snap crackle pop
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Senior User
Joined: Mar 2017
Posts: 395
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From: Everton MO
snap crackle pop
I have a flow-master super 50 on a 300, yeah i have a 300 single exhaust and i want it to sound good. will shrinking my exhaust tip make it crackle a little because it will have more back pressure. I know a basic concept of exhaust but i still wonder sometimes
I put this on exhaust forum but nobody has been there in a month.
I put this on exhaust forum but nobody has been there in a month.
Fleet Mechanic
Joined: Nov 2002
Posts: 1,643
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Usually a blown out gasket at an exhaust port or leaking donut gasket at the head pipe is enough to do it. Since I never intentionally wanted my engine to do that I never measured how much of a leak is required. Mine cackle enough on coastdown with high compression and long duration cams.
Elder User
Joined: Apr 2012
Posts: 544
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From: Kalispell, MT
Recently bought an 81 f150 for my boy's 1st vehicle. It has a carb'd 300 with an np435. Its 4wd. Anyhow...most of the exhaust was rusted thru up to the factory cat. I pulled the entire exhaust out, cut off the cat, hollowed it out completely and welded it back on just behind the bellhousing. Put another 2 ft of tubing behind that with a turndown, slightly angled out to passenger side. It seems to snap and pop pretty "good" i guess one could say. My 16 year old son sure likes the loud buzzin half dozen!
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Senior User
Joined: Mar 2017
Posts: 395
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From: Everton MO
thanks for input mine dumps at the minimum legal length and is a 3 inch pipe which makes it very deep, i have heard that a shorter smaller pipe will help with coasting pops. not sure how that works. I agree with the cam that would definitely do it.
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Freshman User
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I've had my EGR plug work loose, if that's the sound you looking for, this is an easy way to so it.
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Senior User
Joined: Mar 2017
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From: Everton MO
my egr is plated off and has just the tube running from the exhaust manifold to it, can i do anything with that tube to make a cool sound even if its not the crackle sound im looking for such as, taking the tube off the egr and running it out the back straight from the exhaust manifold? or will that just give the puffing sound of an exhaust leak?
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An old buddy of mine when we were in high school used to get his Firebird hot and the switch it off, tahe the water hose and fill the mufflers with water to rust the baffles out. Finally he got the sound he wanted. That was about 50n years ago.
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