Re: VP converter- Trans visual ID guide
I bought my car and was told it had a Switch Pitch Turbo 400 in it.
1970 Buick GSX (tribute car), 455 Stage 2, TB 400, 3.42 posi.
I have a on / off toggle switch hooked up to it.
When I have it off it seems like an easyer shift, when I turn it on I get a snapper shift.
It doesn't seem to change my idle RPM though when I turn it on or off, should it ???
I also don't see any change in the RPM when I'm going at speed ether. Should I be seeing a difference in RPM at speed ???
I would have to check as far as to how it's powered, I had to replace the switch but I only replaced the switch, I didn't chase the wires to see were they went. But I would say it's only a on / off switch as there is nothing hooked up by the carb or anywere else that I can see that would control the tranny.
It was wrote up like this in the add:
Backing up the big block is a unique Turbo 400 outfitted with a "switch pitch" transmission and converter. With the simple flick of a switch located on the side of the console, this transmission will give you a high stall speed for performance driving, and a low stall speed for economy cruising. This equates to having the stall of a 10" converter for strip use and the stall of a 12" or 13" converter for street and highway driving, resulting in a half-second quicker ET on the strip and 2-3 more mpg on the street.
You folks have any thoughts ???
"Courage is being scared to death but saddling up anyway" John Wayne
BCA # 45934 / Central New England Chapter, BCA / BPG #2313
Buick GS Club of America # 2943 / Northeast GS/GN Club
Now: 1970 Buick GSX Tribute Car, Stage 2 455, SP TB 400, 3.42 Positraction
1968 Buick GS California, Midnight Blue, 350 ST300, than a 1974 455 TB400
1971 Buick GS, Lime Mist Green, 350 TB350
1974 Buick Century Wagon, Dark Brown, 455 TB400
2000 Buick Regal