Ok. V6 3.1L 1990 Firebird, when I'm at full throttle, a popping sound comes from what feels like my shifter. It's a scary, loud pop that only happens at full throttle. What can I check?

 

Might be a possible exhaust leak at the pipe that goes by that area. I know when I get to WOT and let off, I hear a series of popping noises..check the link in my sig, you can hear some of it when I get off the throttle.

If that is the case, then it's harmelss, other than losing exhaust velocity, but you can get some kind of wrap from an auto-store and seal it up for the time being until you can weld it up.

 

cat converter leaking
or if the sound is coming from big vibration,
i bet its ur transmount.

 

Well, I've been fiddling with the distributor, and now the sound is like a rattling/popping sound when I press the throttle. Could it be the timing? I set it to 10* BTDC.

 

So I've kinda isolated the sound, and it only happens when the engine first shifts gears. After it's shifted, the sound goes away. And it feels like its right in the shifter **** center console area, so i'm gonna rip that out today and see what's goin on. Anyone ever have something like this happen? What did it turn out to be?