Stock tach swinging August 28, 2016, 03:55:20 PM Got a new trans installed - slippage seems to be much better with anywhere between 16% slippage at 4k, 7% at 5k, and 5% at 6k (3k PI 9.5" converter). Now I've moved onto my engine. I've had a slight misfire for what seems like an eternity - I believe I had the same issues with different heads, lifters, pushrods, intake, and rocker arms. The parts that haven't changed have been the shortblock, '89 HO camshaft, and distributor/some sensors. I probably had a slight misfire for the 30k miles I put on the shortblock since the time it was rebuilt.Here's a video of what's happening at WOT: https://www.youtube.com/watch?v=LiD_DhcINGI&feature=youtu.beOn cold start especially, occasionally my tach will twitch, but almost every time I start the car cold, speedo will swing between 20-30mph, until the engine heats up. I'm going to try swapping the distributor/TFI since that has been a constant.Has anyone ever seen this behavior? In the (uphill) WOT run above, I could feel the engine starting to miss frequently. I'm going to be reviewing the datalogs to get a better idea of what was happening there. Quote Selected