1988 Callaway Twin Turbo Corvette

1988 Callaway Twin Turbo Corvette

From The Corvette Black Book by Michael Antonick:  "RPO B2K generated a specific equipment build with standard engines at the Corvette assembly plant. The cars were then sent to Callaway's Connecticut shop for installation of Callaway-modified twin-turbo engines."

Production Numbers
RPO Description Price< Production
1YY07 Base Coupe $31,545 16,663
1YY67 Base Convertible $36,785 9,749
B2K Callaway Twin Turbo $26,995 69
NA B2K Coupe w/ Automatic Transmission NA 10
NA B2K Convertible w/ Automatic Transmission NA 15

The following information comes from Car and Driver, May, 1989:

Model: Callaway Corvette Twin Turbo Aerobody
Vehicle Type: front engine, rear-wheel drive, two passenger, two door coupe
Price As Tested: $71,361
Options: base Chevrolet Corvette, $31,545; Callaway conversion, $26,995; Callaway Aerobody, $6500; FX3 adjustable suspension, $1695; Corvette preferred-equipment group #1 (consists of automatic air conditioning, sound system and power driver's seat), $1163; leather upholstery, $1025; bronze colored liftoff roof panel, $615; Z61 performance-handling package, $575; power passenger's seat, $240; illuminated driver's-side visor mirror, $58; freight, $950
Standard accessories: power steering, windows and locks, A/C, cruise control, tilt steering, rear defroster
Sound system: Delco-GM/Bose AM/FM-stereo radio/cassette, 4 speakers
Type: turbocharged and intercooled V-8, iron block and aluminum heads
Bore/Stroke: 4.00 x 3.48 in., 101.6 x 88.4 mm
Displacement: 5,733cc, 350 cu. in.
Compression: 7.5:1
Engine-control system: Callaway/Chevrolet electronic with port fuel injection
Emissions controls: 3-way catalytic converter, feedback fuel-air-ratio control, EGR, auxilliary air pump
Turbochargers: 2 Rotomaster T04 Compac
Waste gate: integral
Maximum boost pressure: 10.8 psi
Valve gear: pushrods, hydraulic lifters
Horsepower: 382 bhp @ 4,250 rpm
Torque: 562 lbs. ft. @ 2,500 rpm
Redline: 5,500 rpm
Type: 6-speed
Final-drive ratio: 3.54:1 limited slip
Gear Ratio MPH/1000 rpm Max test speed
1st 2.68 7.8 43 mph (5500 rpm)
2nd 1.80 11.6 64 mph (5500 rpm)
3rd 1.31 15.9 87 mph (5500 rpm)
4th 1.00 20.6 115 mph (5500 rpm)
5th 0.75 27.8 153 mph (5500 rpm)
6th 0.50 41.6 170 mph (4100 rpm)
Dimensions and Capacities
Wheelbase: 96.2 in.
Track, front/rear: 59.6/60.4 in.
Length: 179.0 in.
Width: 71.0 in.
Height: 46.7 in.
Frontal area: 19.4 sq. ft.
Ground Clearance: 4.3 in.
Curb weight: 3,500 lbs.
Weight dist., % f/r: 51/49
Fuel capacity: 20.0 gal.
Oil capacity: 6.0 qt.
Water capacity: 16.7 qt.
Type: full-length frame integral with body
Body material: fiberglass reinforced plastic
Steering, Suspension, Brakes
Suspension: F:  ind., unequal-length control arms, plastic leaf spring, 3-position cockpit-adjustable shock absorbers, anti-roll bar
R:  ind., fixed-length half-shafts, 2 lateral links and 2 trailing links per side, plastic leaf spring, 3-position cockpit-adjustable shock absorbers, anti-roll bar
Steering type: rack and pinion, power assisted
Turns, lock to lock: 2.0
Turning circle: 40.0 ft.
Brakes: F:  12.9 x 1.1 in. vented discs with vacuum assisted ABS
R:  11.9 x 0.8 in. vented discs with vacuum assisted ABS
Wheels: Dymag 5-spoke, cast magnesium alloy, 17 x 9.5 in.
Tires: Goodyear Eagle ZR40, P275/40ZR-17
Test inflation pressures, F/R: 40/40 psi

Manufacturer's Test Ratings
0-60 mph: 4.4 sec.
0-100: 10.5 sec.
1/4 mile: 12.9 sec. @ 111 mph
Top speed: 191 mph
Fuel Economy EPA city driving:  14 mpg
EPA highway driving:  25 mpg
C/D observed fuel economy:  17 mpg