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588 Posts
My friend David owns this car. I work for a historic racing team and we usually take about 10 cars to the Monterrey Historic races at Laguna Seca. Quite a few of the west coast guys on this forum have stopped by at the races and said hello. David pitted near us in 2009 and I took this picture.

It's mid pack car at best. I would make a bunch of changes to make it better, but in the spirit of the rules of nearly the same as back in the day it is what it is.


4,075 Posts
The relatively small amount of reading I've done on Greenwood's accomplishments, led me to believe that he was some kind of automotive genius.

588 Posts
The relatively small amount of reading I've done on Greenwood's accomplishments, led me to believe that he was some kind of automotive genius.
Thick wallet or genius depending on how you look at it. Just ask your self how much of #75 is really Corvette? Kind of like NHRA ProStock Harleys. I think the only Harley part is they put on a factory circular cover plate on the lower engine.

I work on these old cars and nothing was genius on #75. Look at the time frame. They already have F1 and IMSA cars. Greenwood corvettes were crude big motored GT class cars.

The can-Am cars were one of the places where real thinkers were employed

4,075 Posts
Thick wallet or genius depending on how you look at it. Just ask your self how much of #75 is really Corvette? Kind of like NHRA ProStock Harleys. I think the only Harley part is they put on a factory circular cover plate on the lower engine.

I work on these old cars and nothing was genius on #75. Look at the time frame. They already have F1 and IMSA cars. Greenwood corvettes were crude big motored GT class cars.

The can-Am cars were one of the places where real thinkers were employed
Anything to back up your claims? Because I'm pretty sure I can find info to the contrary.

588 Posts
Anything to back up your claims? Because I'm pretty sure I can find info to the contrary.
Backup what claim? It's just a junky car put together with existing parts available during that day. Right down to the air craft brakes being used on the Lola and McLaren cars.

The #75 doesn't even have high tech fuel injection that was readily available at the time

I can't remember what the #75 has on it for a rear 6 link, but most of them used Jaguar or a copy of Jaguar produced here in the US like the guilstrand (SP?)

You really need to go to a historic race and look at those old cars. Another really crappy car is the Cobra's. Unsafe except for a straight line. They are nothing compared to the quality construction of the Lola built GT40's

I guess the real question is why do you think that these old GT cars were something special?

4,075 Posts
They came out with a 4 link IRS. I'd have to double check, but I think GM incorporated something similar in later production corvettes.

This is from their site. If they weren't innovators, I don't know why these magazines wrote so many articles.

Over thirty years of developing, racing, promoting, and selling America's First Sports Car doesn't go unnoticed, and John and Burt's contribution to motorsports and automotive design has been chronicled in many articles, books and advertisements.

The following is a partial list of publications that have commented on at least one aspect of the Greenwood saga.

