About 1976, I bought a loaded stock 72' Chevelle SS 396/402 with a T/400. I got it to daily drive, but as most of us, I couldn't help running it a few times. It was 15.40ish car with the 2.73 gear it came with, and I was determined not to mess with it at all.
Well, my neighbor had a 64' Chevy II with 13x5.5 wheels on the front with B60/13 Concorde Trac-Action Belted tires. The 64' was a transition year to the 5x4.75 pattern but still had 13" stock wheels. When he finally went to a mag wheel, I just had to have them and he gave them to me.
Fast forward, and I installed air shocks on the Chevelle, and used those 13's for track use. Those tires were somewhere in the 21/22" diameter range, and it took about 90lbs in the shocks to make the car level...lol. My purpose was to see how much the "gearing" change would make a difference vs the G70/15's that were on it.
Hard to believe a big block, although super mild, could hook at all with those tires, but it did very well, and actually went in the 14.80/90 range with them. Guys at the track thought I was completely nuts, but I brought them out 3 times and went rounds each time using them. Never won, but it was a lot of fun.....and the guys I beat were shaking there heads. :D
Sorry for the long post, just reliving my childhood.....lol.
