I called him and can purchase if I want - however, what all do I need to use behind a bbb 455? thx buickstaged
Are you asking about using the two speed ST300 transmission behind your 455 (I wouldn't) or just the variable pitch torque converter? If the latter, you just need a variable pitch '65-'67 ST400 trans or a TH400 that's been converted to variable pitch and a flexplate with both large and small diameter converter bolt circles. The ST400 or converted TH400 can use the smaller diameter ST300 converter for a bit more stall. Devon
The 300 trans is pretty much scrap except for the converter. I scrapped 3 of those trans a few months back.