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Lonnie Gilbertson’s RareVair

1. From the outside Lonnie Gilbertson’s RareVair retains the flavor of the ’65 Corvair Corsa’s styling. The sheetmetal modifications that were made are subtle, under the sheetmetal the changes are anything but.

1. From the outside Lonnie Gilbertson’s RareVair retains the flavor of the ’65 Corvair Corsa’s styling. The sheetmetal modifications that were made are subtle, under the sheetmetal the changes are anything but.

RareVair typography

Part 2: The Corvair Chevrolet Didn’t Build—But Should’ve

By Ron CeridonoPhotography by Lonnie Gilbertson

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onnie Gilbertson has built race cars and hot rods of every description, as well as a two-time America’s Most Beautiful Roadster 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.

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.

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.

One of Gilbertson’s goals was to maintain as much of the 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 sheetmetal 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.

At the rear of the RareVair, Gilbertson elected to include one the body’s most unique features—the Tom Phillips–built 180-degree headers empty into the exhaust system built by John Keller that dumps out between the taillights. To supply cool air to the Chevy V-8 and remove hot air from the engine compartment scoops were added to the rear quarters.

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.

Corvair trunk floor that received a new stamped steel replacement

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

front-mounted radiator a slot, cut below the bumper
3. 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.
a combination air duct and radiator mount is fabricated in the trunk
4. 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.
a radiator with the same dimensions that would be found in a Corvette is installed at an angle
5. 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.
the proposed design is drawn on the hood
6. 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.
Mako shark–style hood vents are cut with the flaps carefully bent down
7. The Mako shark–style hood vents were made by cutting the fronts and sides of the openings, then the remaining flaps were carefully bent down.
Toyo R888R street-legal road race tire during installation
8. For tires Gilbertson selected Toyo R888R street-legal road race tires. They will be mounted on ET Sebring pin-drive, knock-off wheels.
rear sections of the front fenders are brought out slightly
9. To complement the modifications at the back of the body the rear sections of the front fenders were brought out slightly, as Gilbertson describes “to help the overall aesthetics.”
the quarter-panels are cut loose and moved out 2-3/4 inches
10. To accommodate the rear tire-and-wheel combo, the quarter-panels were cut loose and moved out 2-3/4 inches. New metal was added to the lower portion of the body while maintaining the factory body lines.
fresh air system is delivered by a pair of 4-inch tubes joined together in a “Y” that connects to Holley Sniper throttle body
11. Fresh air from outside the engine compartment is delivered to the LS3 by a pair of 4-inch tubes joined together in a “Y” that connects to Holley Sniper throttle body.
GT40-style air scoop on the passenger back side
12. Cool air for the engine’s intake system comes through GT40-style air scoops added to both sides of the body.
a two-piece aluminum “dog house” fabricated by Marty Strode covers the mid-mounted V-8
13. Covering the mid-mounted V-8 is a two-piece aluminum “dog house” fabricated by Marty Strode.
the engine’s air inlet tubes, running outside the engine cover
14. To help keep them cool (plus they look cool) the engine’s air inlet tubes are outside the engine cover.
the rear braces for the rollbar can be seen
15. Here the rear braces for the rollbar can be seen. They extend through the engine cover and tie into reinforced sections at the rear of the chassis.
view of the custom center console that houses the Patrick Motorsports shifter assembly
16. The custom center console houses the Patrick Motorsports shifter assembly and covers the stainless steel tubing for the engine’s cooling system and heater.
inlets for ducts are cut into the tops of the rear fenders
17. In an effort to pull hot air away from the engine compartment, inlets for ducts were cut into the tops of the rear fenders.
small scoops are added to the openings in the fenders
18. To direct air into the engine compartment small scoops were added to the openings in the fenders.
the end of the left engine compartment air inlet can be seen
19. Here the end of the left engine compartment air inlet can be seen. Both inlets will be hidden from view with the upholstery in place.
air inlets for the original, rear-mounted six-cylinder engine are located behind the rear window
20. Behind the rear window are the air inlets for the original, rear-mounted six-cylinder engine. Scoops were added to them to help direct air into the rear of the engine compartment to further aid in cooling.
a small spoiler is added at the back
21. While Gilbertson chose to only make modifications to the body made necessary by the engine swap, a small spoiler was added at the back.
exhaust outlets in the rear of the body
22. One of the less-than-subtle body modifications made to the RareVair are the exhaust outlets in the rear of the body. The sound is awesome, and believe it or not they light up (you’ll have to wait for the feature to see that).
RareVair gets the first few coats of BASF Glasurit Pull Me Over Red
23. With the bodywork completed the RareVair received the first coats of BASF Glasurit Pull Me Over Red.
top view of the RareVair body with a completed paint job of Pull Me Over Red, and a blue stripe
24. A hint of things to come. The RareVair will have racing stripes similar to those found on the ’68 Corvette “Old Scrappy” masquerading as a Ferrari that ran the 24 Hours of Le Mans in 1972.
Modern Rodding

VOLUME 2 • ISSUE 13 • 2021