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"Shadowfax" - Jeremy's 15th Anv. Trans Am

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  • Yup, .020 mill will put you near the original compression or you can use 4.8 flat top pistons.

    862 heads have the small 1.89" intake valves, bumping them up to the 2.00" valve is just another added cost.

    1998 Camaro Z28 - Bright Red, 6.0 TR224, 4l60e, 3.42 Eaton TrueTrac
    1989 Camaro IROC-Z Convertible - 355 big tube TPI, WC T5, 3.42 Zexel Torsen, CTS-V/C4 brakes
    1955 Bel Air 2 Door Post - 357 TPI, Muncie M20, 4 wheel disc

    2006 Saab 9-7x 5.3i Daily Driver

    Comment


    • the more I have been thinking about this.. the more I believe you are right on changing out the heads.. so if anyone has a set of 799 or 243 heads let me know! haha..

      also if I want to bump my compression by using flat top pistons.. any suggestions on brand/type etc? I was hoping to leave the short block alone.. but if I do this thing.. I might as well do it right!
      "Project Shadowfax" <- Clicky Clicky

      1984 Pontiac Trans Am (15th Anniversary Edition)
      L69 (High Output 5.0) / 700r4 Auto Trans



      Comment


      • Originally posted by Jdseibe View Post
        I was hoping to leave the short block alone.. but if I do this thing.. I might as well do it right!
        This is the type of statement that causes any set budget to go right out of the window.
        Makin Torque.

        Comment


        • well.. I actually found a Machine Shop with a pretty decent reputation that has a horrible website who is I am in contact with right now and I think I have them convinced to let me rework their website for trade on all my cylinder heads work.. so if thats the case.. it'll save me probably $700-$800.. so that will free up money that I had for the heads to do the pistons
          "Project Shadowfax" <- Clicky Clicky

          1984 Pontiac Trans Am (15th Anniversary Edition)
          L69 (High Output 5.0) / 700r4 Auto Trans



          Comment


          • [MENTION=3564]hoogiesngrinderz[/MENTION] if I have a set of heads milled, does it affect the intake at all?
            "Project Shadowfax" <- Clicky Clicky

            1984 Pontiac Trans Am (15th Anniversary Edition)
            L69 (High Output 5.0) / 700r4 Auto Trans



            Comment


            • if you mill way too much off then yes youll affect intake, but theres some error allowed
              91 Trans am, 305, Lt1 cam, 24lb injectors, headers, SLP LM2, SW chassis, massive panhard, lowered, modded TPI, Tuned, 4.10s, Lincoln locked
              85 Z28 406/th400?/3.42 4th gen disc rear/4th gen dash
              00 Tahoe Z71........Stock
              97 K1500 lt4 cam, 1.6s, MPFI, Solid axled, IROKs,------winter beater

              Comment


              • You can go up to .030 or so without really affecting intake mounting, people have gone more.

                What really comes into play is pushrod length, especially with an aftermarket cam. Make sure to get a pushrod length tool before ordering pushrods...found out the hard way that calculated required length doesn't always come close to actual required length.

                1998 Camaro Z28 - Bright Red, 6.0 TR224, 4l60e, 3.42 Eaton TrueTrac
                1989 Camaro IROC-Z Convertible - 355 big tube TPI, WC T5, 3.42 Zexel Torsen, CTS-V/C4 brakes
                1955 Bel Air 2 Door Post - 357 TPI, Muncie M20, 4 wheel disc

                2006 Saab 9-7x 5.3i Daily Driver

                Comment


                • I will know by sunday if I have an extra set of clean flat top pistons that will work great for your 5.3.
                  '91 Camaro Modded, LSx, House of Kolor Intense White, lowered, GS chrome 18" wheels, 14" Brembo CTS-V on all 4 corners, LS rear end, FP suspension components

                  " When in doubt...throttle out ! "
                  ENVYsion Entertainment Group

                  Comment


                  • So I met with the machine shop today, these guys really seem to know what they are doing. gave me some pretty good advice.. the deal hasn't been completely set in stone, but the owner told me that I should milk the deal for what its worth haha.. so not sure what the extent of that is yet. so I am rebuilding their site basically from ground up and in return are going to exchange for work on my engine.

                    The head machinist suggested since I am not doing a crazy high performance race engine to basically stick with the 862 heads (unless i can get decent 243/799 CHEAP), they would do a full degrease and rebuild on them.. the only milling he suggested was if the gasket surface needed it.. valve job and then said a good set of springs for the added lift would be a good start.

                    he then suggested replacing the pistons.. and If I am going to do that.. might as well bore the cylinders out a bit and go a little bigger on the pistons.

                    now I'm not sure how much of this they plan on covering cost wise.. and how much I'll have to pay for yet.. still have to work out the final details.. but If I can get my engine done up for as cheap as possible.. I'm not gonna complain haha!

                    what do you guys think?
                    "Project Shadowfax" <- Clicky Clicky

                    1984 Pontiac Trans Am (15th Anniversary Edition)
                    L69 (High Output 5.0) / 700r4 Auto Trans



                    Comment


                    • I'm trying to buy this ls1 intake from a guy on online.. Can you guys take a look at the pics and tell me if anything jumps out at you.
                      Attached Files
                      "Project Shadowfax" <- Clicky Clicky

                      1984 Pontiac Trans Am (15th Anniversary Edition)
                      L69 (High Output 5.0) / 700r4 Auto Trans



                      Comment


                      • Standard 98-00 f-body LS1 intake with the EGR port blocked. Can't tell you injector flow as 98 had 28.6 and 99-00 had 26.4

                        1998 Camaro Z28 - Bright Red, 6.0 TR224, 4l60e, 3.42 Eaton TrueTrac
                        1989 Camaro IROC-Z Convertible - 355 big tube TPI, WC T5, 3.42 Zexel Torsen, CTS-V/C4 brakes
                        1955 Bel Air 2 Door Post - 357 TPI, Muncie M20, 4 wheel disc

                        2006 Saab 9-7x 5.3i Daily Driver

                        Comment


                        • Is it worth buying?
                          "Project Shadowfax" <- Clicky Clicky

                          1984 Pontiac Trans Am (15th Anniversary Edition)
                          L69 (High Output 5.0) / 700r4 Auto Trans



                          Comment


                          • Price?

                            1998 Camaro Z28 - Bright Red, 6.0 TR224, 4l60e, 3.42 Eaton TrueTrac
                            1989 Camaro IROC-Z Convertible - 355 big tube TPI, WC T5, 3.42 Zexel Torsen, CTS-V/C4 brakes
                            1955 Bel Air 2 Door Post - 357 TPI, Muncie M20, 4 wheel disc

                            2006 Saab 9-7x 5.3i Daily Driver

                            Comment


                            • $250 obo and hes outta state so I would need it shipped
                              "Project Shadowfax" <- Clicky Clicky

                              1984 Pontiac Trans Am (15th Anniversary Edition)
                              L69 (High Output 5.0) / 700r4 Auto Trans



                              Comment


                              • I'm not very knowledgeable on ls1 parts, but I do stroll craigslist quite a bit. That seems kind of high, I have seen a few a while back around $150.
                                1991 Camaro RS: "Tiny Turbo Mullet"

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