Stock 71 V8 Y Pipe Help ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

54blackhornet · 03-07-2020, 04:27 PM

Trying to fab up a exhaust to replace the original single exhaust system. Can anyone confirm the Outside diameter of the front Y pipe ? I can’t believe how difficult it is to replace such a basic system. I was quoted $800.00 by my only local shop...crazy

**dmjlambert** · 03-09-2020, 09:30 PM

I would also like to know about Y pipe options. Is a pre-made kit not available? I would like to get rid of my dual exhaust system and go with one muffler like it originally had.

71 super · 03-09-2020, 10:18 PM

Try walker brand, on my 71 small truck, I was able to buy the stock type y pipe through advance auto, and it was a much better price than you were quoted

**Joesjunk** · 03-10-2020, 08:19 AM

I believe the walker Y pipe has been discontinued, but I have a few at home And i can get you the part number to search.

54blackhornet · 03-10-2020, 11:52 AM

I have been trying to locate the Y pipe for a few weeks with no luck at all.

**Joesjunk** · 03-10-2020, 01:12 PM

Quote:

Originally Posted by 54blackhornet

I have been trying to locate the Y pipe for a few weeks with no luck at all.

I guess you have the part number then??

I might have an extra one I could sell? I’ll have to look

54blackhornet · 03-10-2020, 01:51 PM

Joe I don’t have a number just looking on the web?

**Joesjunk** · 03-10-2020, 10:35 PM

Quote:

Originally Posted by 54blackhornet

Joe I don’t have a number just looking on the web?

Here’s the walker part number 40346

I have bought Y pipes for my 4x4 71-72 trucks from Waldron exhaust. They make complete exhaust systems, or you can just order the y pipe. They have nice stuff.
http://www.waldronexhaust.com/

54blackhornet · 03-11-2020, 04:48 PM

Thanks Joe $415.00 for a complete single system...appreciate your help..Jack

**dmjlambert** · 03-11-2020, 06:53 PM

Please let us know if you get this and how does it work out for you. If you could give us pictures and how-to info right here it would be much appreciated. I am wondering if the system fits without a heat riser valve, or requires one, or is optional to fit either way. My truck used to have one, but it was removed and disposed of by the guy who installed my dual exhaust glass pack system.

**DA71Grande** · 03-11-2020, 09:05 PM

Looks like rock auto may have one of the Walker 40346

https://www.rockauto.com/en/parts/wa...346,pipe,10038

**Joesjunk** · 03-11-2020, 10:31 PM

Quote:

Originally Posted by 54blackhornet

Thanks Joe $415.00 for a complete single system...appreciate your help..Jack

Good deal, I haven’t bought the complete system before, but I might on my next K/20 im working on. All my trucks that came with single exhaust are getting correct exhaust systems

LostMy65 · 03-31-2020, 10:41 PM

Any updates?

LostMy65 · 03-31-2020, 10:55 PM

What about this one? : https://www.summitracing.com/parts/wlk-40295

LostMy65 · 03-31-2020, 11:41 PM

Is there a difference in the exhaust manifolds from 67-72?

54blackhornet · 04-01-2020, 04:25 PM

Guys I looked my original Y pipe over good and determined to reuse it. When the weather improves and this event passes I will have a local shop duplicate the rest....wishing everyone a healthy future
Jack

**dmjlambert** · 04-01-2020, 08:55 PM

If you're able I would love to see pictures as you go, and see how the pipe is routed. I am interested in going from dual exhaust to regular stock type setup with a single muffler. You'd probably have the first documented picture/how-to post anywhere of a single exhaust pipe on a V-8 on one of these trucks.

54blackhornet · 04-02-2020, 01:36 PM

I will post photos while the truck is at the exhaust shop. My original Y pipe was actually in pretty good condition so I just decided to keep it single.

Bearhawg · 07-07-2020, 02:32 PM

I would be very interested in pictures as well. My y-pipe exits the driver side. The passenger side down pipe routes around the starter and crosses over to meet the driver side down pipe. most of the pictures I've seen the driver side down pipe crosses over to meet the passenger side down pipe. I have a 350cid/TH350 if that makes a difference.

54blackhornet · 07-07-2020, 03:32 PM

Mine crosses over to the drivers side. I will try to get a photo. Rock auto did show they had it in stock

68Gold/white · 07-07-2020, 03:42 PM

It will make a difference if you have a standard trans or an automatic. Remember the cross members are different and in different places.

**FirstOwner69** · 07-07-2020, 06:32 PM

Quote:

Originally Posted by Bearhawg

I would be very interested in pictures as well. My y-pipe exits the driver side. The passenger side down pipe routes around the starter and crosses over to meet the driver side down pipe. most of the pictures I've seen the driver side down pipe crosses over to meet the passenger side down pipe. I have a 350cid/TH350 if that makes a difference.

This is how it looked originally.

