I have been reading on various sources on the net about the 440 RB engines, specifically, 70 model year. I've seen it stated, the muscle car, manual transmission,and severe duty engines received forged steel cranks. Also, I've seen it stated, as the cast cranks began to be used, the performance cars, trucks, severe duty vehicles, and manual transmission 440 vehicles, continued to receive forged steel cranks.
I gather from this, there were no 440 cast cranks used with manual transmissions( bored and machined for the input shaft nose ?)
Whats the story ?
Thanks!!