The 1996 Corvette

The Overview

Chevrolet closed the C4’s thirteen model years with two special editions and a new engine. The LT4 took the LT1’s block and added new aluminum heads with taller ports and bigger hollow-stem valves (2.00-inch intake, 1.55 exhaust), 1.6:1 Crane roller rockers, a hotter camshaft, a taller intake, a roller timing chain, a stronger crank and 10.8:1 compression for 330 hp at 5,800 rpm and 340 lb-ft at 4,500; it came only with the ZF six-speed, a 3.45:1 axle and an 8,000-rpm tachometer for its 6,300-rpm redline, cost $1,450 on an ordinary car, and went into 6,359 Corvettes, every six-speed built that year. The Grand Sport, RPO Z16, put the LT4 in Admiral Blue with a white stripe down the center, two red hash marks on the left front fender in memory of the 1963 racers, Grand Sport badges above the gills, black ZR-1-style five-spoke wheels (17 x 9.5 and 11 on the coupe, under molded rear flares to clear the 315/35 tires; 8.5 and 9.5 on the convertible), black calipers with bright Corvette lettering, black or red-and-black leather with embroidered headrests, and its own VIN sequence from 600001: exactly 1,000 were built, 810 coupes and 190 convertibles, at $3,250 or $2,880 over the base car. The Collector Edition, RPO Z15, $1,250, dressed 5,412 cars in Sebring Silver with silver five-spoke wheels, Collector Edition center caps, embroidered perforated sport seats, black calipers and chrome badges, with the LT1 and automatic or the LT4 and six-speed (2,009 took the LT4).

The rest of the line got its last round of changes. OBD-II diagnostics arrived on every car, with the LT1 retuned to 335 lb-ft at 4,000 rpm and 10.4:1 compression. Selective Real Time Damping (RPO F45, $1,695) replaced FX3, reading wheel-position sensors at each corner and adjusting each shock every 10 to 15 milliseconds, about a foot of road at 60 mph, instead of offering three driver-selected settings. The Z51 Performance Handling Package returned after five years, $350 on coupes for Bilstein shocks, stiffer springs, bushings and bars and 17 x 9.5-inch wheels on P275/40ZR17s all round, with a 3.07:1 axle on automatics; 1,869 buyers took it, and the autocrossers loved it as much as the magazines complained about the ride. The 4L60-E got better shift quality and a more durable converter, the run-flat tires (WY5) went into 4,945 cars and the spare delete (N84) into 986. Sebring Silver and Admiral Blue were exclusive to the two editions; Dark Purple, Bright Aqua and Competition Yellow fell to a few hundred cars each in the last year.

The LT4 was praised for its breadth and its 6,300-rpm willingness but the Grand Sport, at 3,350 lb on 315-section rear tires, launched no harder than an LT1 six-speed: Car and Driver ran 0–60 in 5.1 seconds and the quarter in 13.7 at 104 mph with 168 mph flat out, Road & Track 5.2 and 13.7 at 105 with 0.88 g. Production rose to 21,536 as the specials sold through, and the last C4 came off the Bowling Green line in the summer of 1996 to make way for the C5, whose hydroformed frame, transaxle and LS1 owed their development money to the car it replaced. Today the Grand Sport is the C4 collectors want: with 1,000 built, documented by VIN and bought as a last edition, low-mileage cars sold for $33,000 to $50,000 in 2026, the 190 convertibles at the top. The Collector Edition is the affordable special, worth a modest premium over an equivalent silver base car, more with the LT4; and an LT4 six-speed coupe in any color is the best-driving C4 of all and the enthusiast’s pick.

The 1996 Corvette Story

The 1996 model year would mark the final year of both the C4 and the Generation II small block engine that powered it. As such, Chevrolet was prepared to commemorate its departure by offering two special edition Corvettes, both of which would feature an upgraded version of the LT1 power plant. Denoted as the LT4, the 330-horsepower engine would be standard in a limited-edition Grand Sport, optional in the Collector Edition and available on any six-speed Corvette.

