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#1 |
Registered User
Join Date: Mar 2021
Location: Hershey Pennsylvania
Posts: 335
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66 exhaust routing
Just recently finished a motor and tranny swap along with extensive cab floor repair on my c10 and as always there's more to be done. I ran the exhaust with Thrush glasspacks and while they were suitable in my teen years I want it quieter now. Right now they dump in front of the rear tires and I'd really like the new setup with turbo mufflers to exit straight out back. Problem is with this being lowered about 3", on the driver side the panhard bar is in the way. I was wondering if the mount for the bar on the frame could be modified to raise or lower it two inches to give me a clear shot. Making a new mount is no problem but I don't know if there's some geometry I'm overlooking as to why this may or may not be a good idea. If this can't be done I'll have to cross over the diff and take the pipes to the outside of the frame.
Umm editor if you could please give me a flip thx |
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#2 |
Senior Member
![]() Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,736
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Re: 66 exhaust routing
How is the spacing from front to back? Enough to bring the exhaust pipe straight down between the axle and panhard bar? I can't tell from your picture looking straight at the back if the bar sticks out far enough from the axle like mine does.
Just lowering should not affect how the exhaust routes because it would have been routed to avoid the axle or panhard bar from hitting the exhaust when driving over a large bump with stock suspension when the axle can move all the way up to the rubber bumper on the frame. If you must, it should be harmless to re-work the panhard bar in some way because all it does is keep the axle from moving side to side. Last edited by dmjlambert; Yesterday at 02:14 PM. |
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#3 |
Registered User
Join Date: Feb 2013
Location: central California
Posts: 2,741
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Re: 66 exhaust routing
I went outside the frame. It worked well because my gas tank is right there in the middle anyhow.
Perhaps the side exit may still be fine if you had a quieter muffler though. I just sold a truck having before the tire exits. I'm not into exhaust noise at all so i had added resonators to each pipe. It was nice and quiet with that arrangement. |
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#4 | |
Registered User
Join Date: Mar 2021
Location: Hershey Pennsylvania
Posts: 335
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Re: 66 exhaust routing
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#5 |
Senior Member
![]() Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,736
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Re: 66 exhaust routing
Just route the exhaust over the axle on the passenger side where there's plenty of room. Your panhard bar doesn't go all the way across the truck like mine does. If dual exhaust, just run both pipes next to each other until after the differential and panhard bar.
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#6 | |
Registered User
Join Date: Mar 2021
Location: Hershey Pennsylvania
Posts: 335
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Re: 66 exhaust routing
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#7 |
Registered User
Join Date: Jan 2023
Location: Johannesburg South africa.
Posts: 77
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Re: 66 exhaust routing
I have a 455 pontiac in my 63, 2.5" pipes and going outside of the frame, one straight thru big size glass packed muffler, and dumps about 6" before the rear wheels, it is actually not loud, good sound just sounds a bit wonky as i must still add a crossover tube.
Could run it the same and add more mufflers or just extend pipes on outside of frame. Depending your wheel size it should fit. Will add some pics i took from internet.. not my truck but neatly done. Cheers. Adriaan. |
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#8 |
Junior Member
![]() Join Date: Mar 2022
Location: Hinesburg Vermont
Posts: 75
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Re: 66 exhaust routing
With a rear tank, lowered and wanting a rear-exit, it was a challenge. Add to that wanting a relatively quiet truck.
I have an LS, Speed Engineering headers, to 8” Flowmaster universal cats, then a 2.5” stainless system from there. The pipes were a kit, and elbows/45’s etc from Amazon that I cut & welded sections together to route accordingly. The mufflers were Jones Exhaust from summit which I LOVE. They are super quiet at idle, have a nice tone going down the road with zero drone, but blatt loudly at WOT. Fabbing all this up was a challenge but I’m very pleased with the result. |
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#9 | |
Registered User
Join Date: Feb 2022
Location: Woodbine MD
Posts: 139
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Re: 66 exhaust routing
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#10 | |
Junior Member
![]() Join Date: Mar 2022
Location: Hinesburg Vermont
Posts: 75
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Re: 66 exhaust routing
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Yes, there are a lot of added degrees of resistance with all the bends….and I’m sure the theorists decree I’ve lost HP, but that wasn’t the goal. Goal was quiet-ish, rear-dump behind the rear tires, and no smell (hence the cats). All three boxes were checked with this setup. |
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