Magazine/Book Month Year Article Title
25 Years of Corvette Perf. Special 1977 Greenwood's Racer
America's Best Corvette 1984 Screamin' Yellow Zonker
America's Best Corvette 1984 How to Go Racing
AutoCar Jan 1975 Ultimate American Sports Car
AutoKracht May-Jun 1987 Corvette Greenwood
AutoWeek Dec. 6 1975 Greenwood Storms Daytona
AutoWeek Jun. 9 1980 Customizers add pep to the Corvette
AutoWeek May 11 1981 Greenwood's tree bears fruit
AutoWeek Apr. 1985 Gambling on a sure thing
AutoWeek Jan 25 1993 Greenwood
AutoWeek Mar 13 1995 Greenwood G-383
Blue Bars May-Jun 1973 Blue Bars Visits Greenwood Racing
Blue Bars Nov-Dec 1979 Blue Bars Feature Car
Canadian Classics Jun. 2003 Rudy Braun's # 05 Trans Am/Greenwood
Canadian Classics Jan. 2004 Rudy Braun's Old Blue
Car & Driver Mar. 1975 Greenwood/Corvette Takes Daytona
Car & Driver Mar. 1976 IMSA Chooses Cars & They Aren't Porsches
Car & Driver Oct. 1977 Big John's Comeback
Car Craft Dec. 1976 Ad- BFG with Greenwood Turbo
Cars: Corvette Annual Annual 1976 (Greenwood's) Corvette Speed Secrets
Cars: Corvette Annual Annual 1976 History of Racing Corvettes (Part II)
Cars: Corvette Annual Annual 1978 How To Build a Stingray Hatchback
Cars: Corvette Annual Annual 1978 How To Build A Sportwagon
Cars: Corvette Annual Annual 1978 Frank J. Dominiani
Cars: Corvette Annual Annual 1977 Gabbin' With Greenwood
Cars: Corvette Annual Annual 1978 Gabbin' With Greenwood
Cars: Corvette Annual Annual 1977 Requiem for a Lightweight
Cars: Corvette Special Feb. 1973 The Street Is Neat
Cars: Corvette Special Feb. 1973 Super Sealer
Cars Magazine Dec. 1975 Corvette Speed Secrets
Chevy Power Nov. 1977 Greenwood Builds em' Right
Classic American Oct. 1994 Greenwood's G-Force 'Vette
Competition Corvettes Special 1980 Plastic Thunder 1975-78
Corvette Cars & Parts Dec. 2000 Corvettes In Miniature
Corvette Corner April 1976 Greenwood Corvettes
Corvette Corner May 1976 The Changing Face Of Sebring ('76)
Corvette Corner Sep. 1976 That Corvette Charisma
Corvette Corner Feb. 1977 Corvette Power Storms Daytona (IMSA 250)
Corvette Corner Mar. 1977 Scrappy Remembered
Corvette Corner Apr. 1977 24 Hours of Daytona
Corvette Corner Jun. 1977 Sebring 1977
Corvette Corner Jul. 1977 Vette Power Wings to Victory at Road Atlanta
Corvette Corner Nov. 1977 Greenwood Exclusive
Corvette Corner Aug. 1978 Cover Shot - JLP tubeframe Racer
Corvette Customizing Book 1981 Stingray Custom Showcase
Corvette Customizing Book 1981 Greenwood Street Wing
Corvette Customizing Book 1981 Build A Greenwood Turbo
Corvette Customizing Book 1981 The Ultimate Station Wagon
Corvette Enthusiast Aug. 2003 Greenwood History
Corvette Enthusiast Dec. 2006 The Spirit Cars
Corvette Enthusiast Jan. 2007 Early Rising Drop-Top
Corvette Fever May-Jun 1979 Eckler Ad
Corvette Fever Jul. 1980 Ralph Eckler, Fiberglass King, pt 1
Corvette Fever Jul-Aug 1981 The Greenwood Daytona Corvette
Corvette Fever Jul-Aug 1981 Own Your Own Greenwood Daytona
Corvette Fever Aug-Sep 1982 Ad
Corvette Fever Aug-Sep 1982 John Greenwood on recent events
Corvette Fever Jun-Jul 1982 Turbo Corvette: An Act of Heresy?
Corvette Fever Jun-Jul 1982 Ad
Corvette Fever Jan-Feb 1983 Phil Currin: Corvette Trans-Am Driver
Corvette Fever May-Jun 1983 Ad
Corvette Fever Oct-Nov 1984 VIP -Vette Improvement Program
Corvette Fever Oct-Nov 1984 Biographical Profile of John Greenwood
Corvette Fever Aug. 1990 Greenwood Corvette
Corvette Fever Dec. 1991 The Third Car (#49)
Corvette Fever Jul. 1991 The Stars And Stripes Fly Again
Corvette Fever Aug. 1991 Greenwood G-572
Corvette Fever Jun. 1992 The Road to LeMans
Corvette Fever Oct. 1993 Greenwood Daytona Turbo
Corvette Fever Jun. 1994 Greenwood G-383
Corvette Fever Mar. 2004 John Greenwood's Corvette Adventures
