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| Mega Monster transmission uses a billet Corvette servo to apply second gear and hold it with a lot more authority than the stock unit (above and left). This servo is stronger and its deeper recess allows more fluid compression and surface area. | |
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| Late-model 4L65 transmissions, such as the one in the Escalades prior to ‘08, are equipped with 5-pin planetary gears sets (left)--instead of the more common 4-pin type--that distribute torque load more evenly to more points. Hop-up tip: Since the gear ratios in the 4L60/65 are the same as those in the 700R4, the 5-pin planetary units may also be used in those older transmissions. | Parts arranged at the top compose the OE electronic pulse control (EPC). Under a boosted application, the EPC is unable to “keep up” with the accelerated pace and unable to control the transmission, so it is replaced with a Trans-Go solenoid PN 46-MOD (bottom). Updated versions (circa 2000-on) have a mesh screen to keep out the big pieces. |
The Trans-Go solenoid works with this little collection of solenoids and pressure switches. The two far left units are the 1-2 and 3-4 gear shifters; the two bottom units are the 3-2 gear solenoids, pulse-width modulated, to improve the 3-2 downshift. The solenoid also regulates the release of the 3-4 clutch and the 2-3 band apply. The black plate is the transmission fluid temperature sensor that helps to control the torque converter clutch apply and shift quality.