The track was open for test and tune today so I went down to help with the Belvedere. It had slowed down a little bit from where it had been running so they wanted my help to look things over. Eventually we figured out that the throttle linkage had backed itself off a bit and the throttle blades were not opening all the way. Once that was fixed it ran 9.84 at 134 mph. Fun ride for the guy. Engine is a 505 with TF 270 heads, solid roller with a Holley EFI setup.