Thursday, May 2, 2024

2001 Corvette Z06: The First Modern Day Z06

  

2002 Corvette Z06


Unless you've been living under a rock, you know about the extremely potent 2023 Corvette Z06 that is on its way to the market sometime in late 2022. If you want to read about that, just look up any automotive website on the web and you can find out everything you know or you can go to this ride-along video/article with top engineers on the project, written by me for Muscle Cars & Trucks (C8 Corvette Z06 Engineers Share Untold Details On New Supercar: Video.


1963 Corvette Z06


1963 Corvette Z06

Since we all should know everything about the new Corvette Z06, I decided that we should take a look back at the birth of the first modern Corvette Z06. But first, let's take a short look at the birth of the very first Z06. 

The first Z06 became available in 1963 and there were only 199 produced and sold. These Corvette Z06's sole purpose was to be sold for road course racing. They came with a 327 cu.in. (5.4-liter) engine, four-speed transmission, a beefed-up suspension, a massive brake system upgrade that included dual master cylinders, and an optional 36.5 US gal (138 l; 30 imp gal) tank.

The thing about these C2 Corvette Z06s was you didn't just go to the dealership and buy one, you had to know someone who knew what boxes to check in the order form if you wanted one of these race-ready (RPO Z06) Corvettes, and just like the 2001 Corvette Z06, you didn't get many luxuries with the car, it was truly for going fast. 


2001 Corvette Z06


2021 Corvette Z06

This Corvette was built to surprise and dominate the market. The Z06 was designed for the track and pushed the boundaries of what was really possible from a production car that could drive to the track, make better times than its competition, and drive back home with the air conditioning kicking and the radio blasting. 

Basic Spec:

  • 5.7-liter LS6 V8
  • 6-speed manual
  • 385 horsepower and 385 lb-ft of torque
  • New FE4 Suspension (four-wheel independent suspension)
  • Bose speaker system
  • Leather bucket seats
  • 17" front and 18” rear rims wrapped in Goodyear Eagle F1 SC tires
  • Hardtop only
  • Brake coolers
  • Curb weight: 3,118 lbs.

  • Gas Mileage: 17 city / 26 highway

Z06 Engine Corvette

Engine And Transmission

The LS6 is essentially a more powerful version of Corvette's LS1 V8. The LS6 engine upgrades start with a redesigned intake manifold with better-flowing internal passageways. Reengineered cylinder heads create more flow through the intake and exhaust valves, and the combustion chambers were redesigned to reduce valve shrouding.

All these upgrades led to a higher compression ratio which then led to a redesigned thin-walled cast-iron exhaust manifold system to provide a smoother exit for the combustion escape.

Of course, all this extra flow wouldn’t be worth much without a redesigned camshaft. So a beefier cam was installed by Corvette engineers with more valve overlap and greater valve lift. Chrome-vanadium-steel valve springs and stronger pistons cast from a more durable alloy were implicated in the engine’s design for toughness. And finally, the LS6 was engineered with windows cast into the internal crankcase walls to help air retreat from the underside of the burning hot pistons.

This new engine setup gave the New Corvette Z06 385 horsepower at 6,000 RPMs and 385 lb-ft of torque at 4,800 RPMs, and a redline RPM of 6,500. In between all the power and the rear wheels was a beefed-up clutch (with lighter pedal effort), a larger-diameter driveshaft, and a revised six-speed manual transaxle. This new M12 gearbox was introduced with shooter 1st, 2nd, and 3rd gears to better utilize the new higher-revving LS6. All gears were 10-16 percent shorter except for the 4th gear which remained the same.

Corvette Suspension

2001 Corvette Z06 Suspension

More power always means more changes all around. To accommodate the power of the LS6, Corvette went with a new FE4 suspension that included revised shock calibrations, a stiffer rear transverse leaf spring setup, and stiffer anti-roll bars for the front and rear.

