I have a 20R pick up 5 speed and the engine sounds like a John Deer tractor. Running a weber 32/36, MSD ignition, wires, plugs and distributor are less then 1 year old. I have gotten the compression and exhaust heat checked from a respectable mechanic and all came out to spec. Besides the clanking noise you hear in the video the engine also has a lot of shake. The engine mounts are 4 years old, bought from eBay. I don't remember the actual brand or type. I have tried playing with the trimming and I get the same results. Faster rpm faster clanking.


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