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Thread: Mustang shorties, H-pipe, flowmaster muffler dual exhaust install

  1. #1
    not embarrassed on a scooter 85crownHPP's Avatar
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    Thumbs up Mustang shorties, H-pipe, flowmaster muffler dual exhaust install

    I finally have all my pieces together... just need to cut the welded-in pieces out of the one muffler and then git r done!!!!

    This is stock shorties and off-road H-pipe (thanks Tiggie) stock replacement s-10 mids, used flowmasters, stock replacement Impala SS tails and some elbows and tips.
    I went with the stock replacement sizes since they were cheaper and I wont be making enough power anytime soon to need the larger diameter. Plus Im going to try to clamp everything so I can upgrade easily when needed.

    Ive almost spent as much on adapters/hangers/clamps/hardware/elbows/tips as I have on the main piping!!

    ... soon! ...
    Attached Thumbnails Attached Thumbnails DSCF3898s.jpg  

  2. #2
    The Brown Blob 87gtVIC's Avatar
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    Nice Pete, hopefully you get some more ponies out of it. And why in the hell are those clear lenses in pieces?
    ~David~

    My 1987 Crown Victoria Coupe: The Brown Blob
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    Quote Originally Posted by DerekTheGreat View Post
    But, that's just coming from me, this site's biggest pessimist. Best of luck

  3. #3
    not embarrassed on a scooter 85crownHPP's Avatar
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    Its common for the lens for the marker to fall off of those, especially if they fall off the shelf! A little clear silicone takes care for that...

    I know my current mufflers are at least a little clogged with rust flakes from the H-pipe, I can hear then rattle around when I hit it with a hammer.
    I hope it sounds good!

  4. #4
    ... mrltd's Avatar
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    Going for the wagon look huh?
    Builder/Owner of Badass Panther Wagons.


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  5. #5
    not embarrassed on a scooter 85crownHPP's Avatar
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    yup
    I figured that would be the cheapest way, plus your side exits are seksy
    Pus I wont have to worry about scraping the tips once the rear is back to normal ride height

  6. #6
    ... mrltd's Avatar
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    yup, shouldn't be a problem!

    I'm surprised the stockers were cheap, I think when I was looking em up the 2.5" were cheaper.
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    I post a lot... 88Vic's Avatar
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    Is this for the 85 or the 91? Shoot i've been gone so long I don't even know what you have or don't have anymore, for all I know the sig needs updating.

  8. #8
    Mazda5: the Anti-Van! 1987cp's Avatar
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    Quote Originally Posted by mrltd View Post
    I'm surprised the stockers were cheap, I think when I was looking em up the 2.5" were cheaper.
    Me too. Surprised he didn't choose stock Vic tailpipes anyway, I think they're cheaper still and sort of look stock and stuff.

    Are those S-10 midpipes the 2.25" Walker ones or the 2.5" Maremont?
    2012 Mazda5 Touring | Click below to buy my cool '81 LTD:

  9. #9
    whiskey runner murphmobile2's Avatar
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    You're gonna fall in love with it all over again.
    1984 Ford Crown Vic LTD, The Murphmobile (RIP)
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  10. #10
    Domestic Tourist Lincolnmania's Avatar
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    nice!......how much were the wagon tails petemang?

    1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
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  11. #11
    not embarrassed on a scooter 85crownHPP's Avatar
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    This is for the 85 of course... the 91 has been on driven-once-a-week organ donor status since the CFI conversion.

    Those arent waggin tails scott, those are the impala SS tails with elbows.

    I might have gotten cheaper prices if I shopped around, but I just bought what rock auto had to offer so I could pay with my paypal balance. The small impala tails were about 30 bucks each, the larger ones were 38 or so. IIRC the difference was similar with the s-10 mids. I probably should have just spent the extra loot and gotten the larger ones... oh well. I wont be needing them anytime soon.

    Stock box tailpipes are close enough to the price of the impala ones, and I wanted the 2" instead of the stock 1 7/8... plus side exits are the kewlest!!!!
    I actually could have probably re-used my stock tailpipes... oh well. Anyone wanna buy em at scottfest??