The LT4 engine featured a number of enhancements over its LT1 counterpart. To start, the LT4 received newly designed aluminum heads that featured taller ports and bigger valves; 2.00-inch intakes and 1.55 inch exhaust. Each of these valves had hollow stems that were specially designed to save weight. They each received special oval-wire springs that could handle increased lift without binding. To help increase the LT4’s valve lift, Chevrolet employed the Crane Company to provide higher ratio (1.6:1) roller rocker arms.

Revised lift specs called for 0.476 inch on the intakes and 0.479 inch on the exhaust. In addition, Cam duration was increased from 200 degrees to 203 degrees on the intake side and 207 degrees to 210 degrees on the exhaust side.

Other improvements that were developed solely for use on the LT4 included a freer-flowing intake (which featured taller ports to match the heads), a roller-type timing chain, and a compression increase to 10.8:1, up from the LT1’s 10.4:1.

Additionally, the LT4’s crankshaft, camshaft, water-pump, drive gear, and main bearing gaskets were all improved upon to bolster horsepower, while premium head gaskets were installed to deal with the extra compression. While the LT4 shared distinct components with the LT1 – such as a newly designed throttle body, the LT4’s 330 horsepower was a marked improvement of 30 horsepower over the LT1.

It was for this reason that the LT4 engine was specified for the multiple special edition Corvettes that year.

The Collector Edition (RPO Z15, $1,250), offered as a coupe or convertible to mark the end of the C4, came in exclusive Sebring Silver Metallic with silver five-spoke alloy wheels and “Collector Edition” center caps, perforated sport seats with “Collector Edition” embroidery, black brake calipers with bright “Corvette” lettering and chrome Collector Edition badges on the hood and fenders; 5,412 were built, 4,031 coupes and 1,381 convertibles, 2,009 of them with the LT4.

If the Collector Edition was a welcome addition, the limited-edition Grand Sport was nothing short of a game-stopper.

Priced at an additional $3250 for the coupe or an additional $2880 for the convertible, the Grand Sport package included exclusive Admiral Blue paint and featured a single white stripe that ran the length of the body as well as two red accent stripes (also known as “Sebring Stripes”) on the driver side front fender. This unique paint scheme was deliberately developed by GM to pay homage to the classic Corvette Grand Sport Racer of the 1960’s.

The coupe used ZR-1 wheels and tires – P275/40ZR17s in the front and P315/35ZR17s in the rear. The convertible used P255/45ZR17s in the front and P285/40ZR17s in the rear. Unlike the ZR-1, which showcased a wider backend, the Grand Sport coupe featured rear fender flares to cover the wider back tires.

The Grand Sport’s interior upholstery was offered either in an all black or a sporty red/black combination, and all of the Grand Sport interiors featured a specialized embroidered headrest which featured the Grand Sport emblem. All Grand Sports –both coupes and convertibles- were equipped with a six speed manual transmission. Likewise, all Grand Sports were equipped with the newly revised LT4 5.7 liter small-block V-8 engine. When ordered with the Grand Sport model, the engine received a special “dress” kit that included bright red paint and red ignition wires. In all, Chevy built 1,000 Grand Sports, and each was given a special, sequential serial number.

Although the LT4 engine was included as part of every special edition Corvette, it was not limited to the Grand Sport or the Collector Edition. Any Corvette built in 1996 could be ordered with the LT4 engine (for an additional $1450). Since the new LT4 engine redlined at 6,300 rpm (700 rpm more than the LT1 engine), models equipped with the LT4 engine included a special 8,000 rpm tachometer instead of the standard 6,000 rpm tachometer.

