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Exhaust Opinions

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by KRAZIE87K5, Aug 2, 2001.

  1. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    I am having exhaust pipes bent tomorrow for my Blazer. I have Summit racing catalytic convertors (since they are small) and Flowmaster 70 Series BBC II mufflers ($100 ea.!). The exhaust sounds good now, but I need to get the exhaust fumes out of the cab. Right now, the Flowmasters stop right where the frame begins to slope upwards to go over the rear axle.

    I was going to have the shop bend the pipes so they would point out the sides of the truck directly behind the wheels. No funky chrome tips or anything, just 2.5" pipes all the way out. I didn't want to send them straight out the back of the truck, fearing that I might mess with my departure angle... Anyhow, the truck has 6" susp. lift, and a 3" body lift. This makes it more difficult to place the tailpipes nicely (because they look like they were installed lower than they were supposed to).

    Sorry for the long post [​IMG] Suggestions anyone?

    Does anyone else smell BFGs burning???
    454/TH400/NP205 - 14BFF/D60/w/ 4.10s
    <a target="_blank" href=http://24.10.209.54/bigolk5.htm>http://24.10.209.54/bigolk5.htm</a> [​IMG]
     
  2. fr8train

    fr8train 1/2 ton status

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    Dont do the straight out the back thing unless you have a wing/deflector it will flow its way back into the cab even worse. I am going to have my pipes exit to the sides after the wheels with slashcut tips to keep the drag factor down.
     
  3. Seventy4Blazer

    Seventy4Blazer 3/4 ton status

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    have them come off at a small angle. if you dont want fumes the best place is the rear corners at a 45 degree angle. also make sure the pipes have a 35 or so degree cut at the end to point the exaust a bit downward. you could have them bent to make it look like they are under the body as if it was not lifter, or you could go over the frame and then they would look stock height. but i would just go with 2 bends to make it at the right height personaly.
    Grant

    1974 Chevy Blazer Cheyanne. lots of plans for it....
    but it is on 33's now, with saggy old springs. i am in so cali if ya got any parts for me.
     
  4. Rockjunkies

    Rockjunkies 1/2 ton status

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    I like the way the exhaust fumes make me feel! All happy and all!!!!!

    Keep it simple!
     
  5. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    I can't imagine that I could keep the exhaust out if the truck at all! When standing behind the truck, the exhaust from the big block is so strong that you feel the air rushing to exit the rear of the truck no matter where you are behind the bumper.

    I don't know if routing it over the frame rails is a good idea either, since I HATE rattles... My truck is pretty much quiet when I drive it, none of the normal rattles and bumps are there anymore. My goal is to hunt them down and eliminate them all!

    Anyone have pics of their exhaust set up? Post tonight, as I have an appointment at 8AM! Thanks all!

    Does anyone else smell BFGs burning???
    454/TH400/NP205 - 14BFF/D60/w/ 4.10s
    <a target="_blank" href=http://24.10.209.54/bigolk5.htm>http://24.10.209.54/bigolk5.htm</a> [​IMG]
     
  6. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    The fumes off the 454 are stong enough to make my eyes water the entire time I drive it, if the rear window is dropped! I can't wait to be able to drive around with the rear glass dropped again! For now it will stay up so I don't pass out and wreck the truck!

    Does anyone else smell BFGs burning???
    454/TH400/NP205 - 14BFF/D60/w/ 4.10s
    <a target="_blank" href=http://24.10.209.54/bigolk5.htm>http://24.10.209.54/bigolk5.htm</a> [​IMG]
     
  7. Rockjunkies

    Rockjunkies 1/2 ton status

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    I simply cut my Cat Converter off and stuck a single flow there with a dump right after. It is real short, tucked up in the body really good, you can't even see the muffler hanging below the frame. But like I said, it's exhausting!!!!!!!!

    Keep it simple!
     

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