Fact check for magazine article

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sven-labil
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Fact check for magazine article

Post by sven-labil » Tue Jan 07, 2020 3:30 pm

I’m writing an article about #132 for Club Corvette Swedens magazine and would like to make sure that I’ve got the specifications for an -87 and some other stuff correct:

497 RPO B2K Corvettes were built, distribution per year 184, 124, 69, 58 and 62.

345 hp at 4000 rpm and 465 Ib-ft at 2800

0-60 mph in 4.7 s, quarter mile in 13.2, top speed 178 mph

10 psi of boost from 2000 rpm

Forged Cosworth 7.5:1 pistons and forged GM connecting rods but who made the crankshaft? I think I read Callies somewhere…

All Callaway Twin Turbo Corvettes have the options KC4 Engine Oil Cooler and V01 Heavy-Duty Radiator.

I also read somewhere that the heads received a three angle valve job.

I found a Xerox copy of an article from April 1988 in a magazine called Autotech stating that the engines were balanced, blueprinted and assembled by Ed Lanier Racing Engines:
IMG_2888.JPG
IMG_2889.JPG
Does that seem correct?
Ola Sjölander
1987 Callaway Twin Turbo #132

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Jeroenvgfn
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Re: Fact check for magazine article

Post by Jeroenvgfn » Tue Jan 07, 2020 5:43 pm

Hi Ola, I cannot help you with the statistics but I would love to see a copy of the magazine when finished :beer
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BIGJOHN
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Re: Fact check for magazine article

Post by BIGJOHN » Tue Jan 07, 2020 6:06 pm

As Callaway continued to to build the B2K Corvettes they made improvements that increased horsepower and torque.
Maybe Callaway Chris can help you.

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sven-labil
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Re: Fact check for magazine article

Post by sven-labil » Wed Jan 08, 2020 3:01 am

Jeroenvgfn wrote:
Tue Jan 07, 2020 5:43 pm
Hi Ola, I cannot help you with the statistics but I would love to see a copy of the magazine when finished :beer
I think that can be arranged, it will be in Swedish though ;)
Ola Sjölander
1987 Callaway Twin Turbo #132

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sven-labil
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Re: Fact check for magazine article

Post by sven-labil » Wed Jan 08, 2020 3:18 am

BIGJOHN wrote:
Tue Jan 07, 2020 6:06 pm
As Callaway continued to to build the B2K Corvettes they made improvements that increased horsepower and torque.
Yes, I know. I plan to limit this article to the history of my car but it could be good to include some information about what changed over the years. (Wonderbar versions, Rotomasters, intercooler ducts etc.) I'll post a list of the significant changes I know of for review.
Ola Sjölander
1987 Callaway Twin Turbo #132

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Re: Fact check for magazine article

Post by Callaway Chris » Wed Jan 08, 2020 3:31 pm

Good to see this topic. Thanks for drafting.

I used to update the Callaway Cars Wikipedia site, but Wikipedia is now overrun by snobs who want to "discuss" or "Chat" about "facts". They have no first hand, or probably not even third hand info on Callaway, but what I wrote before is mostly still there. If you go to Wikipedia, you will see all you are after, including production numbers. For example, after 87-184 was built, 4 more were converted.

In 1989, there was a car #69, but no #68. So production was 68 units that year.

Horsepower and torque numbers climbed as things evolved, like Big John mentioned. If I can help review your draft, I'd be glad to read. :hi

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SurfnSun
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Re: Fact check for magazine article

Post by SurfnSun » Wed Jan 08, 2020 6:34 pm

I don't recall ever hearing about the heads having any other work done than maybe being decked and getting a stiffer valve spring.

The 100+ heads were fully ported 113s.

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sven-labil
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Re: Fact check for magazine article

Post by sven-labil » Sat Jan 11, 2020 9:54 am

Here are the updates I think were made:
1988 - Larger turbos from Rotomaster that draws air through the frame rail in front of the engine from an air filter positioned where the expansion tank normally sits. Callaway calls the modified frame rail Wonderbar. The hood openings for the intercooler air ducts removed and air drawn in front of the radiator instead. Light 9,5x17 Dymag magnesium wheels became standard. (They have offset 46 to also fit last years cars.)
1989 - Callaway AeroBody, pretty much the same body panels as the Callaway Sledgehammer but with a different rear end and without air vents over the front wheels, can be bought as an accessory for $6500.
1991- Larger Wonderbar for improved airflow. New air intakes on the hood that leads air straight down to the intercoolers.
Ola Sjölander
1987 Callaway Twin Turbo #132

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sven-labil
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Re: Fact check for magazine article

Post by sven-labil » Sat Jan 11, 2020 9:58 am

And some statistics in Swedish:
tabell.jpg
Ola Sjölander
1987 Callaway Twin Turbo #132

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SurfnSun
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Re: Fact check for magazine article

Post by SurfnSun » Sat Jan 11, 2020 12:55 pm

I would call the 89 Aerobody, the production version of the product. The Sledgehammer front bumper was redesigned for production and the rear bumper was finished.

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