Sorry, no. The S/P trans has a different input shaft from the regular Turbo 400. Torque converters don't interchange either way.
So I can't use it, alright. But what do I do now? I'm doing major engine work and the power and is going to be moved probably right around 2500-2700. How can i use the s/p to my advantage, i think that it stalls at 1300 and 3300 or somehting like that, am I right?
You'll need a special switch pitch converter to use the switch pitch. The low stall is for the top end/normal driving. The high stall is for stoplights so you don't creep, downshifts, and launches.
so the high stall will just automatically kick in if I stomp on it? How does the transmission know which to use? will the ol s/p be able to handle the fury of my rebuilt and beefed up 430?
Rather than type a reply, here are some good links full of educational info to get you familiar with how the variable pitch feature works: http://www.442.com/oldsfaq/oftsp.htm http://www.unm.edu/~geoffj/Vair/Coronado/TwoTimer-SwitchPitch.pdf Devon
Switches at the throttle linkage control S/P converter actuation. You can also use a S/P converter from a similar vintage GM ST300 trans. It's about and inch smaller diameter S/P converter and the rpm stall ranges are higher. I've got those exact figures somewhere, just not available to me now. I pulled one from a junkyard '65 Olds Gutless and used it as a core to a local trans shop. The refurbished unit cost me under $100.
11 converter ST300 2-speed has a low stall speed of approximately 2300-2500 rpm. High stall speed of approximately 2800-3000 rpm. 12 converter in TH400 3-speed has a low stall speed of approximately 1800 rpm. High stall speed of approximately 2600-2800 rpm. http://www.442.com/oldsfaq/oftsp.htm
