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#33463
johnyrude200
Participant

    the venturi’s are different; the manifolds appear to be the same via parts diagrams. Holding a 40hp next to a 50hp carb, you can see the venturi’s have a larger diameter visually in the 50hp carbs.

    I don’t have any of the newer plastic topped 50hp carbs in front of me, so I’d have to get back to you on that one if we’re comparing 50hp all-metal vs 50hp metal/plastic carbs.

    Seems in late ’92 they switched to the plastic 50hp carbs with larger orifice plugs.