They actually tried running mufflers at Beltsville for a while and built a very tall wall to try to contain the sound. I was a very lucky fellow to have seen Tiny Lund win a GN race there over James Hylton in summer 1966. That race was the debut race for Bobby Allison's little maroon & white
#2 Chevelle which went on to win several "Northern Tour" GN races in the weeks that followed. The car's body work was unfinished at Beltsville and the numbers were made of white adhesive tape on the maroon doors. Richard Petty & David Pearson started on the fron row and David dropped the drive shaft of Cotton Owens' Dodge when the green dropped. Richard blew up while leading and Tiny and Hylton waged a fierce battle for the win. It was, without a doubt, the
VERY BEST RACE I EVER SAW in the 46 years I've attended races. Beltsville was a fine track. At one time, around '65-'67 or so, they ran their NASCAR Modified-Sportsman shows on Wednesday nights to avoid conflicts with Old Dominion, Southside, Langley Field and South Boston, where most of the Beltsville drivers were racing on Friday and Saturday nights.
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"Any Day is Good for Stock Car Racing"