Thoughts/experiences needed, more than familiar with the 68-70 B body 2 to 3spd wiper swap with regards to the wiper/transmission linkage being the same, dash wiring the same, 3spd switch required, and of course the 3spd wiper...
Vehicle is a 70 B body, and generally the 2822273 3spd wiper motor arm is recommended, but would a 67-68 B body 3spd arm 2580934, or a 68-69 B body 3 spd motor arm 2587692 be usable?, they all "appear" the same in relation to profile, I have nothing more than pics for comparison, If I had the actual arms, this question wouldn't be needed...lol!
The plastic cam on the 3spd 67-68 (2580934) has a "key/tab" on the outside of the wiper arm crank nylon bushing that could easily be trimmed off, assuming the bushing diameter is the same as the 70 transmission/wiper linkage? the 68-69 B body 3spd PN# 2587692 wiper/crank arm/bushing looks identical to the 70 B body set up (2822273)?
last but not least, would a variable 3pd wiper motor (is the motor truly variable?, or is that a function of a variable switch vs 3spd switch?) function the with 3 true speeds using the 68-70 3spd position B Body dash switch?, I sure someone has swapped/tried these combos out?