2.5/4 ECE drop exhaust question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GlennBrittain · 11-05-2008, 11:20 PM

With the ECE 2.5/4 drop kit will I have clearance to run my exhaust under the truck or do I need to run it through the frame. I do not want to go through unless it is really necessary. I do not want to drag my exhaust every time I go over a speed bump or railroad track either.

chevydog66 · 11-06-2008, 12:04 AM

I have asked the same question. You would probably have better luck in the suspension section.

72BlckButy · 11-06-2008, 09:21 AM

I don't believe that a 2.5/4 drop would be low enough to cause to many serious issues.... your best option would be to call out to ECE and speak with Stan or any of the other guys there. They are filled with a ton of knowledge on the 67-72 trucks.

**John Fabris** · 11-06-2008, 09:38 AM

I am running thier 4/6 drop, and I don't have my exhaust running through the frame. I did use sanderson shorties, and have an H pipe, and exits at a 45 behind the rear tires....

I bottom out on my front a-arms but I have yet to hit the exhaust..

72BlckButy · 11-06-2008, 09:39 AM

Hey John.... do you have any pics of your exhaust setup?

whatnow123 · 11-06-2008, 10:40 AM

You'll be fine. I have a 4/6 drop with an X pipe and haven't dragged it yet.

GlennBrittain · 11-06-2008, 01:07 PM

Thanks all for the info. I did call ECE this morning. I was also advised to use short headers and tuck the pipes up tight and there would be no problems with clearance. I also asked about shock relocaters. ECE said that the truck would run down the road just fine but the ride would be degraded. I plan to order the relocaters today. I did not want to run my pipes through the frame since I would have to come out the sides anyway or go under the rear axle tubes due to my FUELCELLGUY rear tank.
I am trying to get everything off my frame that will not be used and all holes required drilled before powercoating. I will post another trhread on that issue.

race-n-jason · 11-06-2008, 01:29 PM

Currently I have a 3/5 spring drop using shorty headers and tucked tight to the frame. Here are a few pics to give you an idea of clearance...

JEG

gangforward · 11-06-2008, 01:36 PM

Here's a shot of mine - I used Hedman Long Tube headers for better performance, and I like having the headers somewhat visible... I have the 2x4 inch drop from early classic...

glock35ipsc · 11-06-2008, 02:22 PM

This is the way I use to have it on my 68. The only time it ever hit was when I took a speed bump waaay too fast.

GlennBrittain · 11-06-2008, 02:25 PM

Thanks for the pics, they always help.

72BlckButy · 11-06-2008, 03:33 PM

Glad to hear that ECE was able to help you out. And that's why I'm ordering a ton of parts from them... excellent customer service!

chevguy7 · 11-06-2008, 04:44 PM

You will be fine with a 2.5/4" drop and the exhaust not being tucked. ECE is great!

11-05-2008, 11:20 PM	#1
GlennBrittain Senior Member Join Date: Jun 2003 Location: Panola County Texas Posts: 401	2.5/4 ECE drop exhaust question With the ECE 2.5/4 drop kit will I have clearance to run my exhaust under the truck or do I need to run it through the frame. I do not want to go through unless it is really necessary. I do not want to drag my exhaust every time I go over a speed bump or railroad track either.

11-06-2008, 12:04 AM	#2
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Re: 2.5/4 ECE drop exhaust question I have asked the same question. You would probably have better luck in the suspension section. __________________ 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

11-06-2008, 09:21 AM	#3
72BlckButy Tot Roddin' Join Date: Apr 2005 Location: Mid-MO Posts: 24,461	Re: 2.5/4 ECE drop exhaust question I don't believe that a 2.5/4 drop would be low enough to cause to many serious issues.... your best option would be to call out to ECE and speak with Stan or any of the other guys there. They are filled with a ton of knowledge on the 67-72 trucks. __________________ -Nate 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package) Last edited by 72BlckButy; 11-06-2008 at 09:22 AM.