Despite its improved horsepower over the LT1 engine, the LT4 was not considered a showstopper for many automotive reviewers that year. The fact remained that while the LT4 produced an extra 30 horsepower than the LT1, there was no notable difference in acceleration. In fact, both the LT1 and LT4 equipped Corvettes ran similar 0–60 mph times. Another noted complaint of the LT4 engine was the fact that, because it lacked an engine oil cooler, it tended to run hot at sustained top speed, around 168 mph.

Further it was noted that the larger tires actually inhibited the Grand Sport’s ability to launch quickly from a standing start. At the same time, the tires were also recognized for improving the Grand Sports cornering abilities, although it was determined that they also caused excessive over-steering during extreme handling situations (while at high speeds).

Beyond the engine, other revisions were made to the entire Corvette line for 1996. The standard four-speed automatic transmission received a number of minor revisions which resulted in better shift quality. Additionally, the introduction of new torque converters promised greater and prolonged durability.

Selective Real Time Damping was introduced to replace the previous Selective Ride Control (FX3) option. Available under option code RPO F45, the Real Time Damping suspension calculated the optimal damping mode for its custom shock absorbers to maintain ride and handling quality via data that was gathered from individual sensors at each of the four wheels. This system could alter the load level/resistance of each shock individually, and it made these adjustments at intervals of once every 10 to 15 milliseconds, which translates roughly into approximately one foot of road traversed when travelling at a speed of approximately 60 miles per hour.

After being absent for five years, the Z51 Handling Package returned to the options list for the 1996 Corvette coupes. The option once more offered Bilstein shocks, unique front and rear springs, bushings and stabilizers, and 9.5 inch-wide, 17 inch wheels with P275/40ZR17 tires. When ordered with an automatic transmission, a 3.07:1 axle ratio was specified. As with before, the Z51 package was criticized as generating too harsh a ride, especially on roads that required even minor repair. However, it was agreed that the re-introduction of the Z51 option was ideal for drivers who were purchasing Corvettes to race in autocross events.

Did you know? Like the 1978 Pace Car and the 1990–1995 ZR-1, the 1996 Grand Sport was built with its own Vehicle Identification Number (VIN) sequence (600001–601000), separate from the other Corvettes of that year. The 1996 Grand Sport is readily identified by its striking Admiral Blue and Arctic White stripe paint scheme. What many do not know, however, is that the pinstriping on either side of the large white center stripe, is actually a two-color decal, both blue and white. This was done to ensure a perfectly straight line. In early production 1996 Grand Sports models, there is a small area behind the hatch roof (and in front of the panel that attaches to the rear window) that is taped instead of painted. The tape is 1 inch long and about 18 inches wide whose purpose was to eliminate a problem area in the paint booth during manufacturing.

Of course, over its 43 year history, the Corvette had seen many evolutions of its former self, constantly transforming peoples’ perception of what a sports car should be. From the fiberglass bodied 1953 Motorama prototype up through the 1996 Grand Sport, the Corvette had evolved into a truly remarkable driving machine – one that was fully capable of holding its own with some of the stoutest competition from around the world. Now, with the next iteration of Corvette looming on the horizon for the 1997 model year, many were already questioning whether or not General Motors would surpass the C4 with their next generation Corvette. Little did anyone realize that the technology that had been developed for the C4 would continue to be utilized, making way for a Corvette that was more technologically savvy than anything that been seen before it.

Production Volumes

As the model year drew to a close, and the fourth generation Corvette prepared to pass the torch to its successor, it was satisfying to General Motors executives to see a small, but significant, sales increase had occurred. While few denied the probability that much of it had to do with the introduction of both the Grand Sport and the Collector Edition, the sales numbers had increased to a total of 21,536 units. Although General Motors noted the increase in sales over the previous year, it was also acknowledged that these increases were still a far cry from the C4’s 1984 introductory model, which had sold more than 51,000 units in its first year of production. Still, the C4 had evolved from a respectable, if somewhat lackluster sports coupe into a true performance car that continued to push boundaries with each passing model year. Despite a price rise of nearly 70 percent from 1984 to 1996, the Corvette had remained profitable year after year.