Flowmaster SS Down Pipes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

54blackhornet · 05-09-2018, 03:51 PM

i would like to replace the single exhaust system on my 71 GMC and figured these would be a good starting point. Any input would be helpful, truck has leaf springs....thanks fellas

6T7 C10 · 05-09-2018, 08:28 PM

My brother has those on his 70 C10. It is a quality piece. You can you them as they are or as a foundation to an exhaust system. No really cheap but they work and fit really well.

54blackhornet · 05-10-2018, 07:27 PM

Help

DJ_Baar · 05-17-2018, 03:29 PM

I used them on my '67 Chevy C20. coming off the stock ram horns is tight and had to put heat tape on them since so close to starter for example. (See picture.) If I knew now what I didn't know then would have maybe gone to long tube headers. But then I wouldn't have all the other heat shields & misc. brackets replaced. I like how it all is turning-out & the 2.5 inch pipes look GREAT!

54blackhornet · 05-18-2018, 03:07 PM

DJ I would like to do a similar build like yours, can you tell me what mufflers you used. I wanted to exit behind the rear tires like factory, but that will have to wait...thanks jack

DJ_Baar · 05-18-2018, 04:12 PM

I used Cherry Bomb VORTEX (https://cherrybomb.com/project/vortex/)
You can get them with center or offset. I choose offset and they can be installed either direction.

I left exhaust in front of rear tires because of the coil spring set-up. Last exhaust was pinched when installed to rear.

I did turn the tips down though for better sound going down the road.

DJ

05-09-2018, 03:51 PM	#1
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,391	Flowmaster SS Down Pipes i would like to replace the single exhaust system on my 71 GMC and figured these would be a good starting point. Any input would be helpful, truck has leaf springs....thanks fellas Attached Images __________________ 71 C-20 07 Magnum RT AWD

05-09-2018, 08:28 PM	#2
6T7 C10 Registered User Join Date: Feb 2015 Location: TX Hill Country Posts: 150	Re: Flowmaster SS Down Pipes My brother has those on his 70 C10. It is a quality piece. You can you them as they are or as a foundation to an exhaust system. No really cheap but they work and fit really well.

05-10-2018, 07:27 PM	#3
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,391	Re: Flowmaster SS Down Pipes Help __________________ 71 C-20 07 Magnum RT AWD

05-17-2018, 03:29 PM	#4
DJ_Baar Registered User Join Date: Jul 2016 Location: New Orleans Posts: 362	Re: Flowmaster SS Down Pipes I used them on my '67 Chevy C20. coming off the stock ram horns is tight and had to put heat tape on them since so close to starter for example. (See picture.) If I knew now what I didn't know then would have maybe gone to long tube headers. But then I wouldn't have all the other heat shields & misc. brackets replaced. I like how it all is turning-out & the 2.5 inch pipes look GREAT! Attached Images

05-18-2018, 03:07 PM	#5
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,391	Re: Flowmaster SS Down Pipes DJ I would like to do a similar build like yours, can you tell me what mufflers you used. I wanted to exit behind the rear tires like factory, but that will have to wait...thanks jack __________________ 71 C-20 07 Magnum RT AWD

05-18-2018, 04:12 PM	#6
DJ_Baar Registered User Join Date: Jul 2016 Location: New Orleans Posts: 362	Re: Flowmaster SS Down Pipes I used Cherry Bomb VORTEX (https://cherrybomb.com/project/vortex/) You can get them with center or offset. I choose offset and they can be installed either direction. I left exhaust in front of rear tires because of the coil spring set-up. Last exhaust was pinched when installed to rear. I did turn the tips down though for better sound going down the road. DJ



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