Going lean when shifting...
- On the primaries: Yes.
- PCV hooked up: Yes.
- PCV working: Dunno.
- Automatic: Yes.
- Headers: Yes.
- Holding the gas pedal steady: Yes.
- Only during the shift: No, but I was going to mention it later. It also does this same lean spike about 1.5 seconds after easing into the throttle from a dead stop. Completely related is my theory. So fixing one, should fix both.
- Intake manifold: I believe is the stock LA 360 manifold
- At what rpm: It shifts at about 2,200 - 2,400 rpm. As I mention, I'm just easing it around when it does this.
- Idle timing: Static 11°~12°
- Timing Advance all in: ~2,600 rpm or so. I'm guessing it's the original distributor.
- Cam Specs: Dunno. Slightly aggressive, not a big loper.
Your reading of my situation ... here's where I can identify possible differences.
- Secondaries closed: Yes.
- Metering rods down: I doubt it. I've got the biggest spring in there available from Edelbrock. At least I think it's the biggest spring (I'm starting to 2nd guess myself). The friggin colors are difficult to distinguish but I spent a lot of time staring all the barely different colors in an effort to try to choose the stiffest ones. And squeezed them too. That's not to say I didn't flub it up. But I was careful.
- A1: When the engine is not fully warmed up, it tends to nose over. Especially 1.5 seconds after gently accelerating from a full stop. Full throttle or just aggressive starts, this is not an issue. But the poe-lease around here don't like it when I do that. It noses over a bit at 1.5 seconds from leaving a dead stop, even when fully warmed up.
A) I sure hope my VA is not vacillating. Hey uhhh ... what's vacillating mean?
My vacuum gauge doesn't have a long enough hose to watch it while I'm driving. Guess I could just swing by Home Depot and correct that though. I'm just learning all this stuff, so, the screw inside (the distributor?) sounds difficult, because I've not done that or learned about that screw before. What does this screw do?
B) I'm assuming the PV system is the Power Valve? Does an Edebrock have this? I've heard of this on Holleys, but not on Edelbrocks. Or maybe you're referring to the Power Mode portion of the metering rods. This is my leading theory, the rods are not pulled up out of the mains, or fall below the step when it shifts. And the AFR's go lean. I can feel the power loss, when just toodling along, slowly accelerating. I'm going to double check the springs I've got in there, make sure I have the stiffest.
C) Not running a 3200 TC. Not full timing by 2,000 rpm.
D) I would not worry about it either, if I weren't feeling it.
E) Not following the T-port. What is a T-port? Throttle port? Is this related to the screw you mentioned previously?
Very helpful. Thanks for the info.
7milesout
