I have a single wire that goes to a 2 terminal plug/connector on the side of the trans. I assume one's for passing gear. Any easy way to tell which one gets the SP wire? Thanks
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TH400 switch pitch question
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connect it to one of them and see what happens. If it won't up shift, that's the kickdown. If the converter gets a bit looser, that's the switch pitch.My fabulous web page
"If it don't go, chrome it!" --Stroker McGurk
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I coulda figured that out if I went out and looked at one of my rides.My fabulous web page
"If it don't go, chrome it!" --Stroker McGurk
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Originally posted by Scott Liggett View PostThe top terminal is horizontal, it's the pressure switch. The vertical terminal below it is the detent or downshift switch.STUGOTS
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Originally posted by groucho View PostThanks Scott. I have a lot to do on this car and my luck I'd forget about the connection entirely later on when it gets on the road and the trans acts up. My mind would jump to bad trans at that point if enough time lapsedBS'er formally known as Rebeldryver
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The Caprice probably didn't have a switch pitch converter, it more likely had TCS. The early 70s Chevys usually did. The second wire on those ones is for Transmission Controlled Spark, which changes the vacuum advance depending on what gear the transmission is in.
Switch Pitch was never installed on a Chevy from the factory....it was a Buick thing, with use on some Cadillacs and Oldsmobiles.My fabulous web page
"If it don't go, chrome it!" --Stroker McGurk
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Originally posted by squirrel View PostThe Caprice probably didn't have a switch pitch converter, it more likely had TCS. The early 70s Chevys usually did. The second wire on those ones is for Transmission Controlled Spark, which changes the vacuum advance depending on what gear the transmission is in.
Switch Pitch was never installed on a Chevy from the factory....it was a Buick thing, with use on some Cadillacs and Oldsmobiles.Last edited by groucho; December 18, 2012, 07:55 AM.STUGOTS
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