Corvette Fever Mar. 2004 Mike Brockman and John Greenwood
Corvette Magazine Sep. 2005 Wide Ride (Spirit of New Mexico '74)
Corvette News Apr-May 1971 King Of The Asphalt
Corvette News Feb-Mar 1971 Atlanta's ARRC
Corvette News Jun-Jul 1971 Sebring's Last Hurrah
Corvette News Feb-Mar 1972 ARRC
Corvette News Jun-Jul 1972 5th Annual Final Sebring
Corvette News Jun-Jul 1972 It's a Drumbuggy
Corvette News Oct-Nov 1972 The Only Thing is Winning
Corvette News Oct-Nov 1972 24 Hours Of Le Mans
Corvette News Feb-Mar 1973 Long Days Journey into Night - Daytona 24
Corvette News Jun-Jul 1973 Sebring '73
Corvette News Oct-Nov 1973 Elkhart Lake Double Header
Corvette News Jun-Jul 1974 Bench Racing with John Greenwood
Corvette News Jul-Aug 1975 21 Hours of Daytona
Corvette News Jul-Aug 1975 Weekend Warriors
Corvette News Apr-May 1979 Phil Currin Blazes the IMSA Trail
Corvette News Dec-Jan 1979 Pickett Buries Porsche in Road America T/A
Corvette News Feb-Mar 1979 Pickett Wins SCCA Trans-Am Championship
Corvette News Oct-Nov 1979 Trans-Am (Round Two)
Corvette News Oct-Nov 1979 Rose Festival Trans-Am
Corvette News Oct-Nov 1979 American Custom Industries
Corvette News Mar-Apr 1981 Corvette History 101
Corvette News Fall 1991 Red, White and Wonderful
Corvette News Winter 1991 Making Time Fly (Pictorial history of Corvette)
Corvette News summer 1992 Pride of America
Corvette News summer 1992 The G572
Corvette Performance Book 1977 Greenwood's Racer
Corvette Racers Book 1992 Corvettes in the Seventies
Corvette! Sensuous American Book 1977 John Greenwood: Terror of Woodward
Corvette: A Piece of the Action Book Corvette People
Corvette: 50 years of Rolling Thunder Book 2003
Corvettes @ Carlisle Aug. 1995 Chip's Choice
Corvettes @ Carlisle Aug. 1996 Chip's Choice
Corvettes @ Carlisle Aug. 1998 Chip's Choice
Corvettes @ Carlisle Aug. 1998 Brother Against Brother
Cruisin' New England Jul. 1997 Greenwood '75 Corvette Sportwagon
Custom Vettes 1980 Outrageous Designs from John Greenwood
Eckler's Corvette Parts Catalog 1979 John Greenwood Designs
Eckler's Corvette Parts Catalog 1980 John Greenwood Designs
Fast Chevys Book 1996 John Greenwood Recalls His Racing Days
Hi-Performance Cars Feb. 1973 The Street Is Neat
Hi-Performance Cars Feb. 1973 Super Sealer
Hi-Performance Cars Feb. 1973 Ad- John Greenwood Wrote The Book
Hot Rod Mag.: Corvette Special 1977 The Greenwood Missle Works
Hot Rod Mag.: Corvette Special 1977 Domestic Bliss
Hot Rod Mag.: Corvette Feb. 1980 The ABC's of Corvette Customizing
Hot Rod Mag.: Hot 'Vettes Dec. 1994 Greenwood 'Vette
Keepin' Track of Corvettes Nov. 1976 Rick Mancuso - Sebring GT
Keepin' Track of Corvettes Jan. 1977 Rick Mancuso (profile)
Keepin' Track of Corvettes Jun. 1977 Eckler Ad for Hatchback
Keepin' Track of Corvettes May 1978 Phil Currin (Profile)
Keepin' Track of Corvettes Oct. 1978 John Greenwood (Profile - Part 2)
Keepin' Track of Corvettes Sep. 1978 John Greenwood (Profile - Part 1)
Keepin' Track of Corvettes Dec. 1979 Monterey Grand Prix
Keepin' Track of Corvettes Feb. 1979 What's It really Like Out There?
Keepin' Track of Corvettes Apr. 1980 Phil Currin
Keepin' Track of Corvettes Jan. 1980 Pickett car (sketch) on rear cover
Keepin' Track of Corvettes Jan. 1980 Martin Turbosystems
Keepin' Track of Corvettes Mar. 1980 ACI - Greenwood Ad
Keepin' Track of Corvettes May 1980 Eckler - Greenwood Parts Ad
Keepin' Track of Corvettes Feb. 1981
Keepin' Track of Corvettes Jul. 1984 Eckler Corvette Daytona
Keepin' Track of Corvettes Aug. 1989 Corvettes In Miniature
Model Car Racing Jul - Aug 2004 Greenwood Corvette from Monogram
Modern Motor Jan. 1974 Greenwood's Trans-Am Race Car
Modern Motor May 1975 Daytona 500 race
