Hi All.........
In my more ignorant pre-NCRS days, I purchased a rebuilt Quadrajet for my base model, automatic equipped, '72 from a local auto supply house. The carb came in a Holley box, and because of this, I assume it was rebuilt by them. But then again, there are so many companies outsourcing their work, I don't know for certain.
The carb has had the infamous flat spot at WOT ever since I got the thing (No! don't hit the "back" button yet!). Other than that, the carb's fine. But I think I've bumped into something that will have an effect on the flat spot and I'd like to get your thoughts.
Some of you are aware that I recently ripped into my dash to fix a myriad of wiring problems created by a previous owner. One of a number of things I found disconnected under the dash was the transmission detent switch that's activated by the accelerator when it's at WOT. According to the factory service manual, when this switch is activated it will cause the tranny to kick down one gear as long as the car is moving at less than 70 mph. Obviously, since it's been disconnected, it hasn't been kicking down the tranny like it's supposed to.
What I'm wondering is, if I wire this switch back up, and assuming it works properly, could the drop in gears at WOT and resulting RPM increase bring enough air flow through the carb to suck enough gas from the intermediate and/or primary circuits to reduce, or hopefully, eliminate my beloved flat spot?
I really don't want to have to buy another carb until I can afford the $300 purchase price and $400 or what ever Jerry Luck's charging these days for a proper rebuild on a correctly numbered carb.
Anyone have any experience with this?
As Always - Thanks,
Wendell
In my more ignorant pre-NCRS days, I purchased a rebuilt Quadrajet for my base model, automatic equipped, '72 from a local auto supply house. The carb came in a Holley box, and because of this, I assume it was rebuilt by them. But then again, there are so many companies outsourcing their work, I don't know for certain.
The carb has had the infamous flat spot at WOT ever since I got the thing (No! don't hit the "back" button yet!). Other than that, the carb's fine. But I think I've bumped into something that will have an effect on the flat spot and I'd like to get your thoughts.
Some of you are aware that I recently ripped into my dash to fix a myriad of wiring problems created by a previous owner. One of a number of things I found disconnected under the dash was the transmission detent switch that's activated by the accelerator when it's at WOT. According to the factory service manual, when this switch is activated it will cause the tranny to kick down one gear as long as the car is moving at less than 70 mph. Obviously, since it's been disconnected, it hasn't been kicking down the tranny like it's supposed to.
What I'm wondering is, if I wire this switch back up, and assuming it works properly, could the drop in gears at WOT and resulting RPM increase bring enough air flow through the carb to suck enough gas from the intermediate and/or primary circuits to reduce, or hopefully, eliminate my beloved flat spot?
I really don't want to have to buy another carb until I can afford the $300 purchase price and $400 or what ever Jerry Luck's charging these days for a proper rebuild on a correctly numbered carb.
Anyone have any experience with this?
As Always - Thanks,
Wendell
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