Archive for May, 2009

Mecum Auctions, Corvettes and COPOs

Sunday, May 17th, 2009

I just finished watching the Mecum Auction from Indianapolis this past Friday and Saturday.  Prices still respectable considering the economic conditions.

What I am most impressed about is the price that COPO Camaros and Chevelles command at these auctions.  These cars are powered by the L-72 427 Corvette engine which was introduced for the 1966 model year, and then in 1967 it acquired a triple 2bbl Holley carb setup (tripower) and was re-coded as an L-71.  In 1968 and 1969, a lower profile intake manifold was used to clear the hood of the new C3 Corvette.

If you wanted to lighten the car or improve the handling, the L-88 aluminum heads were available as an option.  The L-71 engine would then become an L-89.  The L-89 was available on Corvettes in 1967 only.  In 1968 and 1969, the L-89 was available on the tripower L-71 427 Corvette, but in the Camaro and Chevelles, the L-89 was available on top of the L-78 396/375 engine and was fueled by a single 780 cfm Holley carb.

I’m going to feature and discuss the COPO Camaros and Chevelles in my companion book to Corvette Racing Legends.  The 1969 COPOs were factory 427 cars, that led to the release of the 1970 LS6 454 SS Chevelle.  I made brief mention of that in my book, but you really have to look hard to find it.  That’s why I’m working on the companion book.

But anyway, there were more Corvettes with the L-71 tripower 427 built in 1969 than all the COPO Camaros and COPO Chevelles combined.  That’s why the COPOs command more money at auctions.  There were over 4000 LS6 Chevelles built in 1970.  That’s a lot.  Must not be too many of them remaining. 

I saw one L-88 Corvette at the auction, but it was a no-sale.  The reserve price was not met.  If you want to see more authentic L-88 Corvettes, take a look here: www.TheL88Corvette.com  That site will always have new photos each year after the Bloomington Gold Corvette Show.

While you are waiting for my new Corvette and COPO book, you will have to settle for my current book at: www.CorvetteRacingLegends.com 

I also have a new forum at: www.TheChevroletCorvette.com  Its for everyone and it contains free classified ads for Corvettes and Corvette parts for all of its members.  Join up now!

Long Live The Corvette!

Pete

Recalling the vintage years of Corvettes

Tuesday, May 5th, 2009

Cinco…… Five…….Nickel……Double Nickel……..55……….speed limit…no…….Sammy Haggar…….Maybe.  Fifty five…….hmmm.  Two Lane Blacktop? ……. That’s better! ….. ‘55 Chevy? …… Now your really warm.  ‘55…. 1955?

1955 was the model year that the legendary small block Chevrolet engine was introduced to the world.  An engine that was considered by many as the “Perfect Engine.”  It could be economical or it could be powerful.  It was extremely flexible and versatile.  It was compact and had what seemed to be unlimited potential. 

This engine would remain in the Chevrolet line for 45 years without any major modifications!  Now that is what I call real visionary thinking! 

Corvettes used this powerplant from 1955 through 1996.  It began as a 265 cubic inch engine and grew to 283 cubic inched for the 1957 model year.  In 1962 it was enlarged to 327 cubic inches and then again to 350 cubic inches in 1967 (Camaro only).  The Corvette received the 350 during the 1969 model year.  The engine would remain basically in that form until 1982, when it received a “cross fire fuel injection system” with very early and simple computer commands.  The more attractive Tuned Port Injection appeared on the 1985 models.  A revised version came in 1992 as the second generation engine, which used a reverse flow cooling system to cool the cylinder heads before cooling the engine block.  This engine appeared in the Corvettes as the LT-1 from 1992-1996 with a high performance LT-4 version using different cylinder head, high lift camshaft, and a unique intake manifold. 

GM SUVs would continue to use a more traditonal form of the small block chevrolet engine with sequential fuel injection until 2000, when the 45 year old engine was phased out by the third generation (GEN III) small block Chevrolet engine.

What is going to power the next 50 years of automobiles?  We will have to wait and see.

Rotary Powered GM Cars?

Monday, May 4th, 2009

GM experimented with rotary engines at one point in time.  The idea was this: less moving parts, lower production costs and lower operating costs.  GM even designed cars around the rotary powered design.  Two experimental Corvettes were built with 2 and 4 rotor engines.  Even the Chevrolet Monza,  Buick Skyhawk, Oldsmobile Starfire & Pontiac Sunbird were all originally designed with the intention of being rotary powered.

