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EFV-8 Club Forum / General Ford Discussion / carberator

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Discussion Topic: carberator

henlinee

02-16-2018 @ 12:15 PM

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I remember maybe ten years back some one talk about putting a chev carb on a merc intake is this possible ? Billl

ken ct.

02-16-2018 @ 2:09 PM

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Why would you want to do that !!! ken ct

40cpe

02-16-2018 @ 2:29 PM

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Yes, a small base Rochester can be used. It fits the mounting bolts but is a slight mis-match on the bores. The manifold should be bored to match the Rochester. Mount the Rochester backwards on the Merc manifold and the Ford linkage connects right up. The reason you would want to do it is that it flows about twice as much as a 94.

TomO

02-17-2018 @ 8:38 AM

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If 40cpe statement about the flow is correct, the mixture would be too rich for good operation of the engine. Carburetors at best are a compromise and the engineers found the best one for all around driving. If you are going to drag race the car, and do not care about longevity, there are better options for more fuel flow.

Tom

ken ct.

02-17-2018 @ 1:12 PM

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Thank You Tom , Ken Ct.

40cpe

02-17-2018 @ 1:31 PM

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It is mostly done on modified engines. The carburetor is rated at ~285 cfm and flow is controlled by the accelerator. My engine (276") has light tan spark plug tips. I don't have an air/fuel ratio meter, but it seems to burn clean.

TomO

02-18-2018 @ 9:26 AM

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That's a long way from the 239 cu. in. of the Ford engine, and with those cu. in. you do need more flow than the 8BA carb.

Tom

supereal

02-24-2018 @ 12:49 PM

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We have used an aftermarket intake manifold with a correctly sized four barrel carb on some of our rebuilds. This allows the primaries to match the CFM for all around driving, and mechanical rear barrels to open when demand increases. Years ago, Ford produced carbs with a variable venturi, but abandoned them due to problems.

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