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I am building a 59A street engine for my '36 sedan. It is 3 3/16, .080 over with a Mercury 4" crank, which should yield 267 inches. I have an Edelbrock super manifold and I'm down to the point I need to select carbs. Any suggestions? As always, cost is a large factor. I have a friend who has a new, never installed 97 he wants to sell for $200 (no, you can't have his telephone number), but I think I might be better off with 94's. Sure could use some expert advice here.
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The 97 is a good carb, Correct for your '36 with the original engine. The 94 superseded the 97 in '39 and is a better match for your 59AB, and the 59 ('47-'48) would be even better. We used the 97's years ago on the dirt tracks because we could swap jets easier to match conditions, but they had a tendency to load up on the street. Using the correct formula, your 267 cu in X 3000 peak power rpm = 801,000 divided by 3,456 = 232 cfm for proper operation. If you plan to run your engine faster or slower, you can recalculate. Most flatheads produce maximum power in a narrow band centered on 2,500 rpm. You can use this info to compare carbs for your application if you plan to run it faster.
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