May 09, 2017
The many options for taking a Powerglide transmission to the next tier of performance can be overwhelming. The charts below identify the five major part groups for which Sonnax offers upgrade options. Strong, durable components for every build level — Contender, Premium and Extreme — guarantee racers never underspec or overpay for unmatched transmission performance.
The input shaft is one of the most highly stressed parts of the transmission. Delivering modern power levels through the transmission is no easy task. Having the right shaft for your power level is the key to avoiding spline twist and shaft breakage at the track.
The stator support is commonly changed when upgrading the Powerglide input shaft. From a basic upgrade to fully optimized extreme build, the heat-treated splines and tough steel construction of Sonnax stator support tubes have the strength to stay in place.
A servo that applies and releases as expected is the key to a reliable transmission. Old-school servos fall far short leading to frustrating problems like band failures, broken shafts and staging issues. Complete servo kits from Sonnax use innovative engineering to solve these longstanding problems.
Mixing parts from various sources can lead to hidden apply problems. A Sonnax drum kit is the best way to make sure the drum, piston and hub work together for trouble-free operation.
Stock planetary gears are time bombs waiting to fail in a racing transmission. When picking a replacement, “one size fits all” is a recipe for disappointment. With four ratios across three performance levels, Sonnax planetary assemblies are the #1 choice for outstanding performance and reliability.
Sonnax offers multiple options in each part category so that you can tailor builds to your customers' needs. The three builds shown here are examples only.
Click here to view all available Powerglide parts.
|Cost||Budget Builds||Improved Durability, |
Cost is a Secondary Concern
|Usage||Quarter Mile||Quarter/Eighth Mile,|
|Power||Up to 1,500 HP||Up to 2,000 HP||Up to 3,000 HP|
|Input Shaft||Extreme Strength,|
Input Shaft, Ringed
Input Shaft, Ringless
|Big Input Shaft Kit|
|Stator Support||Stator Support Shaft Tube|
|Ringless Stator Support |
|Big Input Shaft Stator Tube|
|Servo||Supported Servo Master Kit|
|Smart-Tech® Ratio-Style Servo|
|Smart-Tech® Ratio-Style Servo|
|Drum||Contender Clutch Drum,|
Hub & Piston Kit
Hub & Piston Kit with Bearing
|Smart-Tech® 10-Clutch Drum Kit|
|Planetary||1.80 Contender |
|1.58 Planetary Assembly Kit 28158G-NS|
Ring Gear Stabilizer Kit 28510-S3
You’ve got the big upgrades specced out, now it’s time to ensure other key components are in top shape to help the transmission run efficiently all season long. These Sonnax performance parts are highly recommended in every Powerglide build.
|Pump Bushing||34034T-01||Highly wear-resistant PTFE lining for maximum durability & tight tolerance|
for improved fit
|Oil Pan Kit||28801-S||Lightest pan on the track features seamless construction with 2 qts. extra fluid capacity, requires filter extension kit|
|Filter Extension Kit||28801-S09K||For standard Powerglide valve body & filter, Chrysler filter to Hipster kit also available|
|Band Adjustment Screw Kit||28612-01K|
|Shift Lever Kit||28431-05K||Bolt-together kit works with all common competition shifters;|
click here for one-piece kit
|Output Shaft Support Kit||28080K|
|Drum Small Parts Kit||28755-SPK||Spring retainer, springs, retaining rings, wear plates, lip seals & PTFE bushing|
|.061" Friction - Red Material||S019740A||Other options available|
|12-Tooth, .060" Kolene® Steel||S019701AK||Other options available|
|Extra Wide Band - Red Material||S019961||Kevlar® lining also available|
|Reverse Spring Retainer||28709|
|Slip Yoke||T3-3-6081H||Roller bearing style, 1350 U-joint series, 27-spline|
While Sonnax makes every effort to ensure the accuracy of technical articles at time of publication, we assume no liability for inaccuracies or for information which may become outdated or obsolete over time.