Originally Posted By: intergrated j 78
The sm 420 explains why I thought that I saw a big rpm drop when you shifted 3.57 to 1.70 is a big drop. Nice vidio, I enjoied it a lot. Jay6155


Yeah in the 1st run it was the normal drop, but in the 2nd run when I did the 2nd gear burnout that's when the drop was real crazy cause I shifted before the tires caught grip. lol


1966 C10 292/tko600 http://67-72chevytrucks.com/vboard/showthread.php?t=596643
1964 C20 292/sm420