This is simply the best 1-piece Powerglide transmission case available. You will not find another casewith a better combination of strength, simplicity, light weight, and unsurpassed quality in casting and machining. Here's why:

• No internal orexternal shield required because the case itself is SFI4.1 Certified*.
• No flexplate shield required because the bellhousing is SFI30.1 Certified*.
• Uses all stock and aftermarket internals; no oddball parts.
• Bellhousing is part of the case just like thePowerglide so all machining alignment remains perfect.
• Made by a permanent mold process from heat treated aircraft grade aluminum. This process is stronger, more ductile, and more accurate than competitors' brittle sand castings.
• Oil pan flanges are thickened to stiffen case. Beefed up oil pump area prevents front case distortion under high horsepower. Minimizes flexing which causes gear misalignmentand breakage. This case does not leak!
• Oil pump mounting bolt holes heli coiled to prevent thread failures.
• Patented adjustable transbrake release.Adjustment bolt varies both the quickness and the rate of release which varies the reaction time and the hit of the tires.
• Predrilled for double dump transbrake.
• Redesignedoil passages radically improves release time of the transbrake and allows instant application.
• Patented reverse piston bleed hole vents air from piston area andincreases transbrake consistency.
• No need for internal or external shields or bottom straps.
• Each case is thoroughly inspected at every step of its production. You can be assured that you will not have the problems associated with porosity and misalignment from poor castings or inferior machiningas with other cases.
• Special high speed caged roller bearing replaces the OEM bushing to enhance long life and ensure the smoothest operation.
• A perfect match to aftermarket roller bearing governor support housings or roller bearing shorty housings.
• The bearing bore is machined at the same time as the hub and reverse piston bore ensuring perfect alignment within one thousandth of an inch.
• Retains both 30.1 and 4.1 SFI certifications.