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Thread: Under car exhaust

  1. #1
    Junior Member
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    Under car exhaust

    Is there enough clearance for a full under-car exhaust? Seems like a good way to prevent toasted ankles.

  2. #2
    Senior Member Todd Buttrick's Avatar
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    Give this search a try. Tons of great info.

  3. #3

    Steve >> aka: GoDadGo
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    Several fellows have done very nice under car exhaust systems and have done so using Spintech Low Profile mufflers:

    https://spintechmufflers.com/muffler...file-mufflers/

  4. #4
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    I did mine with spintech mufflers and oval pipe. With the new IRS it is nearly impossible to exit in the rear. Mine just exit in front of the rear tires.
    LS1, TKO600, IRS, no scoop, undercar exhaust. Delivered June 14, 2017, First start December 31, 2017, Registered and Titled Sept 12, 2019.

  5. #5
    Senior Member Duke's Avatar
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    Yup, there's room.

    Attached Images Attached Images

  6. #6
    Senior Member John4337's Avatar
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    I did mine with spin tech 7000 series mufflers and 2 1/4 inch pipe, went all the way out the back. Worked great

    John
    FFR #7388 - Mk 4 Complete Kit w/ IRS, Ordered 10/21/10, Delivered 12/8/10. 302 with FiTech and Under Car Exhaust, Heat & A/C, Rod Top. Hard top and shop built side curtains added 2023.

  7. #7

    Steve >> aka: GoDadGo
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    Isn't I Great When A Plan Comes Together?

    A Plan = Factory Five Forum Members

  8. #8
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    Maybe overkill or impossible, but could you run two smaller pipes down each side and a collector at the muffler? Maybe it would not help at all but it would seem to give more room underneath.
    Mk3.1 347 AFR 205cc Heads A9L EFI siemens deca 60lb injectors MSD 6AL ignition Vortech V-3 3 Link PS/PB

    -- If you can’t fix it with a hammer, you have an electrical problem ! —

  9. #9
    Senior Member John4337's Avatar
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    I think overkill, I’m using 2 1/4 round, and haven’t had any problems. It hangs just below the floorboards, maybe 3/16 clearance.
    FFR #7388 - Mk 4 Complete Kit w/ IRS, Ordered 10/21/10, Delivered 12/8/10. 302 with FiTech and Under Car Exhaust, Heat & A/C, Rod Top. Hard top and shop built side curtains added 2023.

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