Test Results:Challenger with 2,000 rpm launch
Baseline: 10-inch converter with a 3,000 flash stall, 5,400 trap rpm.
Vehicle weight 3,640 lbs.
Weather: 65 degrees, 38-percent humidity, 30.21 barometer
| Run | 60-ft | 1/8-mile | 1/4-mile | Notes |
| 1. | 1.81 | 8.16 @ 82.95 | 12.88 @ 104.05 | after one-hour cooldown |
| 2. | 1.82 | 8.16 @ 83.84 | 12.84 @ 104.15 | two minute later hot lap |
| 3. | 1.83 | 8.18 @ 83.79 | 12.88 @ 104.32 | third hot lap |
Challenger w/9 1/2-inch Dynamic converter: 4,200 flash stall, 5,700 trap rpm.
Vehicle weight 3,630 lbs minus 10 lbs (converter weight).
Weather: 66 degrees, 40-percent humidity, 30.18 barometer
| Run | 60-ft | 1/8-mile | 1/4-mile |
| 1. | 1.71 | 7.96 @ 84.58 | 12.64 @ 104.71 |
| 2. | 1.71 | 7.95 @ 84.65 | 12.62 @ 104.73 |
Test Results:
'67 R/T with 3.73 gears and 2,000 rpm launch
Baseline: 10-inch Dynamic converter with a 3,800 flash stall, 6,000 trap rpm, vehicle weight 4,005 lbs.
Weather: 68 degrees, 45-percent humidity, 30.29 barometer
| Run | 60-ft | 1/8-mile | 1/4-mile | Notes |
| 1. | 1.67 | 7.48 @ 91.57 | 11.77 @ 114.42 | best e.t. from previous testing |
Test: 9 1/2-inch Dynamic converter in a rollerized 727. Converter with 4,800 flash stall, 6,300 trap rpm, vehicle weight 4,010 lbs., plus 5 lbs. for roller weight
Weather: 59 degrees, 48-percent humidity, 30.08 barometer
| Run | 60-ft | 1/8-mile | 1/4-mile | Notes |
| 1. | 1.62 | 7.38 @ 91.94 | 11.67 @ 114.04 | good e.t. reduction |
| 2. | 1.62 | 7.37 @ 92.93 | 11.60 @ 115.06 | best e.t. ever |
| 3. | 1.62 | 7.36 @ 92.62 | 11.63 @ 114.45 | hot lap is usually slower in R/T |
| 4. | 1.61 | 7.34 @ 92.32 | 11.62 @ 114.23 | best ever 60-foot time |
| 5. | 1.66 | 7.43 @ 92.18 | 11.70 @ 114.14 | spun on hot lap hurting e.t. |
| 6. | 1.63 | 7.38 @ 92.40 | 11.65 @ 114.05 | some wheel spin 20 feet out |
Conclusion
Converter technology has significantly improved since the musclecar era began. Years ago, higher stall meant more slippage at cruising speeds and less top-end speed at the strip. Today, using a high-quality converter gives you good cruising rpm and the trap speed of a stock converter. Remember, when contemplating the purchase of a new converter, you will get what you pay for. A reputable manufacturer will need a complete spec list on your combo to build the right converter for your car.