To add ground support, each corner of the Vette receives 1-inch wider tires, bringing them up to 9.5-inch wide in the front and 10.5-inch wide in the back. New custom light-weight 10-spoke wheels were wrapped in Goodyear F1 Eagle tires: 265/40ZR-17s in the front and 295/35ZR-18s rears. The F1 Eagle SC tires were designed with more flexible sidewalls achieved by doing away with the famous run-flat tire design. This permitted a half-degree more negative camber to keep the tread flatter during hard cornering for track use.

To prove the Corvette was built for business, engineers found places around the car where they could shave pounds off the curb weight. Helping save weight was the deletion of the run-flat tire design, mufflers were made from Titanium, and the windshield and rear glass were all lightened to help bring the Corvette’s curb weight down to 3,118 pounds, that's 38 pounds lighter than its original form. A lot of weight was saved in the Titanium mufflers alone, but the weight of the new suspension offset the weight-saving by a lot.  

2001 Cobra R

Step Aside Cobra R

The Cobra R was making some big waves at the track. Performance numbers were pretty impressive, and the Corvette Z06 was Chevrolet's answer to those performance numbers.

The Cobra R and the Z06 were pretty close in performance numbers at the time (numbers for Z06 below). The Cobra R turned numbers out of its 5.4-liter that looked a little like this: 385 horsepower and 385 lb.-ft. of torque (the same as the Z06), 0-60 mph in 4.7 seconds, a quarter-mile time of 13.2 (Ford tested) and 12.9 (Motor Trend tested) with a top speed of 170 mph, and stops from 60-0 in 127 feet.

Although the numbers were somewhat close, the Corvette beat out the Cobra R in other places. The Cobra R lacked air conditioning, an audio system, rear seats, sound dampening, and cruise control. The Corvette also lacked a back seat, but that's because it was never meant to have one, it wasn't a compromise. Also, because of the limited number of Cobra Rs that were built, the sticker price showed $55,5ish, but you couldn't buy one for under $75,000. The Corvette Z06 stuck pretty close to its price tag of just under $50,000 without a lot of limited edition inflation.

2001 Corvette Z06

Let's Go Over Some 2001 Corvette Z06 Numbers 

The 2001 Corvette Z06's proof of superiority is in the numbers. A 0-60-mph time is recorded at 4.3 seconds, and a 70-mph to 0 stop takes only 152 feet. In a quarter-mile sprint, the Corvette can cover it in 12.7 seconds at 113 mph. Hitting a 150 mph will only take you 28 seconds total, while a top speed of 170 mph is easily manageable. Although the top speed does suffer a little bit as the C5 Vettes will hit 175 mph, that's because of the Z06 closer transmission clutch gear ratios. 

Hitting corners is another place where the Corvette Z06 shows no mercy to its competitors. Pulling .98 Gs in and out of corners is just what this sports car does, and that actually beats out all other sports cars out of there including the Viper GTS and the Ferrari 360 Modena, which are above the Corvette Z06s price bracket by a lot. 


Racing Z06 Corvette

Z06 Performance Built

Making sure everything was performance-built was what this Corvette was all about, even both the dual mesh grilles in the front and the rear brake coolers in front of the rear wheel wells are completely functional. 

The 2001 Corvette Z06 is just like the new Z06s, although classified as a sports car, they perform like a supercar compared to its competition.


Wednesday, February 7, 2024

Rare Chevrolet 454 SS Half-Ton Pick-Up From The Early '90s

   1990 Chevy SS


With only 17,000 produced between 1990-93, these Chevy 454 SS trucks are some of the rarest Chevrolet C1500s of the 90s. In fact, purchasing one of these badasses was the only way you could get a 454 cu.-in. big-block stock in a half-ton truck. 

There is nothing really too special about these trucks. Let's face it, in this day and age, a higher trim-modeled crossover could take it off the line and beat down the quarter-mile. But it is outfitted for a 454, meaning a healthier one could be built and dropped in with no problem. 

Also, it's a truck, and you can always do some cool stuff to a truck. A Cowl Induction hood, lowering springs, rims, etc. — with the right imagination, you can turn a 454 SS truck into a show stopper without hurting its original value. 




