Rear exit Vs. Side Exit - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jmac05 · 09-03-2002, 06:38 PM

Does it make a difference as far as performance/sound where the exhaust comes out?

bigvinnie · 09-03-2002, 06:42 PM

if you enjoy exhaust noise more than music or conversation in your cab, side exhaust that exits in front of the rear tire is the only way to go...

mt Al · 09-03-2002, 08:21 PM

Just switched my suburban exhaust from side (in front of the rear tires) to behind the rear tires. It makes a HUGE difference in interior noise, not to mention not annoying people who try to get into the back seat with the fumes blowing at their knees. I'd strongly recommned having the exhaust exit behind the rear tires. It cost a bit more for the extra pipe going over the rear axle, but it was worth it.

MandarinSixSeven · 09-03-2002, 11:11 PM

I'm Gonna have to agree with vinnie, i went from rear to side exit, and love it!!! the sound of the exhaust beats out anything else i could possibly wanna hear while driving...but, if you have a burb or something with 4 doors, then rear might be a little more practical for people getting in and out, but if you dont care about them, then do the side

Chevy Punk · 09-03-2002, 11:17 PM

Is it too loud to talk or hear music?

Ackattack · 09-04-2002, 12:02 AM

I like my side exit in front of the tire. It is a little loud on long cruises. However, I plan on installing an X-pipe which is supposed to add performance and mellow out the noise.

PrimeredThunder · 09-04-2002, 12:13 AM

I originally planned on side exits, but later opted for rear duals swept to the side with 40 Series Flows and I absolutely love it! As of interior resonance, It's really easy to carry on a conversation and listen to some tunes without yelling

unless you dont care about sound level I'd definatly go out behind the tires.

Kenny

Woody · 09-04-2002, 08:23 AM

You see a lot of rear exit duals out on the road. However, I found out that with rear exit pipes, and a topper on your truck, if you open the top or side vent/windows on the topper, you will suck exhuast fumes in the back. Not good if the dog or kids are back there. Yea, it's a nit but some thing to concider none the less. I vote for side exit behind the tires.

68 with 350 TPI · 09-04-2002, 10:43 AM

Well I like it in front of the rear tires.

1) if you like the sound of your mufflers its cool

2) If you have to tow something it will keep carbon off of what ever you tow (with the exception of exhaust that is angled to each side).

3) I think it looks better.

Stout72 · 09-04-2002, 11:03 AM

If you really want it obnoxious, try 45 degree turndowns just after your Flowmasters, like mine. The rumble bounces up from the pavement and reverberates off the bottom of your truck bed. Gotta change that in the not-too-distant future. Thanks for the tips.

BigGreenMachine · 09-04-2002, 11:34 AM

Mine still run out the back, just like they came from the factory.

Southpa · 09-04-2002, 12:03 PM

One thing I noticed about side exhaust, you can REALLY hear how the left side of your engine is doing when driving beside those concrete highway dividers. The sound just bounces back.

nate68 · 09-04-2002, 08:59 PM

i have side exit behind the tire and its pretty quiet. before i had glasspacks off the headers turned down, big difference.
the sound bounces off whatever's to the side, i think its funny when a car is beside me that i dont like (especially a "sport compact" or something similar). it gives you the option to rev it and wreak havok (not really) not that i would do that cuz i dont care but some ppl on here would prolly have fun with that.

lectricman · 09-04-2002, 08:59 PM

i just had the side exit in front of the wheels put on my GMC and had turbo mufflers installed the sound is loud to start out or to tromp it but at cruisin speed it is not bad at all...P.S....i like the looks of it...Anthony

weasel29gm · 09-04-2002, 10:27 PM

I like the side exit, had them for ever.

bobs409 · 09-05-2002, 08:30 AM

Side exit for me. I love the sound of my Thrush bombs. If I had flowmasters, I bet it would be too loud so I'd have to say it depends on the mufflers.

Side exit is alot cheaper too when it's time to replace exhaust too! I paid $30 dollars for a pair of tailpipes (had them made) which will last me about 5 years. If I had to replace the mufflers too, it would cost me $60 total for those 5 years. It doesn't get much cheaper than that. The exhaust consists of a pair of headers, 2 mufflers and 2 tailpipes. Great for us cheapskates.

Kas68c10 · 09-05-2002, 10:39 AM

I have side exit in front of the back tires. Cheap, and not too loud unless I put my foot in it. Kinda funny looks when I am passin a rice burner and the headers are blattin right in the window. I will probably put in a cross over pipe in future,see if that quiets it down.

Kas68c10 · 09-05-2002, 10:51 AM

Should add the noise is ok with all windows shut. Can hear music and talk ok, but put em down, you gotta shout and need a thumpin stereo when cruisin (which I dont have)

Chevy Punk · 09-05-2002, 08:07 PM

thanks for the suggestions. I think i have decided on 3 inch turbos that exit in front of the tires. This board is awesome!

p.s. my dad works at midas so it'll be free!

