Although it’s currently registered in Oregon, this black Corvette was one of 3,221 1980 ‘Vettes originally sold in California with the LG4 305-cid V-8. The 305 Corvette is often reviled by enthusiasts, but was it really that bad? Let’s take a look.
The Corvette offered three engines in 1980, but only one was available in California: the LG4 5.0L (305-cid) V-8, which had 180 net horsepower, 10 hp less than the L48 5.7L (350-cid) V-8 offered in the rest of the country. The LG4 wasn’t available in non-California ‘Vettes, and California buyers couldn’t have the more powerful 230 hp L82 engine that was optional elsewhere. California buyers effectively paid a $200 premium for the 305: $250 for California emissions certification, less a $50 credit for the engine itself.
The LG4-powered Corvette was available only with Turbo Hydra-Matic. The 4-speed manual transmission, a no-cost option on 49-state cars, was not certified for California Corvettes in 1980.
The last time the Corvette was available with an engine smaller than 5.4L (327 cid) had been 1961. The only time since 1955 that the Corvette had offered a V-8 with less power than the LG4 was in 1975, when the output of the base L48 engine briefly fell to 165 hp. What the smaller displacement most cost the California-spec 1980 Corvette was not power, but torque: The LG4 had a maximum of 255 lb-ft, no better than the 1975 L48; for comparison, the 1980 L48 engine had 280 lb-ft, the L82 275 lb-ft.
Offering the LG4 in California-bound Corvettes was strictly a temporary measure. For 1980, Chevrolet LG4 engines sold in California were equipped with the new GM “C-4” engine control computer, which included closed-loop air-fuel control to help meet California’s stricter NOx standards. Chevrolet was preparing to adopt a more sophisticated version of the C-4 system in all 50 states for 1981, but in 1980, the system was only available in relatively limited numbers on a few engines. Since no other California cars used the Chevrolet 350 for 1980, Chevrolet apparently decided it was simpler to adapt the California-spec 305 for the Corvette than to certify a handful of 350s with the interim C-4 system. (Both the 350 and the 4-speed would be available again on California Corvettes for 1981.)
The buff books inevitably sneered at the smaller-engine Corvette, and practically every few months ever since, there’s been some new retrospective calling the 305-powered Corvette the worst ever built, an embarrassment to the badge.
In terms of power-to-weight ratio, the 305 wasn’t as bad as you might think, because the Corvette had also lost some weight for 1980. Base curb weight of a California Corvette was down 164 lb from 1979, so the power-to-weight ratio for the LG4 305 car was only slightly worse than a 1979 L48 automatic. The Corvette version of the LG4 engine also had 15 to 25 more horsepower than the 305 used in the Camaro, and the ‘Vette was now significantly lighter than a Camaro.
Driven back to back with a 1979 Corvette, any 1980 ‘Vette would feel a little more lethargic, although that was due in part to taller axle ratios. In 1979, you could order a Corvette with 3.36, 3.55, or 3.70 final drive ratios; 1980 models were limited to a 3.07 axle, in the interest of better fuel economy.
I haven’t seen any contemporary instrumented road tests of the LG4 Corvette, but a statistical comparison with other contemporary Corvettes and the Chevrolet Camaro is pretty interesting. All of the figures in the following table are for cars with automatic transmission. (Both the Corvette and the Camaro used the TH350C for 1980.) I followed Chevrolet’s lead and based the calculated figures on “performance weight” (base curb weight plus 300 lb), reflecting the weight of the driver, some optional equipment, and perhaps a single svelte passenger.
| Factor | 1980 Corvette LG4 (Calif.) | 1980 Corvette L48 (49-state) | 1980 Corvette L82 (49-state) | 1980 Camaro LG4 (Calif.) | 1980 Camaro Z28 (Calif.) | 1980 Camaro Z28 (49-state) |
|---|---|---|---|---|---|---|
| Engine displacement, cid | 305 | 350 | 350 | 305 | 305 | 350 |
| Factory base curb weight, lb | 3,354 | 3,358 | 3,358 | 3,503 | 3,536 | 3,571 |
| Performance weight, lb | 3,654 | 3,658 | 3,658 | 3,803 | 3,836 | 3,871 |
| Net power, hp | 180 | 190 | 230 | 155 | 165 | 190 |
| Net torque, lb-ft | 255 | 280 | 275 | 230 | 245 | 280 |
| Axle ratio | 3.07 | 3.07 | 3.07 | 3.08 | 3.42 | 3.42 |
| Power-to-weight ratio (performance weight divided by net power) | 20.30 | 19.25 | 15.90 | 24.54 | 23.25 | 20.37 |
| Torque factor (performance weight divided by net torque times axle ratio) | 4.67 | 4.26 | 4.33 | 5.37 | 4.58 | 4.04 |
From this, we can safely conclude that the LG4 Corvette was the slowest 1980 ‘Vette: It wasn’t significantly lighter than an L48 automatic, used the same axle ratio, and had almost 10 percent less torque. However, a California Corvette was still a close match for a 1980 Camaro Z28, even a 49-state Z28 with the LM1 350 engine. (A well-driven 4-speed LM1 Camaro Z28 might have had a slight edge.) Obviously, if you compared an LG4 Corvette to an older ‘Vette with a 427 or 454, the 305 car was going to lose, but that was true of most new cars of the late ’70s and early ’80s, a low ebb for domestic performance. By 1980 standards, the LG4 was still a comparative bright spot, and not nearly as catastrophically underpowered as it’s often made out to be. The heavier 1975 L48 Corvette was worse: Figured on the same basis, it had a power-to-weight ratio of 23 lb/hp and a torque factor of 4.82.
