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Afternoon Flatheader's, I'm after some advice on my 8CM. It idles fine, but when you get on the gas it starts to splutter. The engine is stock, with an electric fuel pump. So far we've checked/replaced: - Changed condenser - Changed vacuum diaphragm in vacuum advance - Set timing at 2° at...

Hi All, Looking for some advice on upgrading my currently standard 8CM Flathead. I'd like to get some Offenhauser cylinder heads, and have seen they come in 400/425 new, or sometimes some older 375s come up. What would be best for a stock 8CM engine? I've got hold of the Flathead compression...