exhaust clearance lowered trucks - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevyhouse · 01-28-2003, 06:12 AM

has anybody ran exhaust inside the framerails? is that even a safe/smart thing to do? i would like to go though the hanger bearing crossmember instead of under it. has anybody done this or what can be done for clearance on lowered trucks.

Reumster · 01-28-2003, 09:39 AM

Many people do it. You must cut 4" holes out of the crossmember, I recommend welding in a 1 1/2" thick piece of 4" pipe. You also need shorty headers.

**1971Stepside** · 01-28-2003, 10:43 AM

Here is what I did to my frame to route the exhaust. There are many of us that have done this. If you want to see it with exhaust actually routed check out Slammed67's web site. I used 4" pipe cut at 1/2" thick. We cut the frame with a sawsall and welded them in. You can also check out Early Classics Web site as they did this mod to Dave's 68.

**1971Stepside** · 01-28-2003, 10:46 AM

angle

ChevLoRay · 01-28-2003, 11:37 AM

Boy, your shop looks nice! If having a painted floor makes it easier to work on your truck, I should put that task on my list of things to do, BEFORE I start on my truck (which I have now parked to begin the off-the-frame restification.

HotRod929 · 01-28-2003, 11:48 AM

How low can you go with long tube headers and it exiting out behind the rear wheels? I was thinking a 3/6 or 3/5 drop for my 70 C20...will I have problems with that?

HotRod

**1971Stepside** · 01-28-2003, 12:02 PM

ChevLoRay, I wish I had a shop but that is just my two car garage that my wife also wedges her mini van into every night! I painted the floor and the stuff is great to clean up oil or other spills. Make sure you get the oil based stuff as the water based stuff sucks.

HotRod, you should have no trouble with a 3/6 or 3/5 drop. You probably wouldn't want to do this, but there is very minimal cost in doing it.

Castiron9 · 01-28-2003, 02:32 PM

Oh man That looks nice and very organized..............Some day.............

GloryHound · 01-28-2003, 03:44 PM

Has any buddy tried stacks inorder to eliminate the clearance problems with the rear axle? I'm looking into this I'm just not sure how it will look on a fleet side! Another Idea I'm considering is putting a second floor in at wheel well height and using the area inbetween for running pipes and wiring if need be!

XXL · 01-28-2003, 05:15 PM

Quote:

Originally posted by GloryHound
Has any buddy tried stacks inorder to eliminate the clearance problems with the rear axle? I'm looking into this I'm just not sure how it will look on a fleet side!

Well, I'm picturing something like this, only with a truck...

Kenneth

crazy longhorn · 01-28-2003, 05:33 PM

Wow thats cool XXL

I think a set of stacks would look good on a flatbed, or even on a stepside.....but I think they would look out of place on a fleetside truck....crazyL

HotRod929 · 01-28-2003, 06:22 PM

I wonder how those stacks would look as side pipes on a fleetside? Kinda like the way corvetts had em you know...under the door.

HotRod

01-28-2003, 06:12 AM	#1
chevyhouse BEER-Vacation in a can... Join Date: Jun 2001 Location: wichita, ks Posts: 444	exhaust clearance lowered trucks has anybody ran exhaust inside the framerails? is that even a safe/smart thing to do? i would like to go though the hanger bearing crossmember instead of under it. has anybody done this or what can be done for clearance on lowered trucks. __________________ Kurt 03' Trailblazer 69' C10 "SPSHL-K", 388 stroker/BTO 700R4, 2400 stall, 3.73 posi, lwb, fleetside long box, 3.5"/5" drop, 18" Budnik 2000 Yamaha V-Star 1100 Custom For Sale-87' V10-4x4, 408/700r4, 4.10's PM for pics

01-28-2003, 09:39 AM	#2
Reumster L.E.D. Freak Join Date: Jan 2002 Location: Polson MT Posts: 1,358	Many people do it. You must cut 4" holes out of the crossmember, I recommend welding in a 1 1/2" thick piece of 4" pipe. You also need shorty headers. __________________ Specializing in Custom L.E.D. inserts. http://www.ccled.com/ Contact me @ blazer2wd1972@hotmail.com (406)675-8082 or Joel @ jmcwaters@eps-corp.net 1972 2wd Blazer, 350/700R4/3:73 posi, err & Custom L.E.D. inserts! LOL