Pop. Hot Rod: Corvettes Special 1980 Candy Custom
Pop. Hot Rod: Corvettes Special 1980 Corvette Hatchback
Road & Track June 1975 John Greenwood - Corvette God
Road & Track Mar. 1976 Corvette & Super Corvette
Road & Track Mar. 1976 About The Sport
Road & Track Special 1984 Corvette & Super Corvette
SHARK Quarterly Spring 1995 Stars & Stripes (Part 1)
SHARK Quarterly Summer 1995 BFG Lifesaver Racer (Part II)
SHARK Quarterly Summer 1995 Phil Currin
SHARK Quarterly Winter 1995 "The ""Spirit"" Cars"
SHARK Quarterly Winter 1995 Lance Smith - Greenwood Collector
SHARK Quarterly Winter 1995 Setting the Record Straight (Part 1)
SHARK Quarterly Fall 1996 Dave Force's Customer Car #12
SHARK Quarterly Spring 1996 Third Coil-over Car
SHARK Quarterly Spring 1996 "The ""Customer"" Cars"
SHARK Quarterly Spring 1996 Setting the Record Straight (Part 2)
SHARK Quarterly Summer 1996 "The ""Swiss Cheese"" Car"
SHARK Quarterly winter 1996 Paul Canary: Car Collector
SHARK Quarterly Fall 1997 The Other Tubeframe Racer (Part 2)
SHARK Quarterly Fall 1997 Greenwood: The Turbo Cars (Part 2)
SHARK Quarterly Spring 1997 John Paul, T&R, Greenwood Tubeframe
SHARK Quarterly Spring 1997 This Glass Hauler was Meant to Be
SHARK Quarterly Spring 1997 Bob Johnson: Driving Lesson from a Vette Legend
SHARK Quarterly Spring 1997 Greenwood: The Street Cars (Part 1)
SHARK Quarterly Spring 1997 Paul Canary and the John Paul, Sr Car
SHARK Quarterly Summer 1997 The Other Tubeframe Racer (Part 1)
SHARK Quarterly Summer 1997 Greenwood: The Turbo Cars (Part 1)
SHARK Quarterly Summer 1997 Searching For The Great Sharks
SHARK Quarterly Winter 1997 Greg Pickett (Part 1)
SHARK Quarterly Spring 1998 Greg Picket (Part 2)
SHARK Quarterly Spring 1998 The Greenwood Spirit of Sebring '75
SHARK Quarterly Spring 1998 John Paul, Sr
SHARK Quarterly Spring 1998 Dennis Tracy
SHARK Quarterly Summer 1998 Greg Pickett's 1980 Kevlar Car
SHARK Quarterly Summer 1998 Dave Kunicki's Greenwood-Style Racer
SHARK Quarterly Summer 1998 Jim Kinsler Fuel Injection
SHARK Quarterly Summer 1998 John Greenwood's Crossram Manifold
SHARK Quarterly Fall 1999 A Tale Of Two Turbos
SHARK Quarterly Spring 1999 Greenwood Sebring '75 Returns Home
SHARK Quarterly Spring 1999 Fred Cady Decals
SHARK Quarterly Spring 2000 The Turbo Vettes (Part 1)
SHARK Quarterly Spring 2000 Phil Root's Turbo
SHARK Quarterly Summer 2000 The Turbo Vettes (Part 2)
SHARK Quarterly Summer 2000 12 Hours of Sebring
SHARK Quarterly Summer 2000 The Editors - John Gibson
SHARK Quarterly Summer 2000 Vettettes
Stingray '82 (Dutch) June 2005 One Big Wing
Super Chevy Feb. 1977 The Sebring GT
Super Chevy Apr. 1981 Advertisement -- ACI
Super Chevy '83 Corvettes 1983 Eckler's Daytona
SuperAuto Illustrated Apr. 29 1987 Greenwood "Aero +" Corvette
TopWheels Aug. 1987
Turbocharging 1979 Greenwood's Turbo Corvette
Vette Winter 1976 A Man For All Seasons
Vette Dec. 1978 WagonMaster
Vette Dec. 1978 Safety Fast
Vette Dec. 1978 The Missle-Maker Strikes Again!
Vette May-Jun 1978 The Can-AM Connection
Vette Nov-Dec 1978 Greenwood’s New Turbo Stingray
Vette Dec. 1979 Greenwood Goodie Guide
Vette Nov-Dec 1979 Build a Greenwood Turbo Car
Vette Sep-Oct 1979 Eckler Café Racer II
Vette Jan-Feb 1980 Greenwood Koni Shock Treatment
Vette Jan-Feb 1980 Greenwood's Yellow Wagon
Vette Jul-Aug 1980 Road Racer or Café Racer
Vette Jul-Aug 1980 Greenwood’s Back
Vette Mar-Apr 1980 Inside Greenwood Koni Shocks
Vette Mar-Apr 1980 Greenwood’s Street Wing
Vette Mar-Apr 1980 Going For It
Vette May-Jun 1980 One for the Road
Vette Sep-Oct 1980 The Thrill of Victory, The Agony of Defeat
Vette Sep-Oct 1980 Phil Currin, Full Time Racer
Vette Sep-Oct 1980 How to Install Shocks the Right Way
Vette Dec. 1980 This is the Best Day of My Life