Based on all the buff book derision, you’d assume that these mild-mannered late C3 Corvettes must have been the worst sellers of all time, but they were actually amazingly popular. Corvette sales set a record in 1979, at 53,807 cars, and Chevrolet sold an additional 40,614 Corvettes for 1980 — despite a much worse economy, very high auto loan interest rates, hefty insurance premiums, and a base price that had had risen by more than $2,000 from 1979. (The Corvette’s list price also increased repeatedly during the model year, ending the year over $1,200 higher than it began.)
Car and Driver sniffed in May 1980 that the Corvette was now typically “driven by a guy with white shoes and a while belt” on his way to the country club, but that wasn’t borne out by Chevrolet’s own market research. Corvette chief engineer Dave McLellan reported in 1977 that Corvette buyers remained mostly young men. Median income was over $23,000 (the equivalent of over $122,500 today), but median Corvette buyer age was only 30, and few customers were over 50.
McLellan acknowledged that the loss of performance since the early ’70s “incurs much grumbling from Corvette enthusiasts,” but he said that buyers seemed to have accepted it, recognizing that there were few real alternatives. “Even with reduced performance the Corvette performs competitively with all but the Turbo Carrera Porsche and a few of the Italian exotic cars,” McLellan remarked. “In a sense today’s Corvette buyer takes what he can get and if he wants more, he does it himself.”
That’s apparent if you browse auction results for the 1980 Corvette, which are full of modified cars. It’s not particularly rare, and there are few permutations valuable enough to deter buyers from tinkering — nobody is likely to get too upset if an L48 or LG4 car gets a new or much-upgraded powertrain.
Nonetheless, if I somehow ended up with an LG4 Corvette in decent condition, I would be tempted to leave it as is. With only 3,221 1980 California-spec cars built, it’s actually rarer than the more powerful L82 (which went into 5,069 non-California Corvettes in 1980), and by earlier or later standards, any 1980 Corvette had only lukewarm performance in stock form. (Car and Driver recorded 0 to 60 mph in 7.6 seconds with an L82 car.) Anybody can drop an LS3 engine into a C3 Corvette, but how many people can say they own a rare original example of the Corvette everyone seems to love to hate?
Whoever currently owns the black car may have taken that attitude a bit too far. They made at least three attempts to sell it on AutoHunter in 2025, but it failed to sell yet again in December 2025, although the bidding reached $13,500, which strikes me as a decent price for an unusual but not overwhelmingly desirable Corvette.
Related Reading
In-Motion Classic: 1979 Chevrolet Corvette – My Own Piece Of The Legacy (by Joseph Dennis)
Curbside Musings: 1980 Chevrolet Corvette – Disco’s Last Stand (by Joseph Dennis)
Curbside Classic: 1981 Chevrolet Corvette – Letting Go Is Hard (by Joseph Dennis)
Pretty sure Road Test Magazine did a review of the 305 equipped Vette and if memory serves 0-60 was in the 9 second ranges and quarter mile in the 17s. Slow no doubt but remember the Turbo T/A was not much faster. Mustang was running a 4.2L and was a joke. Alas the malaise era was soon to end.
It’s all-too easy to rag on these, and I’m guilty of having done it myself in the past. Given the times, these still provided a reasonably decent amount of performance. 1980 was pretty much the low point of the whole Malaise Era.
I remember all my Hot Rodder buddies hating the Chevy 305 & 307 V8’s, they didn’t say, underpowered, they claimed bad engines period.
-Nate
Funny thing is 4 years later Toyota had the MR2, a 4 cylinder that ran similar acceleration numbers.
And was that computer the same thing as the electronically controlled rochester 4 barrel GM loved?? That was a real rube goldberg device, stuck around for WAY too long in GM’s big cars after they had introduced the much superior and simpler TBI fuel injection
The Q-Jet may have stuck around longer than it should, but calling it a “rube goldberg” device is really silly. The original Q Jet spread bore was a nice carb when it came out. Small primaries allowed economy around town under light throttle that other designs did not.
