exhaust cutouts.... Pt. 2....SOUND - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevjayfsd · 08-06-2003, 12:24 PM

Lets drop the performance side of things for now...

If I am going to run cutouts, will it sound like open headers even if some exhaust gets to the muffler?

Or will it still sound like mufflers?? Its a 350 with headers...

The only doubt i am having is because you can not restrict all air flow to the mufflers using cut outs, how much exhaust will actually reach the cutout?

I guess my question is this...
Will I be able to tell a huge difference in sound, a small difference in sound or no difference in sound??

Thanks
Jason

smokekiki · 08-06-2003, 01:04 PM

I would think most of the exhaust will go out the cutout.The exhaust gases need to curve to go to the muffler.

white68chevy · 08-06-2003, 01:06 PM

i do not have them personally but a buddy of mine has them on his 68 skylarke. He has 2 1/2 in. pipes flowmasters and cut outs. when he opens them up you can not even tell that it is still running thru the mufflers. Sounds like straight open headers to me.

jays68yak · 08-06-2003, 01:52 PM

I would say its inbetween. I have cutouts on my lemans, altho it has been awhile since the thing ran with out them. It is louder then mufflers, but not louder the straight exhaust. Mind you its a small difference from straight exhuast and the cutouts.

67chevemall · 08-06-2003, 01:55 PM

I would just go drill a 3" hole in your mufflers and it should sound almost the same!!

Cheers

Good Luck!

08-06-2003, 12:24 PM	#1
chevjayfsd Project 7dos Join Date: Aug 2001 Location: Abilene, Texas Posts: 876	exhaust cutouts.... Pt. 2....SOUND Lets drop the performance side of things for now... If I am going to run cutouts, will it sound like open headers even if some exhaust gets to the muffler? Or will it still sound like mufflers?? Its a 350 with headers... The only doubt i am having is because you can not restrict all air flow to the mufflers using cut outs, how much exhaust will actually reach the cutout? I guess my question is this... Will I be able to tell a huge difference in sound, a small difference in sound or no difference in sound?? Thanks Jason __________________ 7DOS - 1972 C-10 350/350 Porterbuilt/Accuair 20x8.5/20x10 Ride Low or Die PSSST - Yes it's bagged. 7dos build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=610290

08-06-2003, 01:04 PM	#2
smokekiki Mike Join Date: Jan 2003 Location: west chester pa Posts: 2,473	I would think most of the exhaust will go out the cutout.The exhaust gases need to curve to go to the muffler. __________________ 70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires

08-06-2003, 01:06 PM	#3
white68chevy Registered User Join Date: Feb 2001 Location: Hurst,TX,US Posts: 301	i do not have them personally but a buddy of mine has them on his 68 skylarke. He has 2 1/2 in. pipes flowmasters and cut outs. when he opens them up you can not even tell that it is still running thru the mufflers. Sounds like straight open headers to me. __________________ 1968 swb IM-Bufechevy56 If its to loud then your to old

08-06-2003, 01:52 PM	#4
jays68yak Registered User Join Date: Oct 2002 Location: Gilroy, CA Posts: 1,454	I would say its inbetween. I have cutouts on my lemans, altho it has been awhile since the thing ran with out them. It is louder then mufflers, but not louder the straight exhaust. Mind you its a small difference from straight exhuast and the cutouts. __________________ 1969 Chevy Project SWB Fleet, 20s, 5.3, t56, in the weeds. 1970 Chevy Truck cab on a 1979 Jimmy frame-8.1 liter 496 bbc/sm465/np203-jeds doubler-np205/d60/14bff Welded/42 tsls on recentered H1s 1998 Chevy Crew Cab K3500 SAS'd with hpd60, links and swayaway coilovers. 8.1l vortec DD/towrig "I like long walks, especially when they are taken by people who annoy me. "

08-06-2003, 01:55 PM	#5
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	I would just go drill a 3" hole in your mufflers and it should sound almost the same!! Cheers Good Luck! __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD



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