Power and Specifications

  •  230 - 255 horsepower
  • 385 - 405 lb.-ft. of torque
  • HD 4-speed automatic transmission
  • 3:71.1 - 4:10 rear-end ratio 
  • 10 mpg city
  • 500 lbs. max payload
  • Dual exhaust
  • Bilstein Shocks
  • 7.7 seconds 0-60 mph 
  • 15.9 seconds 87 mph - 1/4 mile
  • Colors: Black / Summit White / Victory

Chevrolet 454 SS



The Chevy 454 SS trucks had some serious competition in the early 90s — the GMC Cyclone, Typhoon, and the Ford Lighting. But for Chevy, this was their way of showing everyone that people still craved a big-block even if it wasn't the fastest truck on the market. 

You might come across one of these sweet Chevys for sale with a nice price tag on it. They are not very sought-after by vehicle collectors right now, so if you find one in good shape, it might not be a bad investment. They have the potential to be nice little street cruisers with a lot of old-school power. And for you old-school gearheads, that might be a class you'd fit right into. 

Saturday, November 25, 2023

1959 Corvette: Unbeatable Purple People Eater MKIII

  

1959 Corvette Purple Eater MKIII


1959 Corvette Purple People Eater MKIII


Oddly enough, this Corvette was named after the very odd song - "One Eye, One Horn, Flying Purple People Eater”, a Sheb Wooley hit back in the 50s. 


There were two reasons for the paint job and the name for this 1959 Corvette. The idea for the paint job was because the Corvette racing team was having trouble finding their car in the pits and on the track - all the cars looked too similar to one another. Kind of like finding your car in a mall parking lot on the weekend, the week before Christmas.


So a standout color scheme was born. The color scheme that was created was a metallic purple for the base color and bright white for the trim and decals. Next, they needed a name for the Corvette, so they decided on the "Purple People Eater". It was kind of a no-brainer since the song itself was topping the charts in 1958-59, and the Purple People Eater Corvette was eating up all the competition on the track every single weekend.

Nickey Chevrolet In Chicago 

Back in the 50s, a lot of racing teams were owned by dealerships and this Corvette team was no different. Nickey Chevrolet in Chicago was the owner of this team and, at the time, the largest factory dealership specializing in high-performance muscle car sales and service. Their parts department functioned as a huge speed shop. 


When it came time for the Nickey Chevrolet Race Team to hire a driver and a mechanic, Nickey Chevrolet took some help and advice from none other than the legendary Zora Arkus-Duntov, the Corvette engineer and designer who made Corvette what it is today. Zora suggested they use an aggressive driver named Jim Jeffords and a talented mechanic who was known as the guy who could turn a “Javelin into a competitive race car," Ronnie Kaplan. 


The “Purple People Eater” Corvette Eating Up The Competition

The Purple People Eater Corvettes (yes, there were three altogether) raced during the ‘58 and ‘59 seasons. During that time, they won the SCCA National B-Production titles and a race at Nassau Speed Week. During the 1959 season, the cars never finished worse than second place in any race, always making the Purple People Eater the car to beat at the track.


Ordering Your Own Corvette With Race Specs

If you ordered a factory Corvette with race specs in the late 1950s, you received a Corvette with heater delete, and a heavy-duty brake and suspension package. 


285 cu.-in. Chevy engine



The Corvette came with a 283 Chevrolet V-8 with factory Rochester fuel injection and a four-speed manual transmission, the same way the Purple People Eater was raced. In an interview, Kaplan said, "GM helped with some technical advice, and I got that fuel injection figured out pretty quick." It was very reliable. I told Jim to keep that engine at about 6,000 rpm, and it never broke. He is a very big, strong man and was tough on equipment. I swear he could break off a shifter."  


Where Did The Purple People Eater End Up?












The last one known to exist is the “Purple People Eater MKIII”. It was sold for $800 to a Chip Miller and Ken Heckert, who raced the 1959 Corvette for a short time at Autocross events. Not knowing its future historical significance, it was parked and used as a workbench for a very long time.