  12. #12
    GMN Founder Grand Marquis GT's Avatar
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    Gonna sound nice with those flowmasters
    1983 Grand Marquis 2Dr Sedan "Mercules"
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  13. #13
    The Brown Blob 87gtVIC's Avatar
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    We will both have dual exhaust now. The race will now be closer.
    ~David~

    My 1987 Crown Victoria Coupe: The Brown Blob
    My 2004 Mercedes Benz E320:The Benz

    Quote Originally Posted by DerekTheGreat View Post
    But, that's just coming from me, this site's biggest pessimist. Best of luck

  14. #14
    is fixin shit that's not broke hav24wheel's Avatar
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    Quote Originally Posted by 85crownHPP View Post
    Stock box tailpipes are close enough to the price of the impala ones, and I wanted the 2" instead of the stock 1 7/8...
    The stock tail pipes i got for my 83 are 2 inch. didn't even show a 1 7/8ths option in the book..
    03 7.3 F250 CCLB 35s 4.10s
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  15. #15
    not embarrassed on a scooter 85crownHPP's Avatar
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    2 inch inner or outer diameter?? It seems like different stores and brands list them differently... can be quite confusing... lol.
    Hopefully the Imalpa SS tails I bought are at least a size bigger than the stock option... I could have just cut my stockers off behind the wheels if not...

    Quote Originally Posted by 87gtVIC View Post
    We will both have dual exhaust now. The race will now be closer.
    It already has duals!!!
    minus two keen observer points for you!!!!!!!!
    Attached Thumbnails Attached Thumbnails DSCF1310s.jpg  

  16. #16
    The Brown Blob 87gtVIC's Avatar
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    Quote Originally Posted by 85crownHPP View Post
    It already has duals!!!
    minus two keen observer points for you!!!!!!!!
    :stfu1:
    ~David~

    My 1987 Crown Victoria Coupe: The Brown Blob
    My 2004 Mercedes Benz E320:The Benz

    Quote Originally Posted by DerekTheGreat View Post
    But, that's just coming from me, this site's biggest pessimist. Best of luck

  17. #17
    I post a lot... 88Vic's Avatar
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    Wait so you took the EFI from the 91 and CFI from the 85 and swapped fuel systems? That's awesome, when did you do that? Makes the 91 more of a beater now, don't feel so bad beating up on CFI.

  18. #18
    not embarrassed on a scooter 85crownHPP's Avatar
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    Naw the 91 wasn't actually a donor for the 85's swap, but I did convert it to 90-91 style fuel injection. I got all separate stuff for that. The 91 did make a handy reference though
    The 91 ran better and got better mileage when the 85 was CFI so I mostly drove it for around-town box-mood driving.... now it outruns the 91 and who cares what the mileage is!
    By organ donor status I was talking about engine/drivetrain stuff, in case I trash something on the 85

  19. #19
    is fixin shit that's not broke hav24wheel's Avatar
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    2 inch exhaust is measured as O.D. At least that's how all the strait tubing and prebent pipes we sell is measured. A 2 inch muffler is measured as I.D. So that way it will slip over a two inch pipe.
    03 7.3 F250 CCLB 35s 4.10s
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  20. #20
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    Quote Originally Posted by 85crownHPP View Post
    2 inch inner or outer diameter?? It seems like different stores and brands list them differently... can be quite confusing... lol.
    Petey, the issue with 2" (or any other pipe diameter) I.D. or O.D. is a matter of inlet size, and where the two sizes show up. Usually, I.D. only shows up concerning the inlet/outlet size of a muffler, catalytic convertor, or the case of generic replacement exhaust piping (like you find in auto parts stores, as a foot-long or two-foot-long stick, as an example). The generic exhaust pipe sticks you see on shelves usually have one end measured in O.D., and the other in I.D., so you can add that length to an existing exhaust system, usually straight into a muffler (although I've also seen them with double I.D. ends)...which is always sold with a specific inside diameter listing.

    Concerning the bulk exhaust tubing you find in exhaust shops....it's always sold in O.D. diameter increments.

    I've never seen the wagon exhaust over-the-axle pipes in anything other than 2" O.D....did you find something else?

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