Tag: zl-1 corvette

The Great 454 ZL-1 1969 10-Second Monster Corvette Pumpkin!

Published on by Scott

Dateline: 10.31.11

December ’69 Motor Trend reports on Chevy’s 10-second, 454 ZL-1  Monster Pumpkin Corvette!

Forty years ago it took a lot to get a car to run 10s in the quarter-mile. You needed a BIG engine, open tuned headers, a giant gas sucking Holley carb, slicks, ear plugs, and a lot of NERVE! Today, it’s no biggie for a performance car to run low 11’s. Lingenfelter Engineering has been able to get a mildly modified ZR1 to run low-to-mid 9s with ALL of the stock creature comforts. All you have to do is HOLD ON!

No, back in the old muscle car dayz, low 11s and high 10s in the quarter-mile was Super Stocker and Modified Production territory. Low 10s and 9s was the realm of Pro Stockers with the likes of Grumpy Jenkins, Sox & Martin, Dick Landy, Dyno Don Nicholson and a few dozen others. In their day, they were the rock stars of drag racing.

When the December 1968 issue of Hot Rod Magazine  hit the news stands, with a full-cover shot of the all-aluminum 427 ZL-1 engine, heads spun like Linda Blair in The Exorcist! The headline at the top of the cover read, “A 625-HP LOOK AT: CHEVY’S ALL-ALUMINUM 427.” While today we might say, “There’s no substitute for a supercharger,” back then, the expression was “There’s no substitute for cubic-inches. If there’s enough meat left in the block, just bore it out and insert bigger pistons. Chevy’s 427 had been in production since ‘66, so when the ‘70 models came around, what was Chevrolet to do? Bore, Baby, Bore!

The cast iron 454 was a no-brainer, but what about the all-aluminum ZL-1? Just to see what kind of response they’d get from the press (as if they weren’t sure) Chevrolet engineers Tom Langdon and Gib Hufstader built a special 454 version of the ZL-1, coupled it with a Turbo 400 3-speed tranny, a high-stall torque converter, tall gears, and 9-inch slicks. Yes, it was a quasi-Super Stocker and they let the automotive press make passes on a 1/4-mile stretch at the test track!

Continue reading “The Great 454 ZL-1 1969 10-Second Monster Corvette Pumpkin!” →

Corvette Timeline Tales: July 4, 1971 – John Greenwood Wins July 4th Race

Published on by Scott

John Greenwood & Bob Johnson July 4th Win at Michigan International Speedway!

Here’s Greenwood’s Corvette at Daytona in 1971.

July 4, 1971 was a great day for America, Corvettes, John Greenwood, and Bob Johnson! At Michigan International Speedway, Greenwood and Johnson picked up a big win in a 4-hour endurance race in a field of 36 cars. Greenwood’s car was sporting an early version of his stars and stripes livery that would eventually become his signature trademark.

We covered Greenwoods BF Goodrich ZL-1 Corvette last month HERE. And it just happens that today (July 4, 2011) Blog.Hemmings.com also covered the car because it’s going on the block at RMAuctions soon. So, if you’ve ever had the itch to own an early Greenwood ZL-1 Corvette, here’s your chance. Bring lots of cash or a BIG line of credit! Continue reading “Corvette Timeline Tales: July 4, 1971 – John Greenwood Wins July 4th Race” →

427 ZL-1 John Greenwood & A NHRA Top Fuel Record Holder Chevy Top Fueler!

Published on by Scott


John Greenwood’s 427 ZL-1 BF Goodrich Corvette Race Car

Special thanks to www.RollingThunderz.co

Aluminum engines are so common today that no one even notices. But back in the ‘50s and ‘60s, aluminum engine components were considered trick hardware. All-aluminum high-performance engines were only found in exotic European cars. Having learned his engineering and racing craft in Europe, Zora Arkus Duntov first proposed an all-aluminum engine as part of the 1957 Q-Corvette proposal. Also included in the proposal was an aluminum transaxle. This was actually part of a larger plan called the Q-Chevrolets for 1960. Chevrolet chief engineer, Ed Cole, envisioned the entire line of Chevrolet cars equipped with the transmission mated to the rear axle as a way of vastly improving the interior space of every Chevy.

