transmission not shifting soon enough - Team Camaro Tech
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post #1 of 2 (permalink) Old May 24th, 02, 08:03 AM Thread Starter
Join Date: May 2002
Location: rochester
Posts: 1
Hi, I just installed a 350 from an '83 suburban in my '73 camaro that originally had a 307. The auto transmission is the camaro's original, but I put in a bigger torque converter. The problem I'm having is the tranny is not shifting soon enough, I can't get it to shift into Drive before 55 mph. I'm new at working on engines, but I'm learning, I've heard it may be either the vaccum modulator or the kick down lever. What does the vaccum modulator hose go into? The carb? If it sounds like the kick down lever, do I adjust it forward or back? Please help, I'm dying to fix this after working on the engine all winter!!!

TJ D., 1973 camaro, 350
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post #2 of 2 (permalink) Old May 24th, 02, 11:22 AM
Senior Tech
Join Date: Feb 2002
Location: Williamstown,PA
Posts: 500
The vacuum modulator hose usually connects to a fitting on the intake behind the carb. If you have an aftermarket intake you might not have this fitting anymore. You need to connect it to a good source that has vacuum at all times when the car is running. They make adjustable modulators so you can taylor it to your needs. The kickdown cable should have two bolts holding it to a bracket. Loosening the bolts and sliding it toward the front of the car will require more throttle to downshift. Sliding it back requires less throttle. Hope this was helpful.

'69 RS Camaro
355 5-speed 4.11
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