Was this really the second fastest Callaway built, after the Callaway Sledgehammer?

Discussion of Corvette based Callaway Cars including: 1987-1991 RPO B2K Callaway Twin Turbo Corvettes (C4); Callaway SuperNatural Corvettes (CL-1/CR-1); Callaway C12; Supercharged Corvettes; Callaway C16; 6th Generation Callaway Corvettes (SC560, SC580, SC606, SC616, SC620, SC652); 7th Generation Callaway Corvettes (SC627/SC757); NEW Callaway C8 Corvettes - and more!
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*89x2*
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Was this really the second fastest Callaway built, after the Callaway Sledgehammer?

Post by *89x2* »

Was this the second fasted Callaway Corvette built? :wtf
RPO B2K Twin Turbo option package. Prototype front mounted Charge Air Intercooler. This Unique Callaway, serial 1989 010 is believed to be the second fastest Callaway ever. The fastest was the record breaking 254mph Sledgehammer. This Callaway Corvette was tested by Callaway at 215 mph on a closed road in Old Lyme Connecticut.

Power: 584bhp @ 5400 rpm
Torque: 647 lb-ft @ 3500 rpm
Maximum boost: 56" Hg absolute
0-60 mph: 4.1 seconds
¼ mile: 11.87 seconds @ 127 mph
Top speed: 215 mph
Above acceleration figures are with street tyres.

Callaway Twin Turbo Engine
Twin Garrett turbochargers with integral wastegates
Twin front mounted oversized ram-air Spearco charge air coolers
Special dual inlet air induction system with high flow K&N; air filters
Special 3" dia. Free flow Turbo exhaust system with crossover for export
Stainless steel 3" diameter inlet 5" can Supertrapp mufflers
Heavy duty cooling system with aluminium Griffin racing radiator
Alfa-laval 10 plate oil to water engine oil cooler
Accel/dfi engine management system with Callaway calibration
Racing Electronic Services accel/DFI-GM E.C.U. adaptor system
Bosch injectors, 51.24 PSI at 60 lbs of fuel pressure
Callaway prototype hood with charge-cooler air extractor openings
Callaway prototype Ram-Air high flow capacity nose
Callaway carbon fiber "twist" air inlet
Callaway carbon fiber charge cooler extractor ducts
L-98 engine block, 4 bolt main caps, splayed-bolt style
Michigan engine bearings
Forged gas nitrided crankshaft, 60Rc journal hardness
Proprietary cosworth forged pistons, .006" O/S
Plasma moly ring package
Carillo connecting rods, 5.7 centers, matched and balanced
Experimental short runner fuel injection inlet manifold
High volume oil pump
Hydraulic roller lifters
Specially hardened distributor drive gear
Dry sump pump for turbo oil scavenge
Oversize stainless steel inlet (2.020) and exhaust (1.600) valves
Corvette L-98 cylinder heads killer ports, gas flowed and decked
Dymag 17.0 X 9.5" wheels
Goodyear P275/40 zr 17 tires
Callaway fuel and manufacturer's plaques
Refinish intake manifold/tuned port injection with black wrinkle finish

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BIGJOHN
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Re: Was this really the second fastest Callaway built, after the Callaway Sledgehammer?

Post by BIGJOHN »

There are so many Callaway’s built after the 1989 cars!
The twin turbo ZR-1’s!
The 585 hp 550 cars!
The supercharged 606 to 757 hp cars!
Is there anyone that has made a run above 200 miles per hour?
Who knows!
kingforward
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Re: Was this really the second fastest Callaway built, after the Callaway Sledgehammer?

Post by kingforward »

“215 mph on a closed road in Old Lyme, CT” :bs
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SurfnSun
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Re: Was this really the second fastest Callaway built, after the Callaway Sledgehammer?

Post by SurfnSun »

kingforward wrote: Tue Jul 05, 2022 8:22 pm “215 mph on a closed road in Old Lyme, CT” :bs

I agree completely. No way.
kingforward
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Re: Was this really the second fastest Callaway built, after the Callaway Sledgehammer?

Post by kingforward »

The Callaway C12R was the race version of its C12 street car built on a Corvette chassis.
The car below did 193 MPH on the Mulsanne Straight at LeMans,
3CF45C7E-B909-4512-B207-FFB11F38C805.jpeg
Any other Callaway top speed comparisons out there?
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SurfnSun
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Re: Was this really the second fastest Callaway built, after the Callaway Sledgehammer?

Post by SurfnSun »

I mean...I know a guy who took an 88 b2k to ~172 but that was nowhere near the top speed according to him.
kingforward
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Re: Was this really the second fastest Callaway built, after the Callaway Sledgehammer?

Post by kingforward »

:beer that guy is my hero. :thumbs (wink wink)
That’s faster than I’ve ever gone in a Callaway.
Best for me was ~165 mph down the Daytona Speedway straightway in a C7 GT3-R

Who else has run a Callaway fast on a street or strip?
*89x2*
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Re: Was this really the second fastest Callaway built, after the Callaway Sledgehammer?

Post by *89x2* »

:wtf
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1988Callaway#16
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Re: Was this really the second fastest Callaway built, after the Callaway Sledgehammer?

Post by 1988Callaway#16 »

In the YouTube movie “The Gathering of Eagles 1987”a stock looking Callaway did 194mph with a GTO body kit with the duck bill spoiler removed. Then with a modified front air dam, a mean sounding Callaway when 231.1mph to best all of the cars there! Good stuff!
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