09-03-2002, 06:38 PM	#1
Jmac05 L.E.D. Tail lights, Baby! Join Date: Jan 2002 Location: Corona, Ca Posts: 290	Rear exit Vs. Side Exit Does it make a difference as far as performance/sound where the exhaust comes out? __________________ *Prov 3:5-8* "Hook 'em" L.E.D. Taillights for sale NOW!!! If interested, visit: www.earlyclassic.com or our website: www.jmcled.com All 67-72 GM Taillights are on sale untill 5 p.m. on Dec 15th, with Guaranteed Christmas delivery! joel.mcwaters@jmcled.com

09-03-2002, 06:42 PM	#2
bigvinnie Registered User Join Date: Aug 2001 Location: escondido, ca 92026 Posts: 1,222	if you enjoy exhaust noise more than music or conversation in your cab, side exhaust that exits in front of the rear tire is the only way to go... __________________ '72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA 72 Stepside Project

09-03-2002, 08:21 PM	#3
mt Al Registered User Join Date: Aug 2001 Location: Bozeman, Montana Posts: 243	Just switched my suburban exhaust from side (in front of the rear tires) to behind the rear tires. It makes a HUGE difference in interior noise, not to mention not annoying people who try to get into the back seat with the fumes blowing at their knees. I'd strongly recommned having the exhaust exit behind the rear tires. It cost a bit more for the extra pipe going over the rear axle, but it was worth it. __________________ '72 GMC 1/2T 4x4 1500 Super Custom pickup (current) past rides were: '70 Chev 2wd farm truck '71 GMC 2wd 1/2T 402 nice! '72 Chev 2wd 1/2T 396 '72 GMC 3/4T 4x4 2500 Super Custom suburban. Bozeman, Montana

09-03-2002, 11:11 PM	#4
MandarinSixSeven Seasonal Poster Join Date: Apr 2002 Location: Kelowna BC Canada Posts: 896	I'm Gonna have to agree with vinnie, i went from rear to side exit, and love it!!! the sound of the exhaust beats out anything else i could possibly wanna hear while driving...but, if you have a burb or something with 4 doors, then rear might be a little more practical for people getting in and out, but if you dont care about them, then do the side __________________ 67 GMC Short Step 350/4-Speed/3.08 Posi Front/Rear Sway Bars Kelowna BC, Canada Member of DTPW

09-04-2002, 12:02 AM	#6
Ackattack Senior Member Join Date: Aug 2002 Location: Valley Center KS Posts: 3,524	I like my side exit in front of the tire. It is a little loud on long cruises. However, I plan on installing an X-pipe which is supposed to add performance and mellow out the noise. __________________ Project Bruiser: 68 Pro-Touring C-10 5.3L / 4L60E Project Ironhide: 97 GMC Crew Cab 4x4 Cummins SOLD: '69 GMC 1/2T SWB TBI'd: Project No Buck Assembly Manual Index Sign up Thread!!! Factory Service Manual Index

09-03-2002, 11:17 PM	#5
Chevy Punk Registered User Join Date: Apr 2002 Location: Blaine WA Posts: 455	Is it too loud to talk or hear music?

09-04-2002, 12:13 AM	#7
PrimeredThunder Back from the Dead Join Date: Dec 2001 Location: Salem, Oregon Posts: 522	I originally planned on side exits, but later opted for rear duals swept to the side with 40 Series Flows and I absolutely love it! As of interior resonance, It's really easy to carry on a conversation and listen to some tunes without yelling unless you dont care about sound level I'd definatly go out behind the tires. Kenny __________________ The only Carb that matters to me is the one under my hood! Salem, Oregon

09-04-2002, 08:23 AM	#8
Woody Registered User Join Date: Feb 2000 Location: Georgetown, KY, USA Posts: 631	You see a lot of rear exit duals out on the road. However, I found out that with rear exit pipes, and a topper on your truck, if you open the top or side vent/windows on the topper, you will suck exhuast fumes in the back. Not good if the dog or kids are back there. Yea, it's a nit but some thing to concider none the less. I vote for side exit behind the tires.

09-04-2002, 10:43 AM	#9
68 with 350 TPI Registered User Join Date: May 2002 Location: Wingate NC Posts: 456	Well I like it in front of the rear tires. 1) if you like the sound of your mufflers its cool 2) If you have to tow something it will keep carbon off of what ever you tow (with the exception of exhaust that is angled to each side). 3) I think it looks better. __________________ Life is good with a 6-71 supercharged 355 in a 72 camaro

09-04-2002, 11:03 AM	#10
Stout72 Not my good side. Join Date: Mar 2002 Location: Fairfield, California Posts: 222	If you really want it obnoxious, try 45 degree turndowns just after your Flowmasters, like mine. The rumble bounces up from the pavement and reverberates off the bottom of your truck bed. Gotta change that in the not-too-distant future. Thanks for the tips. __________________ 72 Chevy K20 Custom Camper, 350/350, 4" lift, dual shock suspension front & rear. Daily driver and a work in progress. 00 Suburban LT 90 Camaro RS 79 Yamaha XS1100 Special (Ol' Reliable)

09-04-2002, 11:34 AM	#11
BigGreenMachine Registered User Join Date: Mar 2001 Location: Lynchburg, VA Posts: 144	Mine still run out the back, just like they came from the factory. __________________ 1970 C/20 400(402)BB/TH-400 Factory A/C Factory Dual Exaust

09-04-2002, 12:03 PM	#12
Southpa Registered User Join Date: May 2000 Location: Victoria, BC, Canada Posts: 2,409	One thing I noticed about side exhaust, you can REALLY hear how the left side of your engine is doing when driving beside those concrete highway dividers. The sound just bounces back. __________________ 1970 GMC 1500 Custom Original 350/TH350 Victoria, BC, Canada You can wish in one hand and crap in the other. See which one gets filled first.

