CarburetorsCarb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.
Welcome to ThirdGen.org!
Welcome to ThirdGen.org.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!
i have holley 650 my back barrels are not opening up do i need to buy another or can i fix it? and is thst the reason why my car was bogging out at 3000rpms
Vacuum secondaries, right? How do you know they aren't opening? Does it bog out at 3000 RPMs regardless of throttle position, or only 3000 RPMs at WOT?
If you are parked in the driveway or garage with the hood open and open the throttle while watching the secondaries, you won't see the secondaries open. They don't open that quickly, because you need to sustain flow through the primaries in order to create enough of a vacuum signal to start opening the secondaries, and sustain it to get them to open completely. Try that with no load on the engine and you're going to be sending rods through the block wall before the secondaries start to open.
A "bog" at 3000 RPMs regardless of throttle opening is not a secondary, or even a carb problem. It's an ignition problem (most likely). Could be other things, though, but still, not a carb problem.
