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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Oct 2005 Posts: 408 Shop Shark | | Shop Shark Joined: Oct 2005 Posts: 408 | 1977 chevy stepside. I swapped out the 305 and original 400th trans and put in a 350 350th trans. ( BE CLEAR I HAVE NEVER DONE THIS MUCH BY MYSELF BEFORE) engine runs great trans shifts smooth but wont gear down. I put on an edlebrock performer intake and a holley 900 4 bbl carb. I had to add a bracket for the throttle cable and trans cable that came with the carb kit. do i need to adjust the trans cable or am i missing something?? any and all suggestuons welcome. Paul | | | | | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | The cable should be pulled all the way out when the throttle is wide open. That's the adjustment for the kick down cable. Also be sure you have a vacuum source for the modulator,
Scott | | | | | Joined: Feb 2004 Posts: 29,780 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,780 | The only function of the cable on a 350 is for kickdown. Just as the throttle reaches wide open, the cable should reach its full travel. Shift points on a 350 are controlled by the modulator and the governor pressure, which is generated by the speed of the driveshaft. Adjust the kickdown cable to be full forward at wide open throttle and it should function. If it doesn't, there is an internal problem with the kickdown band and/or the servo that applies it. That's overhaul territory!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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