TH350 drum with 36 element upgraded intermediate sprag with more than double the strength of a factory unit. Built with a thicker hardened outer race, extra wide bushing and a heavy duty 36 element sprag. Great for high horsepower engines in heavy cars. This was the #1 weak point on TH350 transmissions.
A re-furbished drum that has had a hardened inner and outer race added to it. This drum utilizes one of the LARGEST intermediate sprags available today. It boasts a HUGE 36 element sprag assembly.