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  1. #1
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    Adam
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    Default Making a custom exhaust

    I'm looking at making a custom exhaust off my Ypipe. Thinking of a single 3.5" over the axle to a spintech muffler, with a hidden 3.5" single exit dumped by the bumper. Anyone know about how much pipe, more specifically what bends, I'll need? I was thinking a 45* and two 90* to the muffler, then just a single 90* out of the muffler.

    Thanks

  2. #2
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    It'd probably be more cost effective to just buy a mufflex 3.5" single and it'll most likely fit better.

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    1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot
    1994 Camaro Vert - SBE LE1 Summit 8802 Cam - The Cruiser
    The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E/Holley Terminator EFI
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  3. #3
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    Default

    Quote Originally Posted by SSlowBoat View Post
    It'd probably be more cost effective to just buy a mufflex 3.5" single and it'll most likely fit better.

    Sent from my SAMSUNG-SM-G900A using Tapatalk

    I agree, prebent will probably be the less grief. You could also try mimicking the bends of a stock exhaust or another option is dumping it before the rear.

    1994 Trans Am Under the knife - but it's alive!!! (5.3 LM7/CPT 60e/QP 9") BUILD THREAD
    2009 G8 GXP M6, full exhaust, catch can, cai, stereo
    1975 Olds 98 455 burnout machine/panty dropper | 1985 C10 new project

  4. #4
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    Default

    Quote Originally Posted by SSlowBoat View Post
    It'd probably be more cost effective to just buy a mufflex 3.5" single and it'll most likely fit better.
    This I built my own Y and 3.5 exhaust guarantee the mufflex was cheaper plus the aggravation of doing it. If your really set on doing it I could probably dig up a parts list of the bends I used.
    Last edited by mikey4play; 09-21-2015 at 03:17 PM.
    97 Z/28 58,000 miles.. M6, C5 ZO6 wheels and brakes, UMI LCA, PHB & TA, LPP headers, Custom 3.5 exhaust with Magnaflow muffler, LE2 heads, Intake 227/235 cam, 58mm TB, 36lbs. injectors, Pro Magnum 1.6, Meziere water pump, Crown Vic 8.8 w/4.10 gears

  5. #5

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    I built a custom 3" true dual over the axle setup for my car. It's a colossal pain. Save yourself the grief and get the Mufflex kit. I'm still not 100% happy with mine, mostly ground clearance. The sound is wicked though.

  6. #6
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    Default

    The only reason I haven't bought the Mufflex is because I really want stainless.

  7. #7
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    Quote Originally Posted by LT1BADZ View Post
    The only reason I haven't bought the Mufflex is because I really want stainless.
    Order one from them in stainless? Honestly unless ur going for show car shine underneath I don't see the point. I had a used by 4 different cars loudmouth that was still solid after being driven in jersey salt for over 10 years.

    Sent from my SAMSUNG-SM-G900A using Tapatalk
    1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot
    1994 Camaro Vert - SBE LE1 Summit 8802 Cam - The Cruiser
    The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E/Holley Terminator EFI
    10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!

  8. #8

    Default

    Quote Originally Posted by SSlowBoat View Post
    Order one from them in stainless? Honestly unless ur going for show car shine underneath I don't see the point. I had a used by 4 different cars loudmouth that was still solid after being driven in jersey salt for over 10 years.

    Sent from my SAMSUNG-SM-G900A using Tapatalk
    Ehhhh, thats a hit or miss. I have seen some horrible rusting of regular steel exhaust from other local cars.

    If you got the means and money, go for SS it will last longer.
    Correlation does not imply causation.

    Una salus victis nullam sperare salutem

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  10. #9
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    Default

    Quote Originally Posted by SSlowBoat View Post
    Order one from them in stainless? Honestly unless ur going for show car shine underneath I don't see the point. I had a used by 4 different cars loudmouth that was still solid after being driven in jersey salt for over 10 years.
    Loudmouth is stainless, so that doesn't really help your point.
    1997 Pontiac Trans Am WS6 clone | Build Thread | - just needs paint!
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