01-28-2003, 10:43 AM	#3
1971Stepside Almost Satisfied Join Date: Mar 2002 Location: Springfield, MO Posts: 2,932	here is a pic Here is what I did to my frame to route the exhaust. There are many of us that have done this. If you want to see it with exhaust actually routed check out Slammed67's web site. I used 4" pipe cut at 1/2" thick. We cut the frame with a sawsall and welded them in. You can also check out Early Classics Web site as they did this mod to Dave's 68. Attached Images __________________ 1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021. "I can't complain, but sometimes I still do. Life's been good to me so far."

01-28-2003, 10:46 AM	#4
1971Stepside Almost Satisfied Join Date: Mar 2002 Location: Springfield, MO Posts: 2,932	a second angle Attached Images __________________ 1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021. "I can't complain, but sometimes I still do. Life's been good to me so far."

01-28-2003, 11:37 AM	#5
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	....71stepside..... Boy, your shop looks nice! If having a painted floor makes it easier to work on your truck, I should put that task on my list of things to do, BEFORE I start on my truck (which I have now parked to begin the off-the-frame restification. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

01-28-2003, 11:48 AM	#6
HotRod929 Registered User Join Date: Mar 2002 Location: Bondurant, IA but in Worcester, MA for school Posts: 767	How low can you go with long tube headers and it exiting out behind the rear wheels? I was thinking a 3/6 or 3/5 drop for my 70 C20...will I have problems with that? HotRod __________________ 1970 Chevy C-20 350 V-8 Turbo 350 w/ shift kit Dana 60 w/ 4.10 gears AND Powr-Loc POSI New Additions: Summit Headers 135amp alternator Proform HEI Edelbrock 1406 600cfm carb Sunpro Tach Powr-Loc POSI Edelbrock Performer RPM Intake MSD 6A Ignition Box AIM: HotRod929 Visit My Site: http://1970chevy.netfirms.com/

01-28-2003, 12:02 PM	#7
1971Stepside Almost Satisfied Join Date: Mar 2002 Location: Springfield, MO Posts: 2,932	ChevLoRay, I wish I had a shop but that is just my two car garage that my wife also wedges her mini van into every night! I painted the floor and the stuff is great to clean up oil or other spills. Make sure you get the oil based stuff as the water based stuff sucks. HotRod, you should have no trouble with a 3/6 or 3/5 drop. You probably wouldn't want to do this, but there is very minimal cost in doing it. __________________ 1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021. "I can't complain, but sometimes I still do. Life's been good to me so far."

01-28-2003, 02:32 PM	#8
Castiron9 72 LONGHORN OWNER Join Date: Sep 2002 Location: Seattle Wash. Posts: 963	Oh man That looks nice and very organized..............Some day.............

01-28-2003, 03:44 PM	#9
GloryHound Working on a Nova. Join Date: Nov 2002 Location: ## Posts: 506	Has any buddy tried stacks inorder to eliminate the clearance problems with the rear axle? I'm looking into this I'm just not sure how it will look on a fleet side! Another Idea I'm considering is putting a second floor in at wheel well height and using the area inbetween for running pipes and wiring if need be!

01-28-2003, 05:33 PM	#11
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	Wow thats cool XXL I think a set of stacks would look good on a flatbed, or even on a stepside.....but I think they would look out of place on a fleetside truck....crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

01-28-2003, 06:22 PM	#12
HotRod929 Registered User Join Date: Mar 2002 Location: Bondurant, IA but in Worcester, MA for school Posts: 767	I wonder how those stacks would look as side pipes on a fleetside? Kinda like the way corvetts had em you know...under the door. HotRod __________________ 1970 Chevy C-20 350 V-8 Turbo 350 w/ shift kit Dana 60 w/ 4.10 gears AND Powr-Loc POSI New Additions: Summit Headers 135amp alternator Proform HEI Edelbrock 1406 600cfm carb Sunpro Tach Powr-Loc POSI Edelbrock Performer RPM Intake MSD 6A Ignition Box AIM: HotRod929 Visit My Site: http://1970chevy.netfirms.com/

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