1967 CS with Jetaway - ClassicOldsmobile.com

1967 CS with Jetaway

Old February 11th, 2019, 09:23 AM
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1967 CS with Jetaway

I am rewiring a 1967 Cutlass Supreme with the 2 speed Jetaway. The device above the motor mounted to the firewall along with the carb linkage has two wires that go to the transmission which I assume are the wires that control downshift when needed. there is a third wire there, does anyone know what that wire is for? Does the downshift actuator need power?

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Old February 11th, 2019, 10:30 AM
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I'm sure someone more knowledgeable will confirm, but I believe the '67 Jetaway has a switch-pitch converter, so some of those wires are for that. My '68 w/o switch pitch had one wire for the kickdown.
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Old February 11th, 2019, 11:34 AM
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That is what it does.
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Old February 12th, 2019, 10:27 AM
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I know the device controls the transmission kick-down via the two wire connector. What I am trying to find out is what is that third single wire connector for? Do I need to run power to this device?

Thanks!
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Old February 12th, 2019, 10:58 AM
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Originally Posted by babailey View Post
I know the device controls the transmission kick-down via the two wire connector. What I am trying to find out is what is that third single wire connector for? Do I need to run power to this device?

Thanks!
Well, scroll up and read post #2...

You might want to invest in a Chassis Service Manual for this car. It has the answers to every question you've posted on Classic Olds so far.
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Old February 12th, 2019, 03:03 PM
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The Jetaway (ST300) is a switch pitch transmission. It uses a variable vane torque converter, the third wire is the control feed that is only powered at idle and WOT.
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Old February 13th, 2019, 09:08 AM
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OK, I've done some more research.

I can't find anything about this in the Chassis Service Manual, so if someone knows this by another name, please let me know.

These things sound pretty interesting and I find it fascinating that it only existed in a few cars in a few years.

I found a link to a thread that oldcutlass started back in 2009 where jimjr explained the switch and how in functions and how it is wire very nicely. https://classicoldsmobile.com/forums...djustment.html
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