The plan was eventually scrapped for cost reasons, but Duntov was definitely keyed in on the idea of adding aluminum engine and drive train components into his Corvettes as a way to lighten the car. Through the ‘60s, aluminum parts slowly crept into the Corvette. But it wasn’t until the introduction of the ‘67 L-88 that the automotive press and fans really took notice of the lightweight hardware.

 


One of Duntov’s favorite playgrounds – the GM test track!

But when Zora and his team unleashed the all-aluminum ZL-1, jaws dropped and eyes popped! The thought of a solid-lifter, 12.5:1 compression, big carb 427 that weighed as much as a small-block was just OUT’A SIGHT! FAR-OUT! GROOVY, MAN!

Hot Rod Magazine splashed the all-aluminum ZL-1 on the cover and caught a lot of heat for spinning the fan on an engine that was obviously not running or attached to anything. The yellow headers or ANY headers for that matter were NOT part of the ZL-1 package. Unfortunately for fans of lightweight Corvettes, the ZL-1 was for all intent and purposes a teaser option. Yes, the ZL-1 was an official option costing $4,718, PLUS $1,032 for the L-88, on top of the $4,781 base price of the ‘69 Vette. Only three ZL-1’s were “officially” built and all are accounted for. However, there may have been 10 or so ZL-1 Corvettes built as demo cars. CARS Magazine editor, Marty Schorr was one of the fortunate few that got to drive a ZL-1 ‘69 Corvette and it was NOT one of the three surviving ZL-1 Corvettes.

 

Special thanks to http://www.rmauctions.com/

Fortunately, for racers, such as John Greenwood, ZL-1 engines could be purchased as crate engines. While Greenwood wasn’t the only Corvette racer to use a ZL-1, his stars and stripes, BF Goodrich-sponsored Corvette became a legend. One ZL-1 engine even made its way into Jim Butcher’s Top Fuel dragster and actually held the NHRA elapsed-time national record for a few week in 1973. The all-aluminum ZL-1 gave Butcher a 500-pound advantage over the cast iron Hemi dragsters of the day!

It’s too bad that it would take 28-years before a production Corvette would finally be powered by an all-aluminum engine. The LS1 engine powered the ‘01 C5-R Corvette to Corvette’s first big class win at le Mans. Today’s all-aluminum, 638-horsepower LS9 engine is the most powerful production car engine ever produced in Detroit’s history and is ONLY available in a Corvette!

Scott

Would a Fuelie ZL-1 work for ya? YIKES!!!

NHRA Gatornationals – Hemi fans COULD NOT BELIEVE that Jim Bucher’s little Chevy Top Fueler set the NHRA Top Fuel ET National Record with a 6.09 ET! Too bad the car didn’t dip into the 5’s!

I covered the 1969 ZL-1 Corvette in VETTE Magazine in July ’09 in ICS No. 149

John & Burt Greenwood’s C4 Corvette “G” Supercars

Published on by Scott

John & Burt Greenwood Build Super C4 Corvettes

This was to be Greenwood's $425,000 Supervette.

John Greenwood is a Corvette racing legend. Actually, it was the “John and Bert” Greenwood story here because John’s brother Bert was very much part of the story. Through the ‘70s, Greenwood Corvettes were fearsome and very entertaining. It was a classic, American little guy vs the big dogs. The Woodward Avenue street racer put the fear of big-block Chevy power into the competition. While all of the above is correct, sometimes early childhood impressions have profound effects on a lad’s life.

The Greenwood brothers had an inside connection – their Dad. Sr. Greenwood worked at the GM Tech Center and on weekends would take John and Bert to see some of the prototype cars in development. (Can you imagine that?) The inspired boys started their careers with a tube frame go-cart, powered by a Briggs & Stratton lawn mower engine. Not long after getting his drivers license, John was street racing a big-block ‘64 Corvette. Street racing lead to road racing with John winning the A/Production championship in his first year. Continue reading “John & Burt Greenwood’s C4 Corvette “G” Supercars” →