spragless on the street?
03-11-2008, 02:15 PM
#11
Senior Member
RACING JUNKIE
Join Date: Jul 2007
Location: Florida
Posts: 635
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.
03-13-2008, 07:45 PM
#12
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Join Date: Sep 2007
Location: Montvale, VA
Posts: 1,431
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.
If you are going more than about 600 horsepower, you will need a spragless, but don't drive it down the road and back.
