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#1 |
Registered User
Join Date: Sep 2011
Location: Eau Claire, Wisconsin
Posts: 415
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New exhaust, should I keep it before rear tires?
I just did a big block swap on my 69 shortbox this winter and am now ready to take it in for exhaust. The truck has had the exhaust exiting before the rear tires since i have bought it and i have liked it. I just ordered new flowmaster super 44s and have hooker long tube chevelle headers on it. Im running 3 inch on it this time around and am wondering will the exhaust be too short if i route it the same or will it sound better out the back? I kind of like the clean look of no big tailpipes out the back. Also should i have an H pipe put in or isnt it really worth it? Any input is appreciated, its going in next week sometime hopefully.
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1969 shortbed c/10 1998 GMC sierra |
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#2 |
Registered User
Join Date: Sep 2011
Location: Eau Claire, Wisconsin
Posts: 415
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Re: New exhaust, should I keep it before rear tires?
This is a pic of how it has looked. It has a rear roll pan as well.
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1969 shortbed c/10 1998 GMC sierra |
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#3 |
Registered User
Join Date: Jan 2013
Location: Mickleton, NJ
Posts: 1,776
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Re: New exhaust, should I keep it before rear tires?
It will be louder in the cab in front of the tires. Personally, I prefer the look in front of the tires. Its says more "hot rod" to me.
I did 2.5" with stainless slash cut tips in front of the tires, but I did Magnaflows to keep the sound tolerable. An H-pipe will mellow it a little and make it sound better just standing on side, and will improve power a little. ![]() ![]()
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Shawn 1970 Chevy C-10 SWB, 350, TKO 600 5 speed My build http://67-72chevytrucks.com/vboard/s...d.php?t=559881 |
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#4 |
laying low
![]() Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,200
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Re: New exhaust, should I keep it before rear tires?
You liked that side exit with the small block. Now with a big block and 3" blows it will really make some noise. I'd say go with the side exit on it like you have now and you will know if it's still ok or intolerable. If it's too much you can always have the pipes dumped just aft of the rear end or angled out behind the tires.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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#5 |
Registered User
Join Date: Sep 2011
Location: Eau Claire, Wisconsin
Posts: 415
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Re: New exhaust, should I keep it before rear tires?
Yah i guess its always been pretty loud, it just had 20 year old glass packs on it with the small block. Thats ok with me because its my poor mans hotrod. I like it fast loud and low.
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1969 shortbed c/10 1998 GMC sierra |
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#6 |
Registered User
Join Date: Feb 2012
Location: Smyrna TN
Posts: 1,153
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Re: New exhaust, should I keep it before rear tires?
Here's how I do my exhaust.
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1971 Longbed BB Cheyenne Super 1972 Longbed SB Cheyenne Super 1972 Longbed Highlander Custom Deluxe 1975 K5 4x4 full convertible Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=645165 Greg Smyrna TN |
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#7 |
Registered User
Join Date: Feb 2012
Location: Smyrna TN
Posts: 1,153
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Re: New exhaust, should I keep it before rear tires?
A few more.
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1971 Longbed BB Cheyenne Super 1972 Longbed SB Cheyenne Super 1972 Longbed Highlander Custom Deluxe 1975 K5 4x4 full convertible Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=645165 Greg Smyrna TN |
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#8 |
RAT1968 '68 Cab/'71 Parts
Join Date: Feb 2002
Location: Coarsegold, CA
Posts: 2,375
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Re: New exhaust, should I keep it before rear tires?
I basically got screwed with this exhaust install.
I wanted 2.75" dia pipe....and for the pipes to run all the way out that back, yes... .....But further apart, keyed on the outside edges of the "H" on the left, and "E" on the right. I supplied him with new FM 40-series. I ended up with this for now. Other than missing a few welds (now fixed) , using 2.25" pipe, and not getting the spread right, the system sounds pretty good for what it is. He did tuck everything up and under nicely. Since I used a lot of sound deadening material in the cab, it has a nice mellow sound while driving. And, it's not harsh to other folks driving, walking or riding bikes next to me in traffic. Here's the sound while I was setting up the idle speed: http://magwa.smugmug.com/Exhaust/
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M17 Coarsegold, CA RAT's shiny now. But always a rat. |
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#9 |
70+ ( Old Skool Club )
![]() Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,115
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Re: New exhaust, should I keep it before rear tires?
This isn't my truck but the way I'm going with my truck when i get the exhaust system redone this spring. Its the there but not in your face look I like.
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1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
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#10 |
Registered User
Join Date: Dec 2014
Location: Newark, De
Posts: 58
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Re: New exhaust, should I keep it before rear tires?
Keep 'em in front. that way it blows tire smoke out the sides.
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#11 |
Scrapper 1
Join Date: Jan 2007
Location: Riverside Calif
Posts: 1,649
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Re: New exhaust, should I keep it before rear tires?
problem when you do that you ever have a engine going bad and you blow a engine some of that oil goes on your tires happy trails you ever try to stop on oily tires dose not work well done it on my roundy round car when i blow the eng i spun right into the wall
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#12 |
Registered User
Join Date: Sep 2014
Location: Texarkana, Texas
Posts: 9
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Re: New exhaust, should I keep it before rear tires?
I've always preferred to have the exhaust dumped on my trucks, it just seems to look cleaner to me.
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#13 |
Registered User
Join Date: Feb 2012
Location: Mission Viejo, CA
Posts: 1,856
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Re: New exhaust, should I keep it before rear tires?
i did in front of the wheels as well. because exhaust smoke and loudness is
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#14 |
Registered User
Join Date: Mar 2011
Location: Bandera, Texas
Posts: 251
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Re: New exhaust, should I keep it before rear tires?
I like to come straight out the back of the mufflers with 30 degree turn downs angled slightly outward. Nothing shows
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#15 |
Scrapper 1
Join Date: Jan 2007
Location: Riverside Calif
Posts: 1,649
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Re: New exhaust, should I keep it before rear tires?
all my truck will have it behind the back wheels with 40 inch glass packs see flow masters sound good but a glass pack never plugs up after the glass is gone it keeps on getting louder and with 40 inches it has a nice moan to it but when you chasing some one down they know your comming
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#16 |
Registered User
Join Date: Sep 2011
Location: Eau Claire, Wisconsin
Posts: 415
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Re: New exhaust, should I keep it before rear tires?
Thanks for your opinions guys. I think il try it in front of the rear tires again for now at least. im also just ordered an hipe. I do like the tucked up and under idea i just dont want to get in the way of the future rear mounted fuel tank. I cant wait to here this thing.
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1969 shortbed c/10 1998 GMC sierra |
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#17 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: New exhaust, should I keep it before rear tires?
What's so clean about pipes sticking out of the side? At least out back is where you expect to see exhaust. I think going with 3" you will want more length, not only for sound but for performance. You can tuck it up and leave it peeking out. I like the dump down from behind the quarter look that GM cars of this era had (and has been shown). You can do the same from behind the bumper straight out the back. Just keep the pipes under the frame or outside. All my systems are run with spare tire mount or on Blazers or Suburbans. Never an issue with the tank. Running to the rear of the truck is a complete exhaust system. Running out the side was always the cheap way to go and that's how I still see it. And I once went that route. And the blown engine dumping oil on tires is a true reality. Although, when oil comes direct from the block, all bids are off. It's just bad news for rear traction. Seen super nice trucks end up a pile of steel from that.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ Last edited by special-K; 03-16-2015 at 09:29 AM. |
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