Guys with C or step notches, how are you running your exhaust? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevydog66 · 04-06-2008, 05:21 AM

I just installed the 2.5" S/S Magnaflow kit on my 72 and am not happy with the amount of clearance above the rear axle. I am planning on installing a C notch, and am wanting to know how you guys route the exhaust over the rearend? Any pics?

jlaird · 04-06-2008, 02:27 PM

i'm pretty sure there is a thread with pics asking this same question. Try a search. I'm going to dump mine before the axle. Here is one pic I had of someone elses.

jlaird · 04-06-2008, 02:28 PM

another:

flamingbig10 · 04-07-2008, 07:25 AM

in my opion, the simple solution would be to cut the pipe of at the muffler and run turn downs, if you dont mind the rumble, and noise in the cab

IvelDesigns · 04-07-2008, 08:39 AM

not a great shot, but here's how i had mine run:

http://67-72chevytrucks.com/vboard/a...1&d=1183125273

chevydog66 · 04-08-2008, 05:53 PM

I'm not a fan of the turndowns in front of the rear axle, I had that on my 66 Chevelle, and it would kick up dust all the time.

jlaird · 04-08-2008, 07:25 PM

Quote:

Originally Posted by chevydog66

I'm not a fan of the turndowns in front of the rear axle, I had that on my 66 Chevelle, and it would kick up dust all the time.

never thought of that. Turning them sideways should take care of that??

JayG · 04-08-2008, 08:04 PM

I run turn downs. Between the 25 gal fuel cell, air bags, sway bar there's not alot of room. They are a bit noisey. I must admit, I haven't spent alot of time looking for a path to the back.

hotrodhomi · 04-08-2008, 09:05 PM

I run mine out the back and exit under the rear bumper. I have air bags, gas tank and a watts link out back. No exhaust clearance issues.

jlaird · 04-09-2008, 12:46 AM

Quote:

Originally Posted by JayG

I run turn downs. Between the 25 gal fuel cell, air bags, sway bar there's not alot of room. They are a bit noisey. I must admit, I haven't spent alot of time looking for a path to the back.

Jay,

Do you think a "quieter" muffler would help or is the noise just a factor of the pipes being so short? Also, would the location of the muffler make a difference?

XXL · 04-09-2008, 03:34 AM

Quote:

Originally Posted by hotrodhomi

I run mine out the back and exit under the rear bumper. I have air bags, gas tank and a watts link out back. No exhaust clearance issues.

This is problematic for those who are setting their bumpers on the ground.

chevydog66 · 04-09-2008, 06:31 AM

Quote:

Originally Posted by jlaird

another:

Did you have a local exhaust shop bend that up for ya?

chevydog66 · 04-09-2008, 06:32 AM

Quote:

Originally Posted by hotrodhomi

I run mine out the back and exit under the rear bumper. I have air bags, gas tank and a watts link out back. No exhaust clearance issues.

Do you have any pics? Did a local shop bend it up for ya?

hotrodhomi · 04-09-2008, 08:01 AM

Quote:

Originally Posted by chevydog66

Do you have any pics? Did a local shop bend it up for ya?

I don't have any pics now, maybe this weekend. I have a local shop build if for me. I just told them that I needed clearance and they made it happen.

jlaird · 04-09-2008, 02:01 PM

Quote:

Originally Posted by chevydog66

Did you have a local exhaust shop bend that up for ya?

not mine. I wish i was at that point

tds · 04-09-2008, 03:51 PM

mine isn't done yet but i'm gonna run dual flowmaster and then just dump it before the axle. i want people to hear my exhaust but not see it.

hotrodhomi · 04-09-2008, 04:03 PM

Quote:

Originally Posted by XXL

This is problematic for those who are setting their bumpers on the ground.

But not for people who only have C notchs like he asked about.

72BlckButy · 04-09-2008, 09:29 PM

Quote:

Originally Posted by jlaird

never thought of that. Turning them sideways should take care of that??

That's what a buddy up mine did, he angled the turndowns and that made a world of difference inside the cab.

Frizzle Fry · 07-18-2008, 05:32 PM

Just got mine mocked up, still need to relocate the shocks under the bridge:

More pics in my build thread

**scotts62** · 07-18-2008, 11:34 PM

wow looks good frizzle, hey did you have yours mandrel bent or did you just use a bender and make the smooth bends?? Because they dont look pinched as they say from the hydrolic benders.

yea that would be the goal if you are bagged is to try and run as far back as possible without getting the way or mashing something

if they are before the rearend better to turn them a lil sidways and out, or on long cruises down they highway ears tend to hum for a while

Frizzle Fry · 07-19-2008, 05:36 AM

It's a U-Fit 3" mandrel kit from Flowmaster (purchased through Summit). Nice quality from them as usual, but I did end up buying two more of the S-Bends directly from Flowmaster to make it up/over the trailing arms right behind the TA xmember.

