C4 shifting

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Oct 15, 2011 | 07:18 PM

tiger_698

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From: Kansas City, MO

C4 shifting

I have a 302 with a C4. The two came from different vehicles, but they fit together great. My problem is that it shifts based off what speed I am going instead of what the RPMs are running at. Is there a way to fix this problem. (It gets kind of annoying if I'm going a constant 38 and it keeps up shifting and down shifting.)

Oct 16, 2011 | 06:04 AM

HemiEater

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do you have the modulator hooked to manifold vacuum and do you have the down shift rod hooked to the carburetor... it sounds to me like you don't have the rod hooked up...

Oct 17, 2011 | 05:28 PM

tiger_698

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From: Kansas City, MO

I have both of them hooked up. The problem isn't if I give it a lot of gas. It definitely down shifts if I do. The problem is when I am going a constant speed. Usually around 38 it shifts back and forth between gears. If I slow down to 35 it will stay in the lower gear. If speed up to 40 then it will stay in the higher gear.

Oct 17, 2011 | 05:53 PM

HemiEater

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Make sure the rod that goes down to the transmission is pulled all the way forward..

Oct 18, 2011 | 05:52 PM

tiger_698

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From: Kansas City, MO

I climbed under to take a look and it is all the way forward. When under there looking at it I noticed another line that is not hooked up to anything. I am attaching a picture with an arrow to it. Is this supposed to be hooked up to anything? Or any other recommendations on how to fix it?

I appreciate the recommendations given so far.

Oct 19, 2011 | 01:57 AM

HemiEater

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That's a vent.. so you have the downshift rod hooked up so the throttle lever will hit it about 1/2 to 3/4 throttle and push it backward as you go full throttle. If so you good..

go here and ask they will help you..

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