Thread: 383 Stroker low vacuum and sluggish

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36sedan, I have the gauge hooked up to the right manifold port one. With throttle stop backed all the way out, adjusting the carb still has no effect. I can shut both mixture screws and it’ll still run, but makes some squeaking noise. With idle screw backed out and timing advanced to keep rpm around 700, vacuum was at around 5. Bring it to about 1000 rpm and it’s at 10 inches vacuum. Also, looks like I don’t have a choke at all. Starting to think I just have a lot of problems. I checked the balancer and for slippage and it was good. I’ll find TDC this weekend but even if the marks are incorrect, that won’t help because I’ve tried finding the best vacuum with a wide range of timing adjustments and can’t seem to get over 10ish. I really appreciate your time and help, but I might have to either take it somewhere or just work on it over time. Thank you so much!