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Installing shorties on 1994 K1500 TBI 350

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  • Installing shorties on 1994 K1500 TBI 350

    Guys, I ordered up a set of cheap shorty style headers for my K1500 the other day and they're due in tomorrow. Is there anything I should do while I have the manifolds/headers off?

    The o2 is a few months old so I'm just swapping that over. I plan on getting header wrap and wrapping them since they're just cheap black powder coated ones, not expensive stainless or ceramic coated. Can I wrap them after they're on or should I wait? I really want to get them on in the warm weather but by the time the wrap comes in, it'll be cold again. I plan on never seizing the bolts so they can easily be tightened in the future. Right now I'm going with the gaskets that are included but I suspect I'll need to go with copper gaskets eventually, though they do have 3/8" flanges.

    Opinions are appreciated.

  • #2
    Re: Installing shorties on 1994 K1500 TBI 350

    Spray the monifold and flange bolts with PB Blaster or something similiar to help on the removal.

    D/D-2006 HHR 1LT 5-Speed.
    1996 Silverado, 5.7, FIPKII, Elect Fans, S/S Headers, Duals, Wait4Me, 4/5 drop on 18" Weld Evo Velosity's. STOLEN ON 9/9/2006

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    • #3
      Re: Installing shorties on 1994 K1500 TBI 350

      Do NOT wrap them, they will rot out MUCH faster.
      2016 Carlisle All Truck Nats info..
      http://www.fullsizechevy.com/forum/o...g-5th-7th.html

      Comment


      • #4
        Re: Installing shorties on 1994 K1500 TBI 350

        If I don't wrap them, won't it be too hot under the hood (melting wires, etc)?

        Also, when you say they rot out quicker, do you mean months, years, several years? I'm only planning on keeping the truck 1-2 more years...if it means cooler under hood temps, is it worth doing even if they rot?

        The wrap I'm looking at has some preservative in the wrap to somehow seal the headers and keep them from rusting. Not sure if its a scam or what.

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        • #5
          Re: Installing shorties on 1994 K1500 TBI 350

          THE WRAP REALLY WON'T help underhood temps. that much. And the un-wrapped pipes won't melt anything.
          2016 Carlisle All Truck Nats info..
          http://www.fullsizechevy.com/forum/o...g-5th-7th.html

          Comment


          • #6
            Re: Installing shorties on 1994 K1500 TBI 350

            Originally posted by CKTA
            THE WRAP REALLY WON'T help underhood temps. that much. And the un-wrapped pipes won't melt anything.
            :word:

            Just keep the wires away from them.

            D/D-2006 HHR 1LT 5-Speed.
            1996 Silverado, 5.7, FIPKII, Elect Fans, S/S Headers, Duals, Wait4Me, 4/5 drop on 18" Weld Evo Velosity's. STOLEN ON 9/9/2006

            Comment


            • #7
              Re: Installing shorties on 1994 K1500 TBI 350

              You guys have been down that road so I appreciate you steering me away from crap thats useless. The wrap would have been $50 so I'll set that aside for a high flow cat or towards a new exhaust system to match the headers.

              Thanks!!!!

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              • #8
                Re: Installing shorties on 1994 K1500 TBI 350

                2016 Carlisle All Truck Nats info..
                http://www.fullsizechevy.com/forum/o...g-5th-7th.html

                Comment


                • #9
                  Re: Installing shorties on 1994 K1500 TBI 350

                  Hopefully you won't have to deal with it, but when I got my cheap shorties I ended up having to have the factory y-pipe narrowed just a bit so everything would line up. You'll find out once you get them installed and try to hook up the y-pipe. A muffler shop won't charge much to make a small change like that.

                  Darren
                  89 RCSB Dana 60/14 Bolt 4-lnk frnt/rr, 39.5's/14" Welds, 5.13, Truetrac/Detroit, AEM Intake, Holley 670 TBI, Holley Mnfld, Shorties, 40 series, no cat. 98 2wd 355, lt4 hotcam, 1.6 rllr rckrs



                  Project Pics:
                  http://community.webshots.com/album/366426764ygYniE

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                  • #10
                    Re: Installing shorties on 1994 K1500 TBI 350

                    Darren, thanks for the info and I was hoping you wouldn't say that. I specifically bought a set that said that they bolt right up to your stock Y pipe without modification. However, I have heard of fitment issues on many trucks/cars with headers.

                    I do have a wire feed and also an arc welder and I was thinking of trying to modify the Y pipe myself if necessary. Worst case, I screw it up and have to install a complete header back setup with new y pipe (or dual cats and pipes). I'm really hoping this is a simple unbolt and re-bolt process....I don't prefer to get into cutting and welding.

                    If I had wanted to do all sorts of modifications, I would have bought longtubes :smokin:

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                    • #11
                      Re: Installing shorties on 1994 K1500 TBI 350

                      Ok, the shorties have arrived....and sure as $hit the directions say that you need to bolt them up and then cut your factory Y-pipe and reweld it. WTF? Why do they say it will fit a stock Y pipe, if it won't? This pisses me off a little. I specifically looked around for a set that said they would fit without modifications.....Now I need to check JC whitney or elsewhere online and see about doing a true dual setup since I have to do cutting and welding already.

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                      • #12
                        Re: Installing shorties on 1994 K1500 TBI 350

                        What brand of headers are they?

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                        • #13
                          Re: Installing shorties on 1994 K1500 TBI 350

                          i got a set of shorties from summit and they bolted up fine to the stock y-pipe so u sould have no prob

                          1988 GMC, 4x4, G80, 5-Speed, 350H.O. Crate
                          2001 Mitsubishi Eclipse GS 2.4
                          2008 Chevy Trailblazer LT I6
                          1992 Cadillac Deville touring, 4.9L
                          1969 Cadillac Eldorado, Totaled 11/14/11

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                          • #14
                            Re: Installing shorties on 1994 K1500 TBI 350

                            They're ebay shorties....not sure what design/brand was copied....but they do have nice 3/8"flanges and 3" collectors....I also need to drill out the O2 bung since the bung was welded on but not drilled out for the O2!

                            This is the set that I picked up.

                            http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWN%3AIT

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                            • #15
                              Re: Installing shorties on 1994 K1500 TBI 350

                              Anyone have experience making their own Y pipe? I'm seriously considering making a larger y pipe since there is a good chance that this one will end up being hacked anyway. I wonder if I can just buy a few 45 and 90 deg bends and make something up or if that will work....

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