The highlight for 1973 was the new steel front bumper wrapped in body-color urethane plastic designed to meet the updated 5 MPH crash standards. This redesigned bumper added 2 inches and 35 lbs to the car. However, 1973 Corvettes feature significantly more insulation than previous C3’s, and Chevrolet claims that cabin noise is reduced by 40% compared to ’72 models
The ’73 Corvettes also feature revised body mounts that are now made up of rubber encapsulated within a steel sleeve (instead of a solid mount). This allows for cushioning of vertical movements (improving ride/reducing NVH) while the steel sleeve limits lateral deflection during high cornering forces. This means that ’73 models are just as capable in the corners as the ’72 models with their solid mounts
A period Car and Driver road test summons up the ’73 revisions: “All of [these changes] completely transform the Corvette’s personality. It now has the smoothness and silence expected — but frequently not present — in a Grand Touring car. The creaking long associated with the Corvette’s fiberglass body is much more subdued now and great strides have been made in interior sound level.”
As more and more emissions components take up space and increase engine bay heat, GM required a solution to help reduce intake temperatures. The answer for 1973 was a cowl induction hood. The proven design controls air intake supply using a solenoid-actuated valve built into the hood. Sucking in cool air was so effective that any car that didn’t have this hood during testing needed nearly 1 extra second to hit 60 MPH compared to cars with the cowl hood, according to Zora Duntov (the “Father” of the Corvette)
Duntov also decided to replace the removable rear window with a fixed piece of glass for the ’73 model year. “At 140 mph, with the roof panels off and the side windows up, the air in the cockpit is still,” said Duntov. “The wind goes right over the top. Remove the rear window and you get a buffeting backdraft.”. Hence the fixed rear window!
Key Model Year Changes:
First year of the painted front bumper (2″ longer)
The 454ci engine gains 5hp
First year of radial tires
Fenders now have a lower duct opening (instead of vent grilles)
Hood (which is now a cowl induction design) extends to cover the wiperblades. Air supply to the intake was controlled by a solenoid controlled valve built into the hood
Rear window is now fixed and no longer removable. With the rear window storage shelf now gone, storage space is increased slightly by 2″
Redesigned wiper system
Body mounts are redesigned and now include rubber to reduce vibrations. The special design results in no loss of rigidity
Both doors now employ internal steel beams per federal safety regulations
Extra sound deadening was added throughout the car
Thicker carpeting and mats are now used throughout the interior. All of this extra insulation reduced cabin noise by a claimed 40%
For the first time since 1956, there was no solid lifter engine option
The heavy duty suspension is now readily available (it was difficult to order in ’72). The HD suspension comes with heavy duty brakes together in a single package (code Z07, $369)
51K original miles
Original paint – never had any bodywork
Owned for 34 years as the second owner
Everything is original, including the interior
454 big block w/ the M-22 Muncie 4spd
T-Tops. Factory alarm. Power Trim
Owned by a true car enthusiast
Location: Westerly, Rhode Island – (more photos below)
*SAE rated from factory. May not reflect current output.
*Performance numbers pulled from either the factory brochure or reputable automotive road tests.
*Base price when new does not reflect original MSRP of this particular car, nor does it reflect what the original owner paid for it.
*Advertised price at time of posting. Sellers can raise or lower prices on their original ad at any time. Click on the original ad to view current price/availability.
Mileage Disclaimer: NOC has not confirmed if the mileage stated by the seller is true and accurate. It is up to the buyer to verify these claims. Vehicle history reports, service records stating mileage, and even inspections of odometer tampering are recommended.