeff Lindsay, who also handled all the RareVair’s rust repair and sheet metal modifications. Inside the passenger compartment another automotive artisan, Marty Strode, fabricated the rollbar and supports and then turned his attention to forming a host of aluminum pieces, including the engine cover and center console.

005 The LS3 corvette engine gets adequate airflow from an electric fan
To provide adequate cooling capacity a radiator with the same dimensions that would be found in a Corvette was installed—due to its size it had to be mounted at an angle. To ensure adequate airflow a shroud with an electric fan was added.

At the rear of the RareVair, Gilbertson elected to include one the body’s most unique features—the Tom Phillips–built 180-degree custom headers empty into the custom exhaust system built by John Keller that dumps out between the taillights. Scoops were added to the side of the body to supply air to the Chevy V8 and to remove some of the heat from the engine compartment.

006 Vents are going to be needed for proper air flow
To provide an exit for the air flowing through the radiator, vents of some sort would be necessary. Here the proposed design was drawn on the hood.

Read More: Vintage Vibes and Wild Paint: 1963 C10

With the engine swap completed, the chassis, and body modifications handled, Ben Connally was called on to finish the bodywork and squirt the paint. There’s still more to come, our friend and super shutter snapper, Dale Moreau, will be bringing you a full-blown feature on the RareVair, so stick around for next month’s Modern Rodding—it will be worth the wait. MR

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