Eexhaust With Underbed tank? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Striker169 · 12-26-2005, 11:09 PM

How is everyone running their exhaust with a under bed tank?

rkarr · 12-27-2005, 12:10 AM

I was thinking I'd route out before the rear tires... Or better still, I'd blast a hole in the bed and exit with a chrome ring around the exhaust tip...
Who has pics of headers for these 67-72's? I'm looking for good headers for a small block that don't drop below the frame...
~Russ

QKENUF4U · 12-27-2005, 12:31 AM

i have mine over the axle with a blazer tank conversion. works perfectly fine. just wish i had flowmasters on it instead of the dynomax (?) mufflers. it dumps right as it comes over the rear end. looks fine and works perfect.

prerunner68 · 12-27-2005, 12:44 AM

My exhaust stops just behind the cab and the fuel cell is behind 9" rear end.
The skid plate in the avatar hold the cell in.

subtle71 · 12-27-2005, 12:52 AM

Exhaust with the under bed tank should not be a problem. Here is a shot of mine, sorry it is not the best. The pipe loops up over the rear axle then flares towards the outside of the truck just in front of the tank. This shot only shows the driver's side but gives you an idea. Hope this helps.

Dean

Striker169 · 12-27-2005, 02:54 AM

that does help.. hmm I just gotta figure out how I want to go about doing this....

**special-K** · 12-27-2005, 07:12 AM

The same as I would on a Blazer or Suburban.Heat should not be a problem as long as you have air-space.

LUV2XCLR8 · 12-27-2005, 08:48 AM

Mine turns out in front of the rear tires, of course it's a blazer and not a
truck, but you get the idea, lots of pic's in my siggy link, pages 14-16 ?

stueber68 · 12-27-2005, 10:02 AM

I don't have pics of it but I saw a system that went through the frame rails. The owner boxed the frame in about a 8" section and then welding a 4" section of pipe at a 45 degree angle. Then he was able to run the exhaust out side the frame rails without going under them. Sounded really good.
I have the exhaust running out before the rear tires on mine at it is to loud in the cab for me. I like a loud exhast system and all I just want to be able to hear the radio too.

matthufham · 12-27-2005, 10:25 AM

mine go parallel with the frame, and 90 out in front of the rear tires. keep in mind if you have the poly version of the blazer tank, keep the exhaust pipes 3 inches away, if you're running the steel version, use an inch or so (you should be able to slide your hand through the gap)

modifiedGMC · 12-27-2005, 11:53 AM

I ran mine on the outside of the frame and then to the back. They turn out at a slight angle to the corners.

Putter · 12-27-2005, 12:02 PM

Here is how I have mine. Before and after the roll pan.....

**special-K** · 12-27-2005, 07:53 PM

And I like it.

mocwon · 12-27-2005, 11:48 PM

Didn't want to see the exhaust so it was up over the rear axle turned down about 3/4" from the bottom edge of the beside and about 1/2" below the bottom edge of the bedside. Leonard's on South 1st Street did it and did a very nice job....

QKENUF4U · 12-28-2005, 10:46 PM

heres mine.

need to get under there and repaint it i guess.

kaycee · 12-28-2005, 11:05 PM

Here's mine

70c10swb · 12-29-2005, 11:30 PM

Quote:

Originally Posted by kaycee

Here's mine

Perfect!

any pics from under?

kaycee · 12-30-2005, 12:14 AM

No pics from under side let me see if I can get some tomarrow ,and thank you for the compliment

matthufham · 12-28-2005, 11:22 PM

@QKENUF4U
you should turn those down, water will collect right there, and the fumes get stuck under the bed that way

matthufham · 12-28-2005, 11:30 PM

rick, that's the poly version of the blazer tank conversion kit. it comes in steel and poly, i have the poly one from gmcpauls.

12-26-2005, 11:09 PM	#1
Striker169 Car O'Holic Join Date: Jan 2005 Location: Austin, Tx. Posts: 692	Eexhaust With Underbed tank? How is everyone running their exhaust with a under bed tank?

12-27-2005, 12:10 AM	#2
rkarr Registered User Join Date: Sep 2005 Location: Roseville, CA Posts: 152	Re: Eexhaust With Underbed tank? I was thinking I'd route out before the rear tires... Or better still, I'd blast a hole in the bed and exit with a chrome ring around the exhaust tip... Who has pics of headers for these 67-72's? I'm looking for good headers for a small block that don't drop below the frame... ~Russ __________________ Avatar is a pic of "Before"... Just wait.. ---------------- 1969 Fleetside: Shortened frame for SWB, ECE 4-6 drop. ECE SS tank. All new ECE suspension. Rebuilt 12 bolt 3:73 with Eaton Posi. Front and rear disc brakes. Ramjet 350 and 700r-4 trans. 20" Centerline wheels with Kumho 295/45/20 tires (I hope they fit). Progress pics: http://s44.photobucket.com/albums/f2...uck/?start=all ---------------- Seriously... It's nothing a large dose of cash can't fix... Right? After all, I can't take it with me when I go... Just gotta have enough to get there!!!

12-27-2005, 12:31 AM	#3
QKENUF4U Senior Member Join Date: Jan 2005 Location: SUNNY WARM BIKE RIDING COTTONWOOD ARIZONA Posts: 2,097	Re: Eexhaust With Underbed tank? i have mine over the axle with a blazer tank conversion. works perfectly fine. just wish i had flowmasters on it instead of the dynomax (?) mufflers. it dumps right as it comes over the rear end. looks fine and works perfect.

