The HPP November 2025 PG High Gear Drum Sale Applies Once the Part is Added to the Cart!!!!
The IDP-PG422 is an aftermarket replacement for the OEM Powerglide tall drum, with an unmodified drum to pump thrust washer reaction face. The ID-PG422 can be used with an OEM style thrust pump to drum thrust washer or with a pump that has been machined for a needle bearing thrust washer. This drum can be fitted with up to a six standard thickness clutch pack (0.098” clutch disks with 0.070” steels) or up to an eight-clutch pack using thin clutches and steels (0.060” clutch disks with 0.060” steels).
The drum was designed as a direct replacement for an OEM tall PG drum. The base drums have a lighting groove machined in the front face which decreases static / rotation weight of the drum; these drums weigh 0.5 lbs. less than an OEM tall Powerglide drum. The drums also have four fluid bleed ports machined in them to allow lubrication fluid to evacuate the drum when high gear is engaged. This lubrication fluid modification helps to direct oil towards the band apply surface of the drum, reducing drag between the drum and band while high gear is active.
The drum is supplied with a Teflon coated high gear drum to pump bushing installed.
If you have any questions about the IDP-PG422-BI bare drum with bushing, feel free to contact us.