After 14 years of being a garage workbench, the sharp eye of car expert/enthusiast Mike Philsbury notices that there were a few things different about some of the parts and options on the car. After some deep research, Mike, Chip, and Ken confirmed that they were eating their lunch every day on the 1959 Corvette “Purple People Eater MKIII”. 


The American Heritage Award In 2002

Knowing what they knew, Chip and Ken went to work and restored the Corvette back to its racing form - color and all. 


In 2002, the Corvette was awarded the American Heritage Award. Thanks to two guys who just wanted a Corvette to go autocross racing in, and a car enthusiast named Mike Philsbury, the 1959 Corvette “Purple People Eater MKIII” lives on.

Thursday, November 9, 2023

1966 Chevrolet Corvair Yenko Stinger: Rare And Cool

 

1966 Chevrolet Corvair Yenko Stinger

Everyone should know about the iconic late 60s and earlier 70s Yenko drag cars that donated the tracks—Camaro, Nova, and Chevelle. But would you be alarmed to know that Don Yenko was working his high-performance magic long before those muscle cars came along? 

Don Yenko had his eyes on a different type of racing before he built horsepower heavy-drag cars. In the late 50s to the mid-60s, he was into road course racing. He first was racing Corvettes professionally but was getting beat pretty consistently by the Shebly. Don realized the reason was the Corvettes had become just too heavy to compete. 

Corvair Corsa


Enter The Corvair Corsa

The Corvair Corsa weighed 500 pounds less than the Corvette, making it a very viable candidate for some of Yenko's genius power upgrades. So in true Don Yenko fashion, he went to the drawing board and came up with the blueprint needed to retrieve the success he was looking for. 

Yenko Upgrades For The Corvair

  • Forged Pistons
  • Ported Cylinder Heads
  • High-Performance Distributor
  • Stiffer Suspension
  • Cadillac Dual Master Cylinders for Brakes
  • Light Weight Flywheel
  • Four Speed Manual
  • Limited-Slip Differential (3.89 rear gears)
  • Added Oil Cooler
  • Quicker Steering Ratio
  • Removed Rear Seats (making it eligible to be labeled a sports car and save on weight)
  • Front Spoiler
  • Rear Fiber Glass Engine Cover w/Spoiler
  • Aftermarket Steering Wheel

Time To Get In Sync With SCCA Regulations 

It turns out that the SCCA didn't have too much of a problem with the new Corvair race car entering the competition. Instead of giving Don Yenko a hard time, the SCCA's two biggest requests to give the car the SCCA homologation (stamp of approval) were to have at least 100 road-capable Yenko Stingers produced and to have the car painted in white and blue. White and blue were the American colors used to identify American cars on the race course, as every country had its own color codes to follow. 

Needing to have all 100 cars done by January 1st, 1966 to compete in 1966—already being late November gave Don one month to complete the project. Don and his men worked long hours, seven days a week, all through December with the expectation of one day, and that was Christmas. Despite the grips and grimes of the overworked workers, they proudly finished the quota in time.  

Covair Yenko Engine Bay



Four Separate Power Levels

All Stingers came with a 165 cu.-in. (2.7-liter) flat-six engine setup with four carburetors that offered four different Yenko power options. The base Yenko option came with roughly 160 horsepower, from there it went up a level to 190 horsepower, then leveled up to 220 horsepower, and for the big dog of them all, you could get one with 240 horsepower. The different options were mainly so the Yenko Stinger could qualify to race in all road course classes. 

Interesting Fact 

Yenko's daughter received a Stinger to drive when she first got her driver's license. Two weeks into driving, she had an unfortunate accident that sent her headfirst into a utility poll. Because of the engine being in the rear and the spare tire being in the front trunk, the Corvair basically bounced off the poll instead of crushing the front end and sending the engine into the front seat. For the car that has been dubbed "unsafe at all speeds," Yenko's daughter calls it the car that is "safe at all speeds." 