12-27-2005, 12:44 AM	#4
prerunner68 Registered User Join Date: Jan 2001 Location: Westchester, Calif. USA Posts: 35	Re: Eexhaust With Underbed tank? My exhaust stops just behind the cab and the fuel cell is behind 9" rear end. The skid plate in the avatar hold the cell in. __________________ Now why, Would you cut up a 68 to go play in the desert with?? Last edited by prerunner68; 12-27-2005 at 12:46 AM.

12-27-2005, 12:52 AM	#5
subtle71 Granddad's Ol' Truck Join Date: Jan 2005 Location: MS Posts: 588	Re: Eexhaust With Underbed tank? Exhaust with the under bed tank should not be a problem. Here is a shot of mine, sorry it is not the best. The pipe loops up over the rear axle then flares towards the outside of the truck just in front of the tank. This shot only shows the driver's side but gives you an idea. Hope this helps. Dean Attached Images __________________ *1971 Chevrolet Custom 10 short step-side* *2005 GMC Sierra SLT 2500HD crew cab 2wd* [I]1971 Chevrolet Custom 10 Deluxe lwb fleet-side

12-27-2005, 02:54 AM	#6
Striker169 Car O'Holic Join Date: Jan 2005 Location: Austin, Tx. Posts: 692	Re: Eexhaust With Underbed tank? that does help.. hmm I just gotta figure out how I want to go about doing this....

12-27-2005, 07:12 AM	#7
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,852	Re: Eexhaust With Underbed tank? The same as I would on a Blazer or Suburban.Heat should not be a problem as long as you have air-space. __________________ "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 ~

12-27-2005, 08:48 AM	#8
LUV2XCLR8 The LuvShack Garage Join Date: Jan 2004 Location: Maple Grove, TN (West Side) Posts: 30,484	Re: Eexhaust With Underbed tank? Mine turns out in front of the rear tires, of course it's a blazer and not a truck, but you get the idea, lots of pic's in my siggy link, pages 14-16 ? __________________ Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Tow Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T

12-27-2005, 10:02 AM	#9
stueber68 1968 C20 Vortec Beast Join Date: Jun 2005 Location: STILLWATER,OKLAHOMA Posts: 483	Re: Eexhaust With Underbed tank? I don't have pics of it but I saw a system that went through the frame rails. The owner boxed the frame in about a 8" section and then welding a 4" section of pipe at a 45 degree angle. Then he was able to run the exhaust out side the frame rails without going under them. Sounded really good. I have the exhaust running out before the rear tires on mine at it is to loud in the cab for me. I like a loud exhast system and all I just want to be able to hear the radio too. __________________ Ugly or not it still kicks a**!

12-27-2005, 10:25 AM	#10
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	Re: Eexhaust With Underbed tank? mine go parallel with the frame, and 90 out in front of the rear tires. keep in mind if you have the poly version of the blazer tank, keep the exhaust pipes 3 inches away, if you're running the steel version, use an inch or so (you should be able to slide your hand through the gap)

12-27-2005, 11:53 AM	#11
modifiedGMC Registered User Join Date: Oct 2004 Location: Walker Co. Alabama Posts: 474	Re: Eexhaust With Underbed tank? I ran mine on the outside of the frame and then to the back. They turn out at a slight angle to the corners. __________________ If it don't fit, force it,...If it still don't fit , modify it 'till it does fit !!!

12-27-2005, 12:02 PM	#12
Putter More Cowbell.... Join Date: Mar 2004 Location: Puckett, MS Posts: 3,569	Re: Eexhaust With Underbed tank? Here is how I have mine. Before and after the roll pan..... Attached Images __________________ *There once was a member from Puckett.....Who ( fill in the blank blank blank* ) bucket**

12-27-2005, 07:53 PM	#13
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,852	Re: Eexhaust With Underbed tank? And I like it. __________________ "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 ~

12-27-2005, 11:48 PM	#14
mocwon Keep On Truckin' Join Date: Mar 2003 Location: Buda, Texas Posts: 1,354	Re: Eexhaust With Underbed tank? Didn't want to see the exhaust so it was up over the rear axle turned down about 3/4" from the bottom edge of the beside and about 1/2" below the bottom edge of the bedside. Leonard's on South 1st Street did it and did a very nice job.... __________________ Just Passin' Thru Some projects are like herding cats; others are like putting out fires; this one was like herding cats on fire.....

12-28-2005, 10:46 PM	#15
QKENUF4U Senior Member Join Date: Jan 2005 Location: SUNNY WARM BIKE RIDING COTTONWOOD ARIZONA Posts: 2,097	Re: Eexhaust With Underbed tank? heres mine. need to get under there and repaint it i guess. Attached Images



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12-28-2005, 11:05 PM	#16
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,446	Re: Eexhaust With Underbed tank? Here's mine Attached Images __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

12-30-2005, 12:14 AM	#18
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,446	Re: Eexhaust With Underbed tank? No pics from under side let me see if I can get some tomarrow ,and thank you for the compliment __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

12-28-2005, 11:22 PM	#19
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	Re: Eexhaust With Underbed tank? @QKENUF4U you should turn those down, water will collect right there, and the fumes get stuck under the bed that way

12-28-2005, 11:30 PM	#20
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	Re: Eexhaust With Underbed tank? rick, that's the poly version of the blazer tank conversion kit. it comes in steel and poly, i have the poly one from gmcpauls. Last edited by matthufham; 12-28-2005 at 11:32 PM.

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