Took the 69 Skylark to the track yesterday. Affectionately referred to as the Rust Duck, it's an all steel, rust, and Bondo body, full interior, AC deleted, PS, with manual drums. 455/TH400 with an unknown blue painted Tc, 8.5/3.55 Edelbrock heads, SP1, QJ or Demon 850, unknown cam with 1.6 rollers at .507/.512 lift, duration @ .050 around 230/245. MSD Digital-6, billet no vac distributor, 35 total all in by 2500. 275-60-15 EAT Streets @18psi Shifted at 5200. Ran 12.3s/106 with 1.555-1.666 60's with traction. 13.s/106 with no traction. It felt like it was max'd out at 105-6 / 5300 rpm range (my guess) 100+ feet from the trap. Just wouldn't rev past 52-5300. Can the converter inhibit RPM at the top end? Driving normally it feels way more loose than the 3200 L/U I had in the GN.