I did a prevoius post on this item because I thought I had an oddball original 3810 (67) with one high speed vent blocked on both the primary and secondary sides.
In corresponding with Rob Axel, I find that I'm not alone. He has a 3367 (66) with only one high speed vent open on the primary side, both blocked on the secondary side, and a 3605 (66AIR) with both HS vents open on the primary side and both closed on the secondary side.
As I think I mentioned in the previous post, I have a later replacement 3810 with all 4 HS vents open.
So I'm scratching my head, is this common in older 66-67 original Holleys? What is the purpose of these vents and what would blocking the vents do. Would it make the carb run richer or make that channel flow with less gas, or just make the car run lousy.
Is this intentionally done, or could it be an oversight? Does anybody else have the same thing with original carbs.
Your comments would be appreciated. I'm wondering whether I should drill out the vents (and the primary metering block) on this original 3810 like the replacement.
In corresponding with Rob Axel, I find that I'm not alone. He has a 3367 (66) with only one high speed vent open on the primary side, both blocked on the secondary side, and a 3605 (66AIR) with both HS vents open on the primary side and both closed on the secondary side.
As I think I mentioned in the previous post, I have a later replacement 3810 with all 4 HS vents open.
So I'm scratching my head, is this common in older 66-67 original Holleys? What is the purpose of these vents and what would blocking the vents do. Would it make the carb run richer or make that channel flow with less gas, or just make the car run lousy.
Is this intentionally done, or could it be an oversight? Does anybody else have the same thing with original carbs.
Your comments would be appreciated. I'm wondering whether I should drill out the vents (and the primary metering block) on this original 3810 like the replacement.
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