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Old 10-18-2008, 09:32 PM
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rochester cfm rating

I picked up this carb from a buddy of mine but can't find the cfm rating anywhere online. You guys are way smarter than me so heres what I got.

7029120 69 Rochester 2-brl 396 Passenger Auto trans with AC

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Old 10-18-2008, 10:37 PM
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Here's an easy way. Look down the primary throats. 750s have a smaller throat. Just below the booster, the primary necks down a bit and you should see three rings that appear to be equally spaced. An 800 doesn't have that pronounced necking down and there will appear to be more space between the booster ring and the throat walls. Here are some photos that might help. The 750 is on the left:
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