Vette Jan-Feb 1981 The Boss is Back
Vette Jul-Aug 1981 The Gospel According to Greenwood
Vette Jul-Aug 1981 World Class Corvette (Daytona ’80)
Vette Jul-Aug 1981 The Greenwood Daytona Corvette
Vette Jul-Aug 1981 Can-Am with Class
Vette Mar-Apr 1981 Station Wagon Fever
Vette Mar-Apr 1981 Greenwood’s Twin Turbo Hood Treatment
Vette May-Jun 1981 Legends in Their Own Time (Geenwood)
Vette Oct-Nov 1981 Turbo Daytona Corvette
Vette Oct-Nov 1981 Anatomy of a Race Car (Greenwood Daytona)
Vette Oct-Nov 1981 It's The Wheel Thing!
Vette Oct-Nov 1981 Ad
Vette Oct-Nov 1981 Chevrolet Stops panzer Invasion
Vette Apr-May 1982 This Turbos for Touring
Vette Apr-May 1982 Do It Yourself Daytona Louvres
Vette Aug-Sep 1982 Ad
Vette Aug-Sep 1982 Preparing Yourself for Racing
Vette Dec-Jan 1982 Build the Ultimate Café Racer
Vette Dec-Jan 1982 This Could Be The Start of Something Big
Vette Feb-Mar 1982 Café Racer Street Science
Vette Jun-Jul 1982 Low Buck Steering Trick
Vette Jun-Jul 1982 Competition Improves the Breed
Vette Jun-Jul 1982 Tire and Vehicle Dynamics
Vette Jun-Jul 1982 One More Time (GTO racer)
Vette Jun-Jul 1982 Duntov's Diet Delights
Vette Nov. 1982 Ad
Vette Nov. 1982 Spoiled Rotten
Vette Oct-Nov 1982 Le Mans
Vette Apr-May 1983 Racing - IMSA GTO
Vette Aug-Sep 1983 More Fun and Games w/Friendly Policeman
Vette Aug-Sep 1983 Greenwood GTO
Vette Dec-Jan 1983 Watkins Glen
Vette Feb-Mar 1983 The Wide Bodies
Vette Jun-Jul 1983 Traffic Can Be the Key to Winning
Vette Jun-Jul 1983 Zora’s Lightning One
Vette Oct-Nov 1983 Giving a hard lesson in Defensive Driving
Vette Apr-May 1984 Coming Up the Hard Way
Vette Aug-Sep 1984 Gratten au Gratin
Vette Dec-Jan 1984 Snatching Away Victory at Watkins Glen
Vette Feb-Mar 1984 Where the rubber Leaves the Road
Vette Jun-Jul 1984 The Spina bifida Corvette
Vette Oct-Nov 1984 Dutch Treat
Vette Apr-May 1985 …the first Greenwood Corvette
Vette Apr-May 1985 Beyond the ZL-1
Vette Dec-Jan 1985 Road Atlanta and Peter Gregg
Vette Dec-Jan 1985 Nelson Ledges Ledger
Vette Feb-Mar 1985 The Owens Corning Showdown
Vette May 1988 Turnkey Customs
Vette Dec. 1989 10 Most Outrageous Corvettes
Vette Apr. 1990 Ad - Greenwood C4 rear spoiler
Vette Jul. 1991 Currents - Greenwood Supercar
Vette Sep. 1992 Great Expectations
Vette Feb. 1994 Wagon Ho!
Vette Jan. 1994 Greenwood G350SC
Vette Jul. 1994 Stars & Stripes L-88
Vette Jul. 1995. Greenwood Corvette
Vette Aug. 1996 Greenwood Ground Effects
Vette Mar. 1997 Daytona Turbo
Vette Sep. 1999 Sebring '75
Vette Jul. 2001 #48 Race Car
Vette Apr. 2002 IMSA Race Car
Vette Feb. 2003 Talkin' Bout a Revolution
Vette Jan. 2004 New Kid on the Block
Vette Aug. 2005 Tire Tester (BFG #48)
Vette Jan. 2006 That's One Big Wing
Vette Feb. 2006 I Got No Body - G4 Hood, Louvers
Vette Feb. 2006 Flash Black - Greenwood GTO
Vette Power Apr. 1977 Scratch My Hatch
Vette Power Apr. 1977 The Greenwood Machines
Vette Power Apr. 1978 The Greenwood Machines
Vette Power Summer 1978 Turn, Baby, Turn
Vette Quarterly Summer 1976 The Greenwood Connection
Vette Quarterly Summer 1976 Fuel Cells Science
Vette Quarterly Winter 1976 A Man For All Seasons
Vette Vues May 1976 Sebring '76
Vette Vues May 1977
Vette Vues Aug. 1978 The Products/Cars of John Greenwood
Vette Vues May 1995 The Evolution of Greenwood
Vette Vues Dec. 1995 Corvettes Carlisle
Vette Vues Jan. 1998 Model Scene
Vette Vues May 1998 The Daring and Courageous Racers
Vette Vues Jun. 1998 Vette Vues - Model Scene
Vette Vues Oct. 1998 Vette Vues - Model Scene
Vette Vues Nov. 1998 Corvettes at Carlisle
Vette Vues Feb. 2001
Vette Vues, Model Facts Book Various Greenwood models
Vintage Motorsport Oct. 2002 The Incredible Hulk
Wide World of Corvettes Annual 1975 Greenwood's Racer

