Aa/sa class dq at denver

[Billy Nees]

Originally Posted by Frank Castros

Would we be talking about guys running 383 & 400 low blocks as a 440 because the current tech guys didn't know the visual exterior difference in blocks? As Marvin Gay sang "I Heard it through the Grapevine."

No,that's not it. I seem to recall NHRA lightening the piston/rod assy. weights to keep all of the 440+6 stuff from flying apart. I also seem to recall that right after that, they started staying together..... and going really fast.