spragless on the street?

Old 03-11-2008, 02:15 PM
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Location: Florida
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Short stop and go in town driving isn't as much an issue, on the highway/cruising with it locked is where it will build heat. Also bad mileage. There are good sprags available for high HP street/strip cars.
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Old 03-13-2008, 07:45 PM
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Default Re: Just went through this myself

Originally Posted by lmccoll
A spragless converter can stand more horsepower, but is not to be driven on the street any at all. If you drive more than 1/2 mile to 1 mile, it will overheat the transmission in a hurry. The sprag is a weak link in the converter. The sprag allows some oil to bypass in the converter and reduces heat a lot. A well built Sprag converter depending on brand and type can be rated as high as around 600 hp. The cheaper (less than $200) converters might handle 400 to 450 hp, a 600 horsepower converter is going to cost twice that usually.

If you are going more than about 600 horsepower, you will need a spragless, but don't drive it down the road and back.
Can it really over heat that quick?1/2 mile?Imean by the time you stage,run down the 1/4 and then find your way back to your spot...you've driven 1/2 mile or more.Not trying to dispute,just honestly curious
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Old 03-17-2008, 10:30 AM
Join Date: Apr 2005
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call lenny at ultimate converter concepts hes out of mass. 203-874-2100 we use him for all of our customers and in house projects he will set you straight with what your gona want.
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