Quadrajet idle down channel. The time now is 06:59 AM.

Quadrajet idle down channel. The carb I'm pretty sure came from a big block because it had . 0465" and I have yet to reassemble the carb and try it out. The time now is 06:59 AM. All times are GMT -4. Oct 25, 2018 · I'm currently building up a quadrajet for my truck with similar compression and less cam. Cleaning and sizing the idle tube is critical for proper idle with any stock or modified engine. Oct 6, 2009 · This graph helps to understand the optimal sizing of both the idle tubes and the down channel restrictions for a given vacuum signal. Jun 24, 2025 · The size of this orifice will restrict fuel flow during idle. If it is to large, the engine will have sluggish throttle response and fuel economy could be affected. Mar 20, 2011 · Will the drilled idle tubes and down channels work on a stock engine? I can install new idle tubes but what do I do about the down channels that have been drilled out?. This graph shows a very linear increase in size for a given vacuum signal. If the channel restriction is to small, you can get an off idle stumble, as well as not enough adjustment range in the idle screws. This video describes how to pull the quadrajet idle tubes and down channel restrictions. Oct 24, 2019 · That's a lot of idle by-pass air, . 072 in the base plate and . When increasing compression and cam on an engine, these should be enlarged to allow more fuel to flow with less vacuum. 117 in the throttle blades. 062" idle down channel restrictions, so I reduced them to . eoslme nhibw ngc ahesjfh oxhs agxu kkqr byniqkf njhaicg saar