03-07-2020, 04:27 PM	#1
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,406	Stock 71 V8 Y Pipe Help ? Trying to fab up a exhaust to replace the original single exhaust system. Can anyone confirm the Outside diameter of the front Y pipe ? I can’t believe how difficult it is to replace such a basic system. I was quoted $800.00 by my only local shop...crazy __________________ 71 C-20 07 Magnum RT AWD

03-09-2020, 09:30 PM	#2
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,923	Re: Stock 71 V8 Y Pipe Help ? I would also like to know about Y pipe options. Is a pre-made kit not available? I would like to get rid of my dual exhaust system and go with one muffler like it originally had.

03-09-2020, 10:18 PM	#3
71 super Registered User Join Date: Sep 2005 Location: Canton North carolina Posts: 3,080	Re: Stock 71 V8 Y Pipe Help ? Try walker brand, on my 71 small truck, I was able to buy the stock type y pipe through advance auto, and it was a much better price than you were quoted __________________ 67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle

03-10-2020, 08:19 AM	#4
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,715	Re: Stock 71 V8 Y Pipe Help ? I believe the walker Y pipe has been discontinued, but I have a few at home And i can get you the part number to search. __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

03-10-2020, 11:52 AM	#5
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,406	Re: Stock 71 V8 Y Pipe Help ? I have been trying to locate the Y pipe for a few weeks with no luck at all. __________________ 71 C-20 07 Magnum RT AWD

03-10-2020, 01:51 PM	#7
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,406	Re: Stock 71 V8 Y Pipe Help ? Joe I don’t have a number just looking on the web? __________________ 71 C-20 07 Magnum RT AWD

03-11-2020, 04:48 PM	#9
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,406	Re: Stock 71 V8 Y Pipe Help ? Thanks Joe $415.00 for a complete single system...appreciate your help..Jack __________________ 71 C-20 07 Magnum RT AWD

03-11-2020, 06:53 PM	#10
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,923	Re: Stock 71 V8 Y Pipe Help ? Please let us know if you get this and how does it work out for you. If you could give us pictures and how-to info right here it would be much appreciated. I am wondering if the system fits without a heat riser valve, or requires one, or is optional to fit either way. My truck used to have one, but it was removed and disposed of by the guy who installed my dual exhaust glass pack system.

03-11-2020, 09:05 PM	#11
DA71Grande Senior Member Join Date: Aug 2018 Location: Liberty Twp, Ohio Posts: 346	Re: Stock 71 V8 Y Pipe Help ? Looks like rock auto may have one of the Walker 40346 https://www.rockauto.com/en/parts/wa...346,pipe,10038 __________________ Doug 71 Sierra Grande C25 16 Sierra 2500HD All Terrain 23 Chevy Tahoe Z71 https://paypal.me/digdug7131?locale.x=en_US

03-31-2020, 10:41 PM	#13
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: Stock 71 V8 Y Pipe Help ? Any updates? __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

03-31-2020, 10:55 PM	#14
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: Stock 71 V8 Y Pipe Help ? What about this one? : https://www.summitracing.com/parts/wlk-40295 __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

03-31-2020, 11:41 PM	#15
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: Stock 71 V8 Y Pipe Help ? Is there a difference in the exhaust manifolds from 67-72? __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

04-01-2020, 04:25 PM	#16
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,406	Re: Stock 71 V8 Y Pipe Help ? Guys I looked my original Y pipe over good and determined to reuse it. When the weather improves and this event passes I will have a local shop duplicate the rest....wishing everyone a healthy future Jack __________________ 71 C-20 07 Magnum RT AWD

04-01-2020, 08:55 PM	#17
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,923	Re: Stock 71 V8 Y Pipe Help ? If you're able I would love to see pictures as you go, and see how the pipe is routed. I am interested in going from dual exhaust to regular stock type setup with a single muffler. You'd probably have the first documented picture/how-to post anywhere of a single exhaust pipe on a V-8 on one of these trucks.

04-02-2020, 01:36 PM	#18
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,406	Re: Stock 71 V8 Y Pipe Help ? I will post photos while the truck is at the exhaust shop. My original Y pipe was actually in pretty good condition so I just decided to keep it single. __________________ 71 C-20 07 Magnum RT AWD



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07-07-2020, 02:32 PM	#19
Bearhawg Registered User Join Date: Feb 2018 Location: Snellville GA Posts: 104	Re: Stock 71 V8 Y Pipe Help ? I would be very interested in pictures as well. My y-pipe exits the driver side. The passenger side down pipe routes around the starter and crosses over to meet the driver side down pipe. most of the pictures I've seen the driver side down pipe crosses over to meet the passenger side down pipe. I have a 350cid/TH350 if that makes a difference.

07-07-2020, 03:32 PM	#20
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,406	Re: Stock 71 V8 Y Pipe Help ? Mine crosses over to the drivers side. I will try to get a photo. Rock auto did show they had it in stock __________________ 71 C-20 07 Magnum RT AWD

07-07-2020, 03:42 PM	#21
68Gold/white Registered User Join Date: Sep 2011 Location: Ark City, Kansas Posts: 3,439	Re: Stock 71 V8 Y Pipe Help ? It will make a difference if you have a standard trans or an automatic. Remember the cross members are different and in different places.

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