Callaway
Twin Turbo Corvette Performance
Yes, the Callaway Twin Turbo Corvette has
great amounts of power. And even greater amounts of Torque!
This is due to the Forced Induction effects of turbo-charging. Most normally aspirated power plants have a very close relationship between Horsepower and Torque. Forced Induction, when done well, yields about 1.5 times the amount of Torque to Horsepower. Of course, it does not behave like a normally aspirated car. When that boost comes on Hold Hard!!
Below you will find a graphical representation of the Dyno Sheet provided to me by Callaway Cars of my car after its upgrade to 450HP in March of 1993.
Thanks to Stan and Dave for providing me the following information for our amazement:
CALLAWAY CORVETTE
PERFORMANCE DATA:
Notes:
When comparing 60mph to 100 mph runs straight out, you will see that in the 0-100mph that the same segment is faster. The reason for this is that the momentum of the moving vehicle enhances the required time to cover that "time speed" at a faster rate.
All times are averaged out in both directions with a minimum of six runs per car. Experienced drivers are used. No professional behind the wheel. No power shifting! Many years of testing contains more than ten cars of each model and setup. Only blacktop surfaces are used. Weather test conditions must meet the following criteria: 60 to 70 degrees & 35% to 50% humidity.
All cars are factory stock unless noted in Spec categories. Equipment used: Vericom 2000 Pro Performance (real time systems). Driver weight between 180-200lbs. Half tank of gas and tires at normal inflation levels. No (slicks) special tires are ever used.
This is due to the Forced Induction effects of turbo-charging. Most normally aspirated power plants have a very close relationship between Horsepower and Torque. Forced Induction, when done well, yields about 1.5 times the amount of Torque to Horsepower. Of course, it does not behave like a normally aspirated car. When that boost comes on Hold Hard!!
Below you will find a graphical representation of the Dyno Sheet provided to me by Callaway Cars of my car after its upgrade to 450HP in March of 1993.
| RPM | HP | Torque |
| 2000 | 137 | 361 |
| 2250 | 162 | 377 |
| 2500 | 199 | 419 |
| 2750 | 299 | 571 |
| 3000 | 362 | 634 |
| 3250 | 391 | 631 |
| 3500 | 410 | 616 |
| 3750 | 423 | 592 |
| 4000 | 435 | 572 |
| 4250 | 457 | 564 |
| 4500 | 473 | 552 |
| 4750 | 465 | 515 |
| 5000 | 455 | 478 |
Thanks to Stan and Dave for providing me the following information for our amazement:
| Year | Model - Specs including Horsepower & Rear Axle | 0-60 MPH | 60-100 MPH | 0-100 MPH |
| 1987 | Callaway Twin Turbo Coupe - 3.07 | 4.6 sec | 5.7 sec | 9.9 sec |
| 1987 | Callaway Twin Turbo Convertible - 3.07 | 4.7 sec | 5.7 sec | 10.1 sec |
| 1987 | Callaway Twin Turbo Coupe - 3.07 - Aerobody | 4.5 sec | 5.6 sec | 9.8 sec |
| 1987 | Callaway Twin Turbo Coupe - 3.73 | 4.3 sec | 5.4 sec | 9.5 sec |
| 1988 | Callaway Twin Turbo 4spd 435HP Coupe - 3.07 | 4.5 sec | 5.2 sec | 9.4 sec |
| 1988 | Callaway Twin Turbo 4spd 382HP Conv - 3.07 | 4.6 sec | 5.4 sec | 9.7 sec |
