Shifting too soon

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Shifting too soon

Postby 65_Rat_Merc » Thu Sep 28, 2017 7:06 am

65 Comet, 200-6, C4 transmission. At full throttle, the trans is upshifting at about 3,200 rpm. How can I make it shift higher, at say 4,500 rpm???
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Re: Shifting too soon

Postby Lip Ripper » Thu Sep 28, 2017 8:09 am

Kick down working?
66 Cyclone GT; 245/60R15's on 15x8's and 215/70R15's on 15x7 Magnum's.
There's nothing like the sound of a pushrod V8 singing at the top of her lung's.
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Re: Shifting too soon

Postby 65_Rat_Merc » Thu Sep 28, 2017 8:29 am

Yes, the kickdown works.
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Re: Shifting too soon

Postby Santa's Comet » Thu Sep 28, 2017 9:21 am

You can get a little higher shift point by turning the screw inside the shift modulator.
Turning clockwise = higher
Later c4's you can change to different modulators.
As mentioned before the kick down needs to be set also.
Good luck!
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Re: Shifting too soon

Postby poboyjo65 » Thu Sep 28, 2017 10:01 am

Santa Dave is right. pull the vacuum line off & insert a small screwdriver , go about 4 turns at a time to start with.
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347, 4sp, 9''
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