Stall Matching Starts with Diameter on the Drag Strip

Match converter diameter to engine torque for drag launch RPM using ATI fluid capacity data.

Updated 2026-08-28

Stall matching on the drag strip starts with diameter selection to align converter flash with your engine's torque peak.

ATI charts list fluid needs by size: 13-inch converters take 5 quarts while 8-inch units hold 2 quarts.

Always pre-fill a new converter before install to lock in consistent stall behavior under load.

Stock-pan transmissions like the TH400 hold 6 quarts; aftermarket deep pans demand extra volume.

Verify exact capacity on your build sheet to prevent cavitation or slippage at the tree.

Further reading: https://atiracing.com/tech/

Topics: drag racing · torque converter · stall speed · converter diameter · drag strip

Further reading (manufacturer / industry)