NO WAY… Factory had a performance TH400s for the Muscle cars. How do you tell?

NO WAY… Factory had a performance TH400s for the Muscle cars. How do you tell? To this day the TH400 is one of the top performing Transmissions in the Drag Racing community. We hope you all have a wonderful day enjoy the video and thanks for watching.👍🏼❤️🙏🏼