Aug 10,
2021
Prevent pressure drops in high RPM GM TH400 and Powerglide racing applications with this new, specially calibrated high RPM checkball capsule from Sonnax.
Testing has shown that OEM checkballs in listed racing applications are unreliable above 5,500 rpm. At higher speeds the checkballs can unseat, resulting in drop of line pressure or converter pressure. There are many variables that effect che...