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

Run60-ft1/8-mile1/4-mileNotes
1.1.818.16 @ 82.9512.88 @ 104.05after one-hour cooldown
2.1.828.16 @ 83.8412.84 @ 104.15two minute later hot lap
3.1.838.18 @ 83.7912.88 @ 104.32third 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

Run60-ft1/8-mile1/4-mile
1.1.717.96 @ 84.5812.64 @ 104.71
2.1.717.95 @ 84.6512.62 @ 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

Run60-ft1/8-mile1/4-mileNotes
1.1.677.48 @ 91.5711.77 @ 114.42best 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

Run60-ft1/8-mile1/4-mileNotes
1.1.627.38 @ 91.9411.67 @ 114.04good e.t. reduction
2.1.627.37 @ 92.9311.60 @ 115.06best e.t. ever
3.1.627.36 @ 92.6211.63 @ 114.45hot lap is usually slower in R/T
4.1.617.34 @ 92.3211.62 @ 114.23best ever 60-foot time
5.1.667.43 @ 92.1811.70 @ 114.14spun on hot lap hurting e.t.
6.1.637.38 @ 92.4011.65 @ 114.05some 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.

SOURCE
Schumacher Creative Services
Seattle
WA
2-06/-364-7151
engine-swaps.com
Red Line Synthetic Oil Corporation
7-07/-745-6100
redlineoil.com
Summit Racing Equipment
P.O. Box 909
Akron
OH  44309
Dynamic Converters/Pro-Formance Transmissions
8-77/-846-5876
dynamicconverters.com