But the rotary design which was believed to have been purchased from Wankel (the rotary engine designer), turned out to be a low efficient engine that delivered poor gas mileage during that time at GM (early 70s). 

As a result, GM ended up being two years behind on its engine emission/fuel mileage plan exactly when the first gas crisis of the ’70s hit in 1973. 

Is there still a future for the rotary engine?  Who knows?  Perhaps a small displacement multi-rotor engine with turbocharging assistance could be the answer to lowering costs and improving gas mileage.

Computer controlled fuel injection systems have allowed large Corvette engines to achieve way over 24 MPG on the highway and also deliver 12 second quarter mile time slips before heading home.

These same computer managed fuel injection systems might make a huge difference in the future of GM.

All it would take is a new attitude.

GM problems started back in 1957

Sunday, May 3rd, 2009

From all the research that I’ve done over the past many years, I can conclude that GM’s problems started back in 1957.  That’s right!  The executive board decided to take away the will to compete from the top engineers.

These engineers had been working tremedously hard on designing new, more compact, more efficient engines, and also on smaller lighter weight cars of all sizes.  The GM executive board decided that they would not compete in any  type of motorsport activity based upon the terrible accident that had occured two years earlier at the 24 Hours of Le Mans in France.  This decision was done without even anaylzing and reviewing what had happened.

For those of you who have my book,  look on page 194-195.  That photo from the 1968 24 Hours of Le Mans will tell you why there were so many deaths at that race.  The people are standing on the track, during the event, in the rain, while the cars are racing on the track!!! 

These deaths were the result of irresponsibility and not from improved performance of the racing cars.

Once the GM engineers were told they could not compete with other manufacturers regarding the latest and greatest designs and technologies, the development slowed, and during many model years, it came to a complete stop with no changes in the cars from year to year.

Had these engineers been allowed to compete effectively, lighter weight, more efficient engines and automobiles would have been allowed to be produced, which would have resulted in safer, more fuel efficient automobiles that would have been in a better market position in the 70s.

This is where the cancerous gene entered the corporation.  This cancerous gene would spread from one generation of executives and engineers to the next generation, sometimes mutating into a more damaging gene. 

Corvette Pete

The Original 1963 Corvette Grand Sport

Saturday, May 2nd, 2009

Everyone is excited about the new 2010 Corvette Grand Sport, but no one is talking about the original Corvette Grand Sport which was a lightweight full competition Corvette that was designed and built to challenge the best sports cars in the world, both production and prototype.  You can see more information about the first series of Grand Sports on this page:  http://www.corvettelegends.com/grandspr.htm 

That article is on my original website that I posted back in 1995-1996.  Hope you enjoy it!

Corvette Pete

L-88 Corvette, the ancestor of the C6 Z06 and ZR1

Saturday, May 2nd, 2009

Everyone is talking about the performance of the new C6 ZO6 and the C6 ZR1.  It seems that there is a huge cultural gap when it comes to Corvettes.  I’m not talking about generation gaps here, I’m talking about the new Corvette enthusiasts being unaware of the extreme performance that was (and still is) available in older Corvettes.

The L-88 Corvette was the fastest most powerful Corvette built during the 1967, 1968, and 1969 model years.  Its performance ranked on the top of all Corvettes until the recent release of the new Z06 and Zr1 Corvettes.

Everything you need to know about L-88 Corvettes can be found here:

www.CorvetteRacingLegends.com

www.TheL88Corvette.com

2009 Bloomington Gold Corvette Show

Saturday, May 2nd, 2009

This year’s Bloomington Gold Corvette show is scheduled to be the last show that will feature the indoor Special Collection of rare and extremely valuable Corvettes.  If you are only going to go to one Corvette show this year, it must be this one.  

I posted a page with some suggestions on which Corvettes I would like to see at the show for 2009:

http://www.corvettepete.com/Bloomington_Gold_2009_Corvette_Show.htm

I’m sure the actual display will be slightly different from my list, but it was only a suggestion..

2010 Corvettes?

Saturday, May 2nd, 2009

A new Corvette Grand Sport model has recently been unveiled for the 2010 model year.  With the possibility of bankruptcy looming this summer and cleaner cars being mandated by our new government leaders, can the Corvette as we know and love it, survive?