 The 1/4-20 nut and bolt were...  The 1/4-20 nut and bolt were left loose enough to adjust the ratio arm to let the TPS cable end rest at idle with 50 percent travel before the throttle shaft, and 50 percent after the throttle shaft with the gas pedal floored. |  Because this is such a critical...  Because this is such a critical adjustment (the TPS setting determines line pressure; an improper setting can burn up the transmission), we have included another angle to illustrate the center of the throttle shaft with the ratio arm at the idle position. Notice we used the red Sharpie to mark our 50 percent points. |  The Compushift Display Programmer...  The Compushift Display Programmer is capable of monitoring rpm, mph, line voltage, transmission temperature, acceleration, and deceleration, as well as allowing the driver to adjust line pressure, shift points, and at how many mph the torque converter locks up. |
 With Gear Star's optional...  With Gear Star's optional Compushift Display Programmer, a digital readout indicates throttle position. This takes all the guesswork out of adjusting the TPS, hence the worry of frying the 4L60E is virtually nill. |  The cable-pull TPS was a direct-bolt-in...  The cable-pull TPS was a direct-bolt-in and mounted easily to the '79's inside framerail. |  We used a Hayden transmission...  We used a Hayden transmission cooler in conjunction with the stock cooler built in the radiator to dissipate excess heat from the the Gear Star 4L60E. Notice how clean the Hayden cooler spliced into the stock transmission lines. A Lokar dipstick was used to replace the stock dipstick rendered unusable by the 4L60E transmission swap. |