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Old 05-02-2021, 09:25 AM   #21
Model A Ron
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Default Re: 6.1 Head / Carburetor Choice

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Thanks Chris seems like as soon as many buy a Model A they want something faster and different. Different head, cam, carburetor, tires and whatever. Should have bought a hot rod in the first place. I bought it because it was vintage and simple and will keep it that way ! Wayne

Thank you I must have been confused. Time to get a 600 HP V8.
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Old 05-02-2021, 03:48 PM   #22
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Default Re: 6.1 Head / Carburetor Choice

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Thank you I must have been confused. Time to get a 600 HP V8.
I am not surprised !
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Old 05-02-2021, 04:30 PM   #23
Herb Concord Ca
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Default Re: 6.1 Head / Carburetor Choice / 600 HP V8

Brent, post #8. When I was still working we had a complete machine shop, the shop foreman was a car guy. He bored out 2 A intake manifolds to 1.25". I have used one since 1997.
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Old 05-02-2021, 07:48 PM   #24
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Default Re: 6.1 Head / Carburetor Choice

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I am not surprised !
I am not surprised as well. Some people do not get Satire
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Old 05-03-2021, 06:24 AM   #25
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Default Re: 6.1 Head / Carburetor Choice / 600 HP V8

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Brent, post #8. When I was still working we had a complete machine shop, the shop foreman was a car guy. He bored out 2 A intake manifolds to 1.25". I have used one since 1997.
Yes, they work well.

Interestingly enough, some folks talk about drilling them out however I prefer to bore them out instead. At slow(er) airflow speeds, the air/fuel mixture does not like a smooth runner surfaces as it causes the fuel to fall out of suspension and cling to the walls. When the manifold has a somewhat textured surface, the air is tumbled as it flows which actually keeps the fuel in suspension. Using a boring head in a Bridgeport mill creates more of a textured surface than a twist drill does, so it does help (-albeit marginally) in performance.
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Old 05-03-2021, 08:00 AM   #26
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Default Re: 6.1 Head / Carburetor Choice / 600 HP V8

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Maximum engine performance is all about matching air flow. The basic measurement for airflow is CFM, or cubic feet per minute. The model a ford engine flows at 170 CFM or so. The ford flathead v8 carburetor.. either stromberg 97 or holley 94 flow at roughly the same rate,this makes a single 94 or 97 an excellent choice.The weber 32/36 available from the vendors works well too..
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Old 05-03-2021, 08:40 AM   #27
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Default Re: 6.1 Head / Carburetor Choice

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Thanks Chris seems like as soon as many buy a Model A they want something faster and different. Different head, cam, carburetor, tires and whatever. Should have bought a hot rod in the first place. I bought it because it was vintage and simple and will keep it that way ! Wayne




Recently sold a Stromberg-Bendix intake manifold that was available through Ford dealers in 1931. The number of aftermarket performance parts for Model A engines in the 1930's was astounding. My CRAGAR OHV head was made in 1935. Then as now, there were A owners that kept them stock and then there were owners looking to get more performance out of a 40 HP engine. To each his own
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Old 05-03-2021, 01:38 PM   #28
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Default Re: 6.1 Head / Carburetor Choice / 600 HP V8

My Dad, who was around when Model A's were plentiful and cheap, asked me when I got the pickup I now have: "what are you going to do to 'hop it up'?"
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Old 05-06-2021, 07:39 AM   #29
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Default Re: 6.1 Head / Carburetor Choice / 600 HP V8

Carl, if your dad could see your pick up now.

Not sure if he would say, that damn hotrodder, or fine job son. Or maybe, fine job son, you little hottrodder!
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Old 05-07-2021, 06:42 AM   #30
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Default Re: 6.1 Head / Carburetor Choice / 600 HP V8

6.1 Head with a Stromberg 97
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Old 05-08-2021, 12:14 AM   #31
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Default Re: 6.1 Head / Carburetor Choice / 600 HP V8

Snyder 5.5 head, Stromberg 97, Intake and Exhaust Manifolds by Tod Buttermore.
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