anyone running duals on lowered blazer - The 1947 - Present Chevrolet & GMC Truck Message Board Network

blazer2007 · 03-15-2014, 11:24 AM

I have a 78 blazer and was wanting full exhaust but was wondering where to route the pipes after the rear end,does it go just under the frame rails ?I,ve been looking in town for a blazer to look at in town but not a one running around

blazer2007 · 03-15-2014, 11:25 AM

oops,It has been lowered abit with a flipped rear

classicchev · 03-15-2014, 11:48 AM

Air or static ? Either go under the diff, another option is through the frame rails and over the axel on the outside, join to be tight

Last one is to use oval pipe, I just bought a bunch of cool stuff from Spintech, 3 inch pipe squishes down real nice. Unless you are running a BBC, dual 3s will not be needed, 2.5 is ample and its under 2 inches in oval

blazer2007 · 03-16-2014, 10:39 AM

It,s bagged ,I know it going to be tight

classicchev · 03-16-2014, 12:34 PM

Im going out the side before the tire, too much stuff in the way around the diff.

Are you running stock leafs , tire widths ? What about going over the frame behind the rocker boxes then go beside the frame rails over the diff and out the back??

48cj2a · 03-29-2014, 12:23 PM

I've had true duals and have had them in front of the rear wheels (too loud with the windows down) straight out the back (fumes coming in when rear window down) and behind the rear wheels with 79 Trans-Am Dial tips which I liked the best.

BaggedRanger · 03-29-2014, 11:40 PM

Once mine is done it will have the dual exhaust again. There should be plenty of room to either dump it before the rear tires if you want or go all the way back. It all depends on how everything is setup in the rear on what you can do.. I think the biggest problem you would have woudl be the size of the muffler not the exhaust since that is going to be smaller than the muffler anyways.

Anything can be done.. Sometimes you just have to be a little creative..

blazer2007 · 03-30-2014, 11:21 AM

Well problem solved,I had some rust issues in the 4 corners so I decided to make a whole new floor and raise it 2 inchs or so.Now my pumkin won,t hit and I have room for a nice arch for pipes over the rear,down the framerails and out the back and over to the sides.It,s the big gas tank that makes it hard.That was easy wasn,t it LOL.Now the fun begines

03-15-2014, 11:24 AM	#1
blazer2007 Registered User Join Date: Jan 2007 Location: vernon b.c. Posts: 3,022	anyone running duals on lowered blazer I have a 78 blazer and was wanting full exhaust but was wondering where to route the pipes after the rear end,does it go just under the frame rails ?I,ve been looking in town for a blazer to look at in town but not a one running around

03-15-2014, 11:25 AM	#2
blazer2007 Registered User Join Date: Jan 2007 Location: vernon b.c. Posts: 3,022	Re: anyone running duals on lowered blazer oops,It has been lowered abit with a flipped rear

03-15-2014, 11:48 AM	#3
classicchev Senior Member Join Date: Nov 2003 Location: Calgary Alberta Posts: 1,936	Re: anyone running duals on lowered blazer Air or static ? Either go under the diff, another option is through the frame rails and over the axel on the outside, join to be tight Last one is to use oval pipe, I just bought a bunch of cool stuff from Spintech, 3 inch pipe squishes down real nice. Unless you are running a BBC, dual 3s will not be needed, 2.5 is ample and its under 2 inches in oval __________________ 67- 72 Parts collecter

03-16-2014, 10:39 AM	#4
blazer2007 Registered User Join Date: Jan 2007 Location: vernon b.c. Posts: 3,022	Re: anyone running duals on lowered blazer It,s bagged ,I know it going to be tight

03-16-2014, 12:34 PM	#5
classicchev Senior Member Join Date: Nov 2003 Location: Calgary Alberta Posts: 1,936	Re: anyone running duals on lowered blazer Im going out the side before the tire, too much stuff in the way around the diff. Are you running stock leafs , tire widths ? What about going over the frame behind the rocker boxes then go beside the frame rails over the diff and out the back?? __________________ 67- 72 Parts collecter

03-29-2014, 12:23 PM	#6
48cj2a Registered User Join Date: Feb 2010 Location: Central, IL Posts: 599	Re: anyone running duals on lowered blazer I've had true duals and have had them in front of the rear wheels (too loud with the windows down) straight out the back (fumes coming in when rear window down) and behind the rear wheels with 79 Trans-Am Dial tips which I liked the best. __________________ 03 Suburban Z71 Z71 98 GMC Yukon SLT 4x4 Yukon 86 M1009 CUCV Project Milverado 48 Willys CJ2A 48CJ2A

03-29-2014, 11:40 PM	#7
BaggedRanger Registered User Join Date: Feb 2012 Location: Sandy Eggo, CA Posts: 183	Re: anyone running duals on lowered blazer Once mine is done it will have the dual exhaust again. There should be plenty of room to either dump it before the rear tires if you want or go all the way back. It all depends on how everything is setup in the rear on what you can do.. I think the biggest problem you would have woudl be the size of the muffler not the exhaust since that is going to be smaller than the muffler anyways. Anything can be done.. Sometimes you just have to be a little creative..

03-30-2014, 11:21 AM	#8
blazer2007 Registered User Join Date: Jan 2007 Location: vernon b.c. Posts: 3,022	Re: anyone running duals on lowered blazer Well problem solved,I had some rust issues in the 4 corners so I decided to make a whole new floor and raise it 2 inchs or so.Now my pumkin won,t hit and I have room for a nice arch for pipes over the rear,down the framerails and out the back and over to the sides.It,s the big gas tank that makes it hard.That was easy wasn,t it LOL.Now the fun begines



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