Performance torque converters are generally grouped by size (diameter) and stall speed.

As the diameter of a torque converter
decreases, the stall speed (RPM) goes up. Most of the factory torque converters are 12-13 inch diameter and have a stall speed around 16-
1800 RPM. This promotes excellent fuel economy and drive ability because
they are specifically designed for these purposes.

The problems arise when the modifications are done to the fuel system, camshaft or other engine control systems. Smaller diameter torque converters are needed to provide more slip at idle. This allows engines with a lot of camshaft to idle better. As the torque converter and
horsepower range is moved higher through the RPM range, the smaller torque converters with their higher stall speeds provide maximum torque multiplication where needed. Also the same torque converter will react differently when used behind different engines.

So make your torque converter selection with the help of qualified personnel.

Performance Automatic has endless converter combinations to make your car or truck perform at its utmost potential.

12" CONVERTERS
Performance Automatic has combined a true performance feel and value
price to its 12" torque converters. These units feature modified internals
to provide great off the line starts while retaining remarkable street
ability. Fully balanced and tested these units provide a stall speed 400-
600 RPMs over stock configurations. Great product, even better price!

Features:
• Balanced
• Bolt in
• 400-600 over stock stall
• Direct replacement
• Fully streetable.

11" CONVERTERS
Designed with performance in mind, our 11" torque converters are built to
take the punishment. Fully furnace brazed with extra bearings and balanced
to provide years of dependable service. This famous 11" torque converter is our hottest selling street strip converter. Designed to give approximately 1000 RPM stall over
stock a stock converter, this unit will provide a greater launch and low end power. It is engineered to withstand the punishment of full throttle starts.

Features:
• Balanced
• Furnace brazed
• Needle bearings
• Approximate 25-2800 stall
• Bolt in
• Fully streetable and super launches.

10" CONVERTERS
Performance Automatic has recognized the importance of building an ultra high performance 10" torque converter that is compatible with some street use. Our 10" Pro Launch converter is designed to be used in conjunction with high compression, nitrous
oxide, bigger duration camshafts, stout gear ratios, turbochargers and blower applications.

Stall speeds of 1000 to 2000 over stock converters can be expected. Additional cooling is a must. These converters are just the ticket for high horsepower street application provided you have proper cooling and gear ratio. Just bolt in and hang on!

Features:
• Furnace brazed
• Needle bearings
• Balanced
• Custom designed
• Ballooning plates
• Bolt in
• 3000-4500 RPM stall speeds
• Incredible launch
• Full race construction.

8" and 9" Converters available, please contact us for details.