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
|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
|1.||1.71||7.96 @ 84.58||12.64 @ 104.71|
|2.||1.71||7.95 @ 84.65||12.62 @ 104.73|
'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
|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
|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|
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.