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I Am just building an 1835 for my 67 Notch an am up to setting the deck height using shims so as to obtain a compression ratio that wont blow my heads off but will give me plenty of power. Standard 1600 engines had a ratio of 7.5 : 1 and the 1500s had 8.5 : 1 as far as I know. I am thinking of going for around 8.0 : 1 for mine. It will be a daily driver so I want it to run cool but, ofcourse, I want as much power I can get out of it as I can. Its an 1835 pancake with twin solex carbs, 009 dizzy, ap2 cam - quite mild only a lift of about .400" around the same as an Engle 90 if they were to have ever made one! What compression ratios are ppl here running? and what sort of heat do they run? Can anyone suggest a better ratio to run? Thanks Dak on, Simmo