588 Posts
Just go look at all the racing Vettes from that time frame. There is nothing high tech or innovative about them. All they had to do is walk around the pits and look at how real race cars were built and then back engineer that into what they had. Like my Sorry Vette brakes overheat! What are you guys using. Oh, we have Lockheed ... brakes that never over heat. So John goes and buys Lockheed brakes

They were just low budget race cars built to compete in a lower level of racing.

I've met people like you that are very proud of their 1972 Baja Bug with a racing history. It's still crap even if it won it's class at the Baja 500 or 1000.

We could get a Porsche guy in here on the forum that could come up with a 1000 articles praising Porsche's innovations. You just need to get a grip on reality that poor people by Vettes, the next up the food chain is the viper owner, higher yet is Porsche owners, then you have the under $250,000 crowd of European sports cars. Then you have the select few that buy the up to $1.3 Million dollar super cars. Even these guys are poor compared to the ones who have $100 million dollar car collections.

We sir are just poor ass Vette owners. :laughing:

4,075 Posts
According to their website, the C5 suspension was similar to one of theirs:

The suspension didn’t go unnoticed as this was John Greenwood’s forté. Rear Koni coilover shocks and heavy duty sway bars were a given, while the rear suspension utilized a unique upper and lower A-arm configuration, not unlike that of the 1997 Corvette. This “radical” configuration virtually eliminated the dive and squat associated with hard braking and acceleration. The physical location of these suspension pieces necessitated the formation of a fiberglass interior rear floor. The rest of the interior remained stock except for the boost guage neatly integrated into the dash. The serial plaque on the ashtray door indicated which of the three Turbo GTs you were riding in.


