glass packs finally woke up

its not a bad thing (not by a long shot) but yesterday, me and my dad were cruising in our 66 c10 in downtown corona nothing special just giving it a shakedown drive after the whole cooling system and fluids had been changed. but as we came around the corner of merril street we heard an odd sound, popping! the whole backfiring sound of glasspacks, i looked out the window, and sure as shit it was our truck! now why is this so special? weve had the truck 8 years, and got the new exhaust 7 years ago. we had never, ever heard the pop of the glasspacks till yesterday. now its happened twice since then and its sounds awesome! but is there a reason that it took so long for them to wake up? theyre smithy's with a full mandrel bent 2 inch exhaust on a bone stock 283.
im not really concerned, just curious why it took so long

 

Make sure your header or exhaust bolts are tight.

 

My Uncle used to load his cherry bombs full of used motor oil before bolting them on. After about 1/2 hour of throttle (and quite a bit of smoke screen.....which helps with the mosquitos in MN) they were ready to go. Most if not all of the glass packing long gone...

 

yep, finally wore in (or out) the packing. Ive only had them on one car, they were cheap and wore in quickly, you bought good ones, it took longer.

 

And you felt the need to post this why?

Sometime or anther they start to pop.

 

When i was a kid we would drive to the nearest muffler shop 20 miles away get new exhaust and then after we get back to my town pull into the carwash and blow water up the pipes,You could hear the packing cracking and then when you would fire it up most of the "guts" would blow out!

 

Look for a air/exhaust leak . Sucking air into the exhaust system slowing down with the throttle closed will cause what you are getting.

 

You finally burned the fiberglass out of them, there is a fiberglass filler material that they use in the chamber to make them quiet, and when that all burns out, you get the cackle.

 

Who cares, the dudes stoked on his truck.

 

carb maybe rich or engine off tune,check your air cleaner. mine back fired ,i loved it had to rebuild the carb no more backfire

 

weird you mention that. the carb was running to rich for almost a year and i finally realized one of the throttle plates was bent. finally fixed it last week, and thats when this started (well this week) but i guess it just blew out all the glass

 

be nice. the kid is in high school...

yeah nothing beats the sound of burned-out glass packs!
Ive heard of guys burning them out with torches before installing them..

even cooler sounding is one straight pipe and one glass pack.

 

thats what I think, exhaust leak sucking in air on the decel.