I had side exits in front of the rear tires with 40 series flows, 2.5", and no H pipe before. Now it 3", all the way back, 50 series flows, and I'll be installing an H, so it should give it a completely different sound. I'm expecting it to be deeper, but not quite as loud, with less interior resonance. Can't wait to fire it!

chevydog66 · 07-19-2008, 12:03 PM

Looks good Frizzle!!

stepside454 · 07-19-2008, 12:15 PM

Im "C" notched, heres what I did for room

04-06-2008, 05:21 AM	#1
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Guys with C or step notches, how are you running your exhaust? I just installed the 2.5" S/S Magnaflow kit on my 72 and am not happy with the amount of clearance above the rear axle. I am planning on installing a C notch, and am wanting to know how you guys route the exhaust over the rearend? Any pics? __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up

04-06-2008, 02:27 PM	#2
jlaird Senior Member Join Date: May 2004 Location: johnstown, NY Posts: 2,393	Re: Guys with C or step notches, how are you running your exhaust? i'm pretty sure there is a thread with pics asking this same question. Try a search. I'm going to dump mine before the axle. Here is one pic I had of someone elses. Attached Images

04-06-2008, 02:28 PM	#3
jlaird Senior Member Join Date: May 2004 Location: johnstown, NY Posts: 2,393	Re: Guys with C or step notches, how are you running your exhaust? another: Attached Images

04-07-2008, 07:25 AM	#4
flamingbig10 6.0 powered square Join Date: Feb 2008 Location: Mesquite texas Posts: 3,459	Re: Guys with C or step notches, how are you running your exhaust? in my opion, the simple solution would be to cut the pipe of at the muffler and run turn downs, if you dont mind the rumble, and noise in the cab __________________ Aaron 1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326

04-07-2008, 08:39 AM	#5
IvelDesigns Commander Taco Bello Join Date: Sep 2006 Location: Des Moines, Iowa Posts: 2,232	Re: Guys with C or step notches, how are you running your exhaust? not a great shot, but here's how i had mine run: http://67-72chevytrucks.com/vboard/a...1&d=1183125273 __________________ Bagged '50 3600 - Bumper punchin' road kill since 2009... Bagged '69 C10 Longbed - Bumper punchin' road kill since 2007...

04-08-2008, 05:53 PM	#6
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Re: Guys with C or step notches, how are you running your exhaust? I'm not a fan of the turndowns in front of the rear axle, I had that on my 66 Chevelle, and it would kick up dust all the time. __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up

04-08-2008, 08:04 PM	#8
JayG Formerly ADHDCARGUY Join Date: Mar 2005 Location: DUNCANVILLE, TX Posts: 1,213	Re: Guys with C or step notches, how are you running your exhaust? I run turn downs. Between the 25 gal fuel cell, air bags, sway bar there's not alot of room. They are a bit noisey. I must admit, I haven't spent alot of time looking for a path to the back. __________________ Jay 67CHEVY SWB,355, built 700r, 5/7,9",posi 3.50,REAR BAGS,HOOSIERS, A/C. 54CHEVY - BURB, beginning construction(well, i gotta take it apart first!) 36FORD PU - WAITING 38CHEVY - 2DR SD,CHASSIS FINISHED 46CHEVY - BURB - waiting

04-08-2008, 09:05 PM	#9
hotrodhomi Registered User Join Date: Apr 2004 Location: Sacramento Posts: 3,737	Re: Guys with C or step notches, how are you running your exhaust? I run mine out the back and exit under the rear bumper. I have air bags, gas tank and a watts link out back. No exhaust clearance issues. __________________ '72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht

04-09-2008, 03:51 PM	#16
tds Registered User Join Date: Jul 2007 Location: minnesota Posts: 191	Re: Guys with C or step notches, how are you running your exhaust? mine isn't done yet but i'm gonna run dual flowmaster and then just dump it before the axle. i want people to hear my exhaust but not see it. __________________ 1981 - C-10 SCSB Planning on putting this thing on it's rocker!

07-18-2008, 05:32 PM	#19
Frizzle Fry Registered User Join Date: Aug 2005 Location: Hillsboro Oregon Posts: 6,449	Re: Guys with C or step notches, how are you running your exhaust? Just got mine mocked up, still need to relocate the shocks under the bridge: More pics in my build thread

07-18-2008, 11:34 PM	#20
scotts62 One day... Join Date: Apr 2008 Location: Tuttle, Ok Posts: 9,243	Re: Guys with C or step notches, how are you running your exhaust? wow looks good frizzle, hey did you have yours mandrel bent or did you just use a bender and make the smooth bends?? Because they dont look pinched as they say from the hydrolic benders. yea that would be the goal if you are bagged is to try and run as far back as possible without getting the way or mashing something if they are before the rearend better to turn them a lil sidways and out, or on long cruises down they highway ears tend to hum for a while __________________ Scott 93 crew cab build Project 62 Last edited by scotts62; 07-18-2008 at 11:37 PM.

07-19-2008, 05:36 AM	#21
Frizzle Fry Registered User Join Date: Aug 2005 Location: Hillsboro Oregon Posts: 6,449	Re: Guys with C or step notches, how are you running your exhaust? It's a U-Fit 3" mandrel kit from Flowmaster (purchased through Summit). Nice quality from them as usual, but I did end up buying two more of the S-Bends directly from Flowmaster to make it up/over the trailing arms right behind the TA xmember. I had side exits in front of the rear tires with 40 series flows, 2.5", and no H pipe before. Now it 3", all the way back, 50 series flows, and I'll be installing an H, so it should give it a completely different sound. I'm expecting it to be deeper, but not quite as loud, with less interior resonance. Can't wait to fire it!

07-19-2008, 12:03 PM	#22
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Re: Guys with C or step notches, how are you running your exhaust? Looks good Frizzle!! __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up

07-19-2008, 12:15 PM	#23
stepside454 Registered User Join Date: Nov 2003 Location: st. louis area Posts: 1,551	Re: Guys with C or step notches, how are you running your exhaust? Im "C" notched, heres what I did for room Attached Images __________________ 75 GMC C-15 short/step factory 454, lowered



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.