09-04-2002, 08:59 PM	#13
nate68 Registered User Join Date: Jan 2000 Location: ca Posts: 1,110	i have side exit behind the tire and its pretty quiet. before i had glasspacks off the headers turned down, big difference. the sound bounces off whatever's to the side, i think its funny when a car is beside me that i dont like (especially a "sport compact" or something similar). it gives you the option to rev it and wreak havok (not really) not that i would do that cuz i dont care but some ppl on here would prolly have fun with that. Attached Images __________________ 68 short step, 406/700r4, 9" w/discs.

09-04-2002, 08:59 PM	#14
lectricman Registered User Join Date: Aug 2002 Location: Huntington,West Virginia Posts: 6	i just had the side exit in front of the wheels put on my GMC and had turbo mufflers installed the sound is loud to start out or to tromp it but at cruisin speed it is not bad at all...P.S....i like the looks of it...Anthony

09-04-2002, 10:27 PM	#15
weasel29gm SLOW BUT SURE,BUT CLOSER Join Date: Feb 2002 Location: eleanor wv usa Posts: 3,097	I like the side exit, had them for ever. __________________ 69 C-10, OWNED 38YRS... 350 over 30, 350 Turbo, 3:73 Posi P/S, P/B Black with red and black int. ''LOVE THESE OLD ''TRUCKS.......



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09-05-2002, 08:30 AM	#16
bobs409 1969 Custom 30 wrecker Join Date: Sep 2001 Location: Pottsville, Pa Posts: 2,611	Side exit for me. I love the sound of my Thrush bombs. If I had flowmasters, I bet it would be too loud so I'd have to say it depends on the mufflers. Side exit is alot cheaper too when it's time to replace exhaust too! I paid $30 dollars for a pair of tailpipes (had them made) which will last me about 5 years. If I had to replace the mufflers too, it would cost me $60 total for those 5 years. It doesn't get much cheaper than that. The exhaust consists of a pair of headers, 2 mufflers and 2 tailpipes. Great for us cheapskates. __________________ Bob 63 Impala 283/PG/3.36 (under restoration) 66 Impala 327/PG/3.36 66 Chevelle SS 409/M22/3.55 69 Chevelle 307/PG/3.08 (future restoration) 69 C10 short stepside 454/TH350/3.73 69 Custom 30 tow truck 350/4 spd/4.10 (resto done, CRUISIN TIME!) 71 Cheyenne 20 fleetside 350/4 spd/4.10 71 Chevelle 6/PG/3.08 72 Chevelle 454/M21/4.10

09-05-2002, 10:39 AM	#17
Kas68c10 Registered User Join Date: Apr 2000 Location: Freeland,Michigan,USA Posts: 312	I have side exit in front of the back tires. Cheap, and not too loud unless I put my foot in it. Kinda funny looks when I am passin a rice burner and the headers are blattin right in the window. I will probably put in a cross over pipe in future,see if that quiets it down. __________________ 1968 SWB Stepside, 250,pwr disc brake and tilt pwr steering, 5 spd tranny, HEI,Accel coil,K&N filter,Seat from a later truck with built in seatbelts, front and rear sway bars, moved gas tank to under the bed, headman hedders, new chrome bumpers,one wire alternator,Weber k550cub carburator...WORK IN PROGRESS, Freeland MI , Just bought a 72 Jimmy!!!!!!!!!!!

09-05-2002, 10:51 AM	#18
Kas68c10 Registered User Join Date: Apr 2000 Location: Freeland,Michigan,USA Posts: 312	Should add the noise is ok with all windows shut. Can hear music and talk ok, but put em down, you gotta shout and need a thumpin stereo when cruisin (which I dont have) __________________ 1968 SWB Stepside, 250,pwr disc brake and tilt pwr steering, 5 spd tranny, HEI,Accel coil,K&N filter,Seat from a later truck with built in seatbelts, front and rear sway bars, moved gas tank to under the bed, headman hedders, new chrome bumpers,one wire alternator,Weber k550cub carburator...WORK IN PROGRESS, Freeland MI , Just bought a 72 Jimmy!!!!!!!!!!!

09-05-2002, 08:07 PM	#19
Chevy Punk Registered User Join Date: Apr 2002 Location: Blaine WA Posts: 455	thanks for the suggestions. I think i have decided on 3 inch turbos that exit in front of the tires. This board is awesome! p.s. my dad works at midas so it'll be free!

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