The only difference from stock 400's were the pump, output shaft, switch on the valve body, and converter. We would switch them around all the time looking for more power. Check the junkyards for 65 thru 67 Olds, Buicks, Cady's. All would be big cars except the Oldsmobiles. They used them in the 2 speeds in the small cars as well as the big sleds.
You might check with a local transmission supply house. Here in Kansas City, MO and Wichita, KS ( A & Reds Transmission Parts ) E-Mail
[email protected] had most of what was needed to convert a standard over to S-P. They cut a converter apart for us so we could see what failed and how they work. Joe