| 1988 | Callaway Twin Turbo 4spd 382HP Coupe - 3.73 | 4.4 sec | 5.0 sec | 9.1 sec |
| 1988 | Callaway Twin Turbo SE 4spd 530HP Conv - 3.73 | 4.0 sec | 3.8 sec | 7.5 sec |
| 1988 | Callaway Twin Turbo SE 4spd 620HP Conv - 3.73 | 3.8 sec | 3.4 sec | 7.0 sec |
| 1988 | Callaway Twin Turbo Sledgehammer 880HP Coupe | 3.1 sec | 3.0 sec | 6.1 sec |
| 1989 | Callaway Twin Turbo 6spd 382HP Coupe - 3.33 | 4.6 sec | 5.5 sec | 9.8 sec |
| 1989 | Callaway Twin Turbo 6spd 382HP Conv - 3.33 | 4.7 sec | 5.6 sec | 9.9 sec |
| 1989 | Callaway Twin Turbo 6spd 382HP Coupe - 3.33 Aero | 4.6 sec | 5.4 sec | 9.8 sec |
| 1989 | Callaway Twin Turbo 6spd 382HP Coupe - 3.54 | 4.6 sec | 5.5 sec | 9.9 sec |
| 1989 | Callaway Twin Turbo 6spd 382HP Coupe - 3.54 Aero | 4.5 sec | 5.4 sec | 9.7 sec |
| 1990 | Callaway Twin Turbo 6spd 403HP Coupe - 3.45 | 4.5 sec | 5.5 sec | 9.8 sec |
| 1990 | Callaway Twin Turbo 6spd 403HP Coupe - 3.45 Aero | 4.5 sec | 5.4 sec | 9.7 sec |
| 1990 | Callaway Twin Turbo 6spd 403HP Conv - 3.45 | 4.6 sec | 5.6 sec | 9.9 sec |
| 1991 | Callaway Twin Turbo 6spd 403HP - 3.45 | 4.5 sec | 5.6 sec | 9.8 sec |
| 1991 | Callaway Twin Turbo 6spd 403HP - 3.45 Aero | 4.5 sec | 5.4 sec | 9.8 sec |
| 1991 | Callaway Twin Turbo Speedster 6spd 450HP - 3.45 | 4.4 sec | 5.1 sec | 9.2 sec |
| 1992 | Callaway SuperNatural 383 - 435HP - 3.45 | 4.5 sec | 5.6 sec | 9.7 sec |
| 1994 | Callaway SuperNatural 383 - 440HP - 3.45 | 4.5 sec | 5.6 sec | 9.7 sec |
| 1995 | Callaway SuperNatural 383 - 435HP - 3.45 | 4.5 sec | 5.6 sec | 9.7 sec |
| 1995 | Callaway SuperNatural 383 - 435HP - Aero | 4.4 sec | 5.4 sec | 9.6 sec |
| 1996 | Callaway SuperNatural 383 - 440HP - LT1/LT4 | 4.4 sec | 5.3 sec | 9.4 sec |
| 1997 | Callaway SuperNatural 350 - 435HP - LS1 | 4.3 sec | 5.1 sec | 9.1 sec |
| 1993 | ZR1 Callaway SuperNatural - 6spd - 490HP - 3.45 | 4.4 sec | 5.2 sec | 9.4 sec |
| 1993 | ZR1 Callaway SuperNatural - 6spd - 490HP - 3.45 - Aero | 4.3 sec | 5.0 sec | 9.1 sec |
| 1994 | ZR1 Callaway SuperNatural - 6spd - 490HP - 3.45 - Aero | 4.3 sec | 4.8 sec | 8.9 sec |
| 1994 | ZR1 Callaway SuperNatural Twin Turbo - 782HP - 3.92 | 3.2 sec | 3.1 sec | 6.1 sec |
| 1994 | ZR1 Callaway SuperNatural - 6spd - 490HP - 4.10 - Aero | 4.1 sec | 4.5 sec | 8.4 sec |
Notes:
When comparing 60mph to 100 mph runs straight out, you will see that in the 0-100mph that the same segment is faster. The reason for this is that the momentum of the moving vehicle enhances the required time to cover that "time speed" at a faster rate.
All times are averaged out in both directions with a minimum of six runs per car. Experienced drivers are used. No professional behind the wheel. No power shifting! Many years of testing contains more than ten cars of each model and setup. Only blacktop surfaces are used. Weather test conditions must meet the following criteria: 60 to 70 degrees & 35% to 50% humidity.
All cars are factory stock unless noted in Spec categories. Equipment used: Vericom 2000 Pro Performance (real time systems). Driver weight between 180-200lbs. Half tank of gas and tires at normal inflation levels. No (slicks) special tires are ever used.