Thread: carb replacment

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A double pumper carb responds according to the whims of the driver. For a heavy vehicle at low speeds and low stall converter, when you bury the throttle the engine could be over-whelmed by fueld resulting in a low end bog or stumble.

A vacuum secondary carb responds to the need of the engine regardless of position of the primary throttle. It can be adjusted to come on quickly or slowly depending on what vacuum springs you use.

Here is a photo of my Barry Grant 870 Speed Demon with electric choke on a ZZ502 engine. A 750 cfm version of this would probably be a great carb for your 460.

Kitz