Yank Converters LLC. manufactures torque converters for the Buick Grand National, Buick GNX and Chevrolet Impala SS. Whether you have the 4L80E, 4L85E, 200R4, 700R4 or 4L60E Yank has you covered with their top of the line US made torque converters. All of our converters come with a 3 year warranty. When you buy from Yank you can rest assured you are getting the absolute best in the business!

Our LT Power Adder Series is specifically designed for power adder Buick Grand Nationals, GNX or Impala SS with NOS, small turbo, or supercharger. The Pro Thruster Series is the ultimate N/A performance torque converter that loves big cams and RPM. The Pro Yank Series is our top of the line 10.5" billet converter that can handle large amounts of NOS and boost. The Supercharger Series is the perfect match to your positive displacement Buick Grand National, GNX or Impala SS. Finally, our SS Series torque converters are engineered to be the ultimate street/strip converter with a 9.5" solid billet cover and a solid billet lockup clutch.