Demon 625

qkcuda said

Thanks for the info. I am running mine on a mild 361 big block and figured it was fat. The plugs are a bit dark. Could you get away with just a primary rod change with the stock jets?

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That will thin it out a bit, but likely you will need a smaller jet. I went all the way up to the biggest rod in the kit .064-.056 with that 80 jet and it was still too fat. Then the 76 jet.. still too fat. The 74 with the .060-.050 did the trick with the smaller secondary jet.

Plugs I pulled this am. Dunno why it put my photo all the way up there...lol.