4,075 Posts
Interesting info from the Greenwood site...

The widebody or slab-side cars were the next evolution after our Greenwood team cars. The widebody car was first introduced at the Detroit car show in Cobo Hall in 1974. It was dubbed the Batmobile by the press and it would have been the next generation of BFG cars if that contract had continued. As it happened, it was destined to be a “team” car.

There are a lot of details about the 1974 car which might be interesting to various people but I think it is important to share a lot of the credit with some very special people. The flares were developed with a lot of help from Zora, Jerry Palmer and Randy Wittine. Zora was always eager to help with ideas and to explore new concepts. Randy Wittine did the aerodynamics and styling stuff. Jerry Palmer, who eventually became head of Styling, also worked on them. Randy was involved in most anything that happened. He did all kind of things and worked with Penske too. He even worked with people outside of GM who were doing prototypes. And, of course, this was when we started dealing with Bob Riley for help with chassis design.

The widebody had a very “chiseled” front end. The IMSA rules didn’t say anything about the fender flares so we shaped them to add downforce and left the back ends open. It used 4-piston calipers and a tube-type roll cage for chassis stiffening. It had a belly pan with a wing built in at the ground-plane; I guess it was an early form of diffuser and would have generated ground effects. IMSA rules didn’t allow it but that was OK because we knew it was going to be a sacrificial element in the rules game anyway. We did get away with the wheel wells being vented through the rear openings and that helped reduce lift. Zora got involved with us about that time and he got Styling involved. The wide fenders they designed swept up to add downforce by using the extra area necessary to cover wider wheels. We also added a lot of body rake to further add to the downforce. Our noses were so low because we dropped the body around the frame; everybody else who didn’t buy our parts tried to do it through the suspension. That wasn’t as good. Even today people try to figure out our horsepower and speed by using frontal area and they just don’t get the right answers. The standard formulae don’t apply; there was so much more to it than that.

Like I said, Bob Riley did some of the initial chassis work. We played with settings over the next two years but, you know, we eventually came back to just about what he had designed for the best dial-in. The cars debuted at Road Atlanta that year in a 10 lap winner take-all event. Our big competition was Bobby Allision’s big block Camaro but we won with a twenty second advantage. We went on to run like a freight train that year, winning our class. We won the season finale with a two lap lead over the second place car.

After our wins in 1974, the Porsches and BMWs adopted our flared and open wheel well style but we still kept winning. We took class again in 1975. A lot of the older cars started to update to the wide body style

588 Posts
You have not shown me anything. Right in my shop we have 1950's European road racing cars with inbord disk rotor IRS suspension. It just continued to get better as the race cars got newer.

Most of these supposed innovators of yours had raced European cars in the late fifties and 60. So they had 10 years of examples of other manufactures. Wings/spoilers/air dams were kind of a late 60 idea. They would go out and run a new car and if it was unstable at high speed then would bend some metal and pop rivet it on.

They all had spies and hiring who they could from other successful race teams. Back then it was the guy with the most money who won. Racing was for rich people who could afford it. It was not the best drivers. Not until big sponsorship and professional drivers did all that change.

I seriously doubt if any of Greenwoods personal designs were ever incorporated over into F1, Indy Car, IMSA racing. His teams collectively built cars

After our wins in 1974, the Porsches and BMWs adopted our flared and open wheel well style but we still kept winning. We took class again in 1975. A lot of the older cars started to update to the wide body style

I would really hope that a 7 or 8 liter motor could pull a 3 liter on the straights

588 Posts
It has gone from Greenwood the genius to a whole advanced design race team with lots of funding.

Every team probably claims that they came up with stuff first. It's doesn't really matter. I still stick with my statement that Greenwood early 70's cars look very amateurishly built in comparison to the Monocoque bodies already in existence 8-10 years previously in open wheel racing with advanced multi link IRS
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