Chevrolet’s top Corvette engineer has officially put an end to one of the biggest rumors in the sports car world. Tony Roma, the executive chief engineer of the Corvette, confirmed at the 2026 12 Hours of Sebring that the C8 Corvette will not get a manual transmission — and that the gearbox Tremec showed off at SEMA last year was never a real product for the car.
This is a big deal for Corvette fans who have been hoping for a stick-shift option since the C8 launched in 2020.
What the Corvette Boss Actually Said
Roma spoke directly at a public engineering session at Sebring International Raceway. He addressed the rumors with no room for doubt.
“Tremec showed something at SEMA last year that I wish they wouldn’t have shown. That is not real,” Roma said. “We don’t have any plans to talk about a manual transmission.”
He also defended the current gearbox in strong terms. Roma said the car is “faster and essentially better” with its eight-speed dual-clutch transmission. That gearbox is the Tremec TR-9080, made in Wichita, Michigan.
The Business Reason Behind the Decision
Fellow engineer Josh Holder backed up Roma with a clear business argument. He pointed to what happened at the end of the C7 Corvette’s life, when the manual option was still available.
“At the end of the seventh-generation life cycle, the penetration rate of manuals was super low,” Holder said. “The market was voting with their wallets, and we didn’t get enough votes.”
Holder also reminded fans that keeping costs down is what makes the Corvette affordable. “We are in a for-profit business,” he said.
Only about 15% of C7 buyers ever chose the manual, according to GM engineers who previously explained the decision during the C8’s 2019 debut.
How the Tremec SEMA Rumor Started
The excitement started at the SEMA show in November 2024. Tremec — the same company that makes the C8’s automatic gearbox — displayed a brand-new six-speed manual transaxle. It had the same size and same mounting points as the C8’s current automatic.
Fans went wild. It looked like a ready-made swap. A Tremec engineer later confirmed the company had even physically installed the gearbox in a C8 just to test the fit. “It fits. It’s feasible,” the engineer told Road & Track at the time.
The manual gearbox was built to handle up to 1,000 horsepower and 800 pound-feet of torque. It could also spin up to 8,600 rpm. On paper, it was more than strong enough for any Corvette.
But Tremec always said the gearbox was an aftermarket product — not something built for the factory floor.
Background: The C8 Has Never Had a Manual
The C8 Corvette launched in 2020 as a mid-engine car for the first time in the model’s history. That change to a mid-engine layout made it much harder to fit a traditional manual gearbox.
Chevrolet offered manuals in Corvettes for 65 straight years before that. The C7 came with a seven-speed manual as an option, but few buyers chose it.
C8 Sales Have Not Suffered Without One
Removing the manual did not hurt sales. The C8 has sold over 30,000 units per year for most of its life. Even in 2025, when sales dipped to 24,533 units in the U.S., the Corvette still outsold the Porsche 911, which moved only 13,574 copies that year.
Chevrolet recently confirmed a new Grand Sport trim is coming. It is expected to slot above the base Stingray and come with a more powerful V8 engine.
What Happens Next
For buyers who still want a manual C8, the only path is the aftermarket. Tremec’s six-speed gearbox is available for custom builds, but buyers would need to source a clutch pedal assembly, a shifter, and reprogram several car systems on their own. No plug-and-play kit exists.
As for the factory car, Roma’s words appear final for the C8 generation.
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