11-06-2008, 09:38 AM	#4
John Fabris TOTY 2006 Join Date: Dec 1999 Location: Magalia CA USA Posts: 2,270	Re: 2.5/4 ECE drop exhaust question I am running thier 4/6 drop, and I don't have my exhaust running through the frame. I did use sanderson shorties, and have an H pipe, and exits at a 45 behind the rear tires.... I bottom out on my front a-arms but I have yet to hit the exhaust.. __________________ John Fabris 67 C10 SWB

11-06-2008, 09:39 AM	#5
72BlckButy Tot Roddin' Join Date: Apr 2005 Location: Mid-MO Posts: 24,461	Re: 2.5/4 ECE drop exhaust question Hey John.... do you have any pics of your exhaust setup? __________________ -Nate 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package)

11-06-2008, 10:40 AM	#6
whatnow123 Registered User Join Date: Oct 2006 Location: Arizona Posts: 835	Re: 2.5/4 ECE drop exhaust question You'll be fine. I have a 4/6 drop with an X pipe and haven't dragged it yet. __________________ 67 Short Step, 355, 700R 4.11 posi rear, 4/6 drop Discs on all 4 corners. Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=219094

11-06-2008, 01:07 PM	#7
GlennBrittain Senior Member Join Date: Jun 2003 Location: Panola County Texas Posts: 401	Re: 2.5/4 ECE drop exhaust question Thanks all for the info. I did call ECE this morning. I was also advised to use short headers and tuck the pipes up tight and there would be no problems with clearance. I also asked about shock relocaters. ECE said that the truck would run down the road just fine but the ride would be degraded. I plan to order the relocaters today. I did not want to run my pipes through the frame since I would have to come out the sides anyway or go under the rear axle tubes due to my FUELCELLGUY rear tank. I am trying to get everything off my frame that will not be used and all holes required drilled before powercoating. I will post another trhread on that issue.

11-06-2008, 01:29 PM	#8
race-n-jason -Praise the Lowered- Join Date: Oct 2001 Location: Garland, Tx, USA Posts: 280	Re: 2.5/4 ECE drop exhaust question Currently I have a 3/5 spring drop using shorty headers and tucked tight to the frame. Here are a few pics to give you an idea of clearance... JEG Attached Images __________________ Race-N-Jason ('71 Chevy C-10 LWB 454/TH350) ('07 Dodge Ram 2500, 5.9 Cummins/6-speed Manual)

11-06-2008, 01:36 PM	#9
gangforward Hootis is as Hootis does... Join Date: Nov 2002 Location: Southern Georgia Posts: 500	Re: 2.5/4 ECE drop exhaust question Here's a shot of mine - I used Hedman Long Tube headers for better performance, and I like having the headers somewhat visible... I have the 2x4 inch drop from early classic... __________________ 67 C10 LWB Fleet, 383, TH400, PS, 4BL-Holley, Headers & 3" Exhaust, 3" drop front, 4" rear springs, ECI shock relocate, Panhard Bar kit, wheels & tires 1995 Z28 Convertible - Borla, K&N, Lingenfelter Motor, C6 Wheels & Tires 1990 2500 4x4 Suburban 3" Catbac System, K&N, 2" Lift, Wheels, Tires Last edited by gangforward; 11-06-2008 at 01:37 PM.

11-06-2008, 02:22 PM	#10
glock35ipsc Next project: 1970 K10 Join Date: Feb 2004 Location: Fort Collins, Colo 80524 Posts: 6,684	Re: 2.5/4 ECE drop exhaust question This is the way I use to have it on my 68. The only time it ever hit was when I took a speed bump waaay too fast. Attached Images __________________ *Bob* 1970 Chevy K10 LWB "Goldie" 350/TH350 *next project!!* 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE

11-06-2008, 02:25 PM	#11
GlennBrittain Senior Member Join Date: Jun 2003 Location: Panola County Texas Posts: 401	Re: 2.5/4 ECE drop exhaust question Thanks for the pics, they always help.

11-06-2008, 03:33 PM	#12
72BlckButy Tot Roddin' Join Date: Apr 2005 Location: Mid-MO Posts: 24,461	Re: 2.5/4 ECE drop exhaust question Glad to hear that ECE was able to help you out. And that's why I'm ordering a ton of parts from them... excellent customer service! __________________ -Nate 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package)

11-06-2008, 04:44 PM	#13
chevguy7 Registered User Join Date: Oct 2006 Location: Washington Posts: 316	Re: 2.5/4 ECE drop exhaust question You will be fine with a 2.5/4" drop and the exhaust not being tucked. ECE is great! __________________ 1970 C10 - ECE 3.5/5 drop, dual exhaust with turbo mufflers, front discs http://67-72chevytrucks.com/vboard/s...d.php?t=272458 2000 Buick Regal GS - Supercharged 3.8 V6 240hp, 1/4 mile 15 seconds



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