My '52 216 started that when I installed a new exhaust system. New system was more straight-through than the old one that was hush quiet. I've tried everything, carb settings, timing, valves, heat riser...just learn to live with it I guess.
Matthew 6:33
1952 Chevy 1/2-ton 3100 Late '55 235/SM420/torque tube 3.55 Dalton Highway survivor (using original 216) www.truckwithaheart.com
