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Jetting the Passion 12port


Capone

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thats almost identical to my set-up. Jim told me CGK 4th or 5th clip 50-55 pilot and 152-160 on the main. My porting might be a little different but it should get you in the ball park. and run rich for breakin. Nevermind my sig, the only thing I have left is the head and carbs. My 12-port is sitting next to me right now waiting for the lock-up from direct drive....(I fixed my sig)

Edited by fouledout2
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Fouled, your engine is completely different than Passion99's engine. Foulded's is a bridged exhaust 421 long rod. It will re-act entirely different than your engine. Passion99,as in ALL plate configured 12 ports yours will want a ton of fuel in the mid-range.....Jim

Edited by PassionRE
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