Friday, October 6, 2023

1970 Buick GSX Stage 1 455: Ten Things To Know About The Torque Monster Muscle Car

 
1970 Buick GSX

From 1970 to 1072, Buick sold their rare GSX muscle car to the public, finally getting an edge over their other A-Body competitors. The Chevelle SS, GTO Judge, and Olds 4-2-2 weren’t quite their enemies, but Buick needed to bring something to the table to compete with them. The GSX and the GSX Stage 1 did that and more for Buick. Hosting more power and torque, better times at the race track, a sportier suspension, and a more comfortable interior with better materials, these classic cars put Buick at the top of the muscle car list.

1970 Buick GSX Spoiler

With eye-catching stripes, a front and rear spoiler, a hood tach, and the GS ram air hood, the GSX was definitely a car that would get you noticed when driving down the road. And if you felt like you weren’t getting noticed enough, a pedal-to-the-metal action to activate Buick's massive torque offering would burn the tires off with ease—letting everyone around you know that your Buick GSX meant business. Tough to drive when you lack traction, but fun to drive if you knew what you were doing.

All the muscle cars from this era were fun, but they were being produced on borrowed time. When the full weight of stricter emissions standards was implicated, the muscle car industry and its success in pleasing gearheads were over.

10. The GS455 Stage 1 Didn't Draw Enough Attention

1970 Buick GS455

Although the Buick GS Stage 1 shared the same A-body structure as the GTO Judge, Chevelle SS, and the Oldsmobile 422, Buick just couldn't get their sales up because they couldn't shake the stigma of being a car that your grandmother would drive. So mid-way through the production year of 1970, Buick came out with the stout, sporty-looking Buick GSX.


9. The Buick GSXs Are Limited Edition

White Buick GSX

It may not seem like it because there is an abundance of GSXs out there, but many of them are clones. If you go to the GS Nationals in Kentucky, it’ll seem like there are way more than just the numbers that are shown to be produced. But thanks to companies like T/A Performance from Arizona—people have the opportunity to own an almost identical GSX without paying the price of a low-mileage real GSX.


Black and Gold Buick GSX

Nowadays, with the way technology is, it is very hard to tell the difference between a real GSX and a clone without an official build sheet. But to put the numbers in perspective, there were 678 Buick GSXs built in 1970, 124 built in 1971, and only 44 built in 1972. Sure, building a clone for a good price as an average car guy is a good thing, but for the serious car collector, it makes it seem their super rare numbers matching GSX is a little less important or rare when you can’t tell the difference between a real one and an imposter.


8. Autmoblies to "To Light Your Fire" Buick's Slogan


Buick "Light Your Fire"

Depending on who you ask, either the Buick slogan campaign helped both Buick and the Doors or it helped Buick and hurt the Doors. The Slogan comes from a famous Doors song, “Come on, Baby, Light My Fire.” GM paid the touring band $75,000 for the use of the words in print, radio, and TV ads. 

The new GSX sport appearance package and the 1966 song lyrics were a campaign to bring the fire that the GSX needed to help Buick shake the grandma’s church-going grocery-getting reputation it acquired in the past.

Black and Green Buick GSX

On tour at the time, minus Jim Morrison, the Doors had no problem with the idea, but Morrison was furious. Apparently, Morrison was so enraged that he threatened to set a Buick on fire on stage during their next concert. He wanted his bandmates and the band’s label (Elektra) to cancel the contract, but the damage had already been done.


7. Underrated Horsepower And Torque Rating


GS Buick 455 Stage 1 Engine Bay

It was widely known that the advertised 360 horsepower and 510 lb-ft of torque was underrated by a lot. Of course, Buick wanted to let people know, but then they would have to worry about being restricted and ultimately forced to eradicate the building of the powerful GSX Stage 1 455 in 1970.

It was widely known that the advertised 360 horsepower and 510 lb-ft of torque was underrated by a lot. Of course, Buick wanted to let people know, but then they would have to worry about being restricted and ultimately forced to eradicate the building of the powerful Stage 1 455 in 1970.