The later electronic models worked fine but were expensive to repair (like all carbs and EFI systems of the time).
Yes EFI systems were better but the QJet was a good carb and cars that had them ran well by the early 80s.
Engine/performance not withstanding the 1980 Corvette you have featured is still a piece of eye-candy for those of us that love Corvettes. My neighbor has a 1979 model – the stylists certainly made sure the car looked fast. Even if the engine is somewhat anemic it doesn’t seem to slow him down…
I got my license in 1980. I’m sure that Chevrolet wanted me to be drooling over this car, but I wasn’t. That wasn’t necessarily due to the engine power ratings, though. This Corvette was just plain OLD. They’d been building the C3 since I was in diapers, and anything resembling a performance version was gone 4 or 5 years earlier. I think the bigwigs weren’t really sure what the future of Corvette would be, so they didn’t want to put much effort into it. And it felt that way to me.
A buddy of mine received a 81 Vette in white as his high school graduation present. I was in awe.
“so they didn’t want to put much effort into it”
Actually GM put a hell of a lot of effort into a product that sold barely 30 to 40K units most years. There was a strong business case for cancelling the Vette even after strong MY 1980 sales. A small cadre of true believers got GM to spend some bucks (and a lot of effort) on the 78 refresh that made real improvements in the Vette.
My Aunt and Uncle bought a 79 L82 ( also got my DL in 1980) and it was a blast. Theirs had the 3.55 rear end and had great traction….a lot of the older muscle cars could take it in the 1/4 but fell on their face with the first turn.
The C3s get trashed but they were comparable to any other car of its class of their time.
In the final analysis if the owner is happy with what he has, enjoys driving it, is satisfied with the performance, loves how it looks, etc. that is all that really matters. If people choose to criticize him because his car is not as powerful as their imaginary dream car, so what.
I remember Motor Trend published a fastest cars article around 1978. If my memory is correct a Volare/Aspen with a properly equipped 360 and the Dodge Lil’ Red Wagon trucks both were faster than the Corvette/Z28/Trans Am.
The 1975 L48 Corvette had only 165 HP.
That is correct. Automobile-Catalogue estimates a 0-60 time of 10.4 seconds and a 1/4 mile of 17.7 sec @ 79 mph. This compares to 0-60 @ 11 seconds and 1/4 mile of 18 sec @ 76 mph for the original 1953 Vette with the blue flame 6 and a 2-speed Powerflite. Not much progress in 23 years!
Do you have any actual road tests of the time?
The people that complained the most and the loudest about the lack of performance in this Corvette, were the people that were never going to buy one, ever. However since the Corvette was the iconic “hero car” of the entire GM enterprise, it is always open season for Corvette critics.
Being a child of the ’60’s, the Vette was always one of my dream cars, though it was a dream never realized. A few years ago I met an old guy (in his 70’s) at a car show that had a later ’70’s C3 Vette. It was a bit rough around the edges, but it was one of his daily drivers. He told me that he’d bought his first old Vette when he was in high school and had always owned one since. Now he had to drive an automatic since his bum leg made it too difficult to deal with the clutch in traffic. He addressed the performance deficit by installing headers and Flowmasters and a few other mods but he kept it smog legal. This is one of the things that make post ’75 to early C4 models so unpopular, they have to largely remain stock to pass the smog test, so the owner can’t modify them much.
I have often entertained the idea of a Corvette, though I’m running out of time, I just might do it. I know that C3s are real rattle traps even when they were new. As long as it runs and looks good enough, I could be satisfied, provided that I don’t have to pay too much for it.
I can’t imagine who would welcome working on that 305 engine. The compartment is way too cramped and looks unapproachable.
Guess you have never seen under the hood of a modern transverse V6?
I vividly remember the May 1980 Car and Driver road test of the 305 Corvette. CD seemed to think that GM was being cynical with the car.
“Should we go to the bother of certifying a 350 for California, or stick them with a 305?”
“Stick it to them!”
Or something like this. It has been 46 years.
The C&D test car had the L48 350 & a 4-speed – not the 305.
https://www.caranddriver.com/reviews/a15143347/1980-chevrolet-corvette-road-test-review/
I read in Corvette From The Inside Dave McClellan says the ’81 “was the lowest-performing Vette in that era, with 190 net hp. 0-60 in 9-10 seconds, comparable to a Miata” (his words). However, I also read about an ’81 doing 60 in 7.2 in the C&D issue where other sports cars were being tested in Hocking Hills.
I saw another R&T review where an ’80 has 0-60 in 9.7 with a 17.2@81 quarter and 124 mph top speed. Not sure if that one was an ’80 LG4 305 or an ’80 L48 350! Unless they used different car in the written review than was actually tested.