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The SON-28756-15K is the Sonnax aftermarket Powerglide 10 clutch capable high gear drum kit that that is designed to work with a pump that has been machined for a needle bearing thrust washer or if you are planning to use standard OEM style thrust washer. This kit contains the following pieces:
Sonnax 28756-01 – Sonnax aftermarket Powerglide 10 clutch capable high gear drum. This drum can accept both 12 tooth and 24 tooth high gear steels.
Sonnax 28765-05 – Sonnax aftermarket forged aluminum Powerglide high gear piston machined for 10 clutch setup (this piston when used in the Sonnax aftermarket drum can support 10 – 0.060” clutch disks and 10 – 0.060” steels).
Sonnax 28304-2 – Sonnax aftermarket Powerglide tall / solid high gear clutch hub (this clutch hub can support up to a 10-disk high gear setup)
If you don't have the small parts needed to complete the assembly of one of these drums, check out part number SON-28755-SPK – Sonnax Aftermarket Powerglide High Gear Drum Small Parts Kit
This is our go to drum kit when we are building a glide that needs to be capable of supporting 1300 horsepower or more and utilizing an aftermarket pump that is machined for a needle bearing thrust wash (TSI, FTI, Jeg’s, etc. brand pumps). The drum is capable of handling up to a 10-disk clutch setup but can be assembled with less friction disks for lower high-power applications by changing the clutch pack stack.