Most people, including NHRA, claimed that the engine probably put out 400+ horsepower. Using the GSX's time in the quarter-mile and the weight of the car, experts who tested the Buick knew that there was more horsepower than what was being advertised.


6. Motor Trend Names the 1970 Buick GSX “The Quickest American Production Car” 

Buick GSX Moving Fast

Although the 1970 Buick GSX was named the quickest, the 1971 and ‘72 GSXs fell victim to the emission laws and received lower compression V8 engines. In fact, you were even able to order up your GSX with a 350, 400, or a 430 cu.-in motor, unlike in 1970 when a 455 cu.-in. engine was your only option. You still got the sporty look, but the power the Buick had was starting to take a huge hit. The only good thing for Buick was that everyone else in the industry had to follow the same emission rules and regulations, making your typical car guy very sad.

1970 Buick GSX


5. The Ram Air Hodd and Housing Never Really Functioned

455 Stage 1 Buick Engine

In theory, the ram air hood on the Buick GSXs should have helped whatever powerplant you had under the hood gain about 8% horsepower, at least that’s what Buick was claiming. Unfortunately, it didn’t. In fact, most experts who tested the ram air system claim to have noticed no difference. Even worse, in race testing, experts noticed that the housing and the scoops themselves were too oddly shaped and even restricted flow.

Taking the whole ram air system off and letting the carburetor breathe without the ram air housing actually promoted a little better performance. These air cleaner housings do look cool, but they don’t serve up any extra horsepower gains.


4. There was an Internal Band on Large Buick cu.-in. Engines

Buick Engine Dyno

Lifting the large engine band was a no-brainer for Buick because they weren’t just competing against their A-body siblings, but they also had to throw down with Fords and Hemis. Buick knew if they were going to keep up with all the other muscle cars, a 400 cu.-in. engine just wasn’t going to cut it. They also knew they were going to have to make more changes than just engine displacement upgrades.


3. Heavy Duty Suspension, Disc Brakes, Wheels, and Tires

1970 Buick GSX

To add to the performance of the GSX, Buick made sure that the suspension could handle the power. A front anti-roll bar was included, along with stronger shocks and rear lower control arms. All the suspension bushings were upgraded to stiffer high-performing bushing. Also included was a quick-ratio steering gearbox to give the driver a better road feel.

For the brake system, there were a few different options. There were 11-inch ventilated rotors in the front with signal-piston calipers as long as you order the Stage 1 455 GSX. In the rear, there were upgraded drum brakes and power assist was optional. On different orders, you might have received drum brakes all the way around.


2. Find That GSX Build Sheet 

GSX Build Sheet

Finding the build sheet for a GSX is a big deal. What the build sheet says will give you an idea of how much you should be paying for a particular vehicle. Even if a true GSX is a little beat up, paying big bucks for one isn't uncommon and could still be very well worth the money. But if you pay big bucks for a GSX, and it’s really just a Skylark in disguise, you can lose big money.


Buick GSX Build Sheet

There is no particular place to look for a build sheet. Buyers have mentioned finding them in all kinds of different places. If the owner hasn’t found one yet, you can try looking under the carpet, in the rear seat cushion springs, under the dash, but on top of the gas tank in between the sound deadener is the most common place to find a lost build sheet.


1. The Little Extras That Make The GSX Different From GS

1970 Buick GSX

There were some other features that you would get with the GSX that you wouldn’t get with lower-trim level Buicks. Color-matching mirrors and headlight bezels added to the colorful look of the GSX. The rear spoiler was an option on some GS Buick 455s but with the GSX package, it was standard.

Buick GSX Spoiler

Other features were a standard heavy-duty cooling system, the option of a close-ratio four-speed or three-speed manual, or a TH400 automatic transmission. For the rear gear ratio, if you order a Stage 1 package, you would get bumped up to a positraction 3.64:1 axle that would help you burn the tires and create smoky hole shots whenever you wanted to.

GSX Grille