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The 98GT - 4pointsix to 4sixzero

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  • #31
    The efi port exits are smaller, but they are shaped way better inside. You can barely fit your finger through a D3 port with the stock thermactor bump and valve guide protrusion. They flow horribly and go turbulent around 0.400" lift. I could probably port them to flow better, but my desire to do that is zero.

    The F3TE heads (EFI) are +25cfm at 0.400, +35cfm at 0.500 stock for stock. That makes a huge difference in power potential. They are still about 30cfm lower than a TFS head, but are a definite step in the right direction.



    Life is short. Be a do'er and not a shoulda done'er.
    1998 Mustang GT https://bangshift.com/forum/forum/ba...ix-to-4sixzero
    1983 Mustang GT 545/552/302/Turbo302 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
    1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
    1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

    Comment


    • #32
      I hooked a battery up to it last night and was pleasantly surprised that everything seems to work. Lights, power seat, power windows, wipers, power mirrors, remote lock/unlock. Best of all, no smoke came out and nothing caught fire.

      Click image for larger version

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      Life is short. Be a do'er and not a shoulda done'er.
      1998 Mustang GT https://bangshift.com/forum/forum/ba...ix-to-4sixzero
      1983 Mustang GT 545/552/302/Turbo302 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
      1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
      1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

      Comment


      • #33
        No smoke, unless it's from Mrs. BBR's ears when she finds out you swiped her battery!
        Flying south, with a flock of bird dogs.

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        • #34
          efi question,,, How much HP is that MAF going to tolerate before it maxes out?
          Last edited by Beagle; September 3, 2020, 12:16 PM.
          Flying south, with a flock of bird dogs.

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          • #35
            My guess is it will be fine as is, but I believe if you exceed the MAF transfer values in the EEC, they can be scaled.

            This is the kind of stuff I hope to learn about.
            Life is short. Be a do'er and not a shoulda done'er.
            1998 Mustang GT https://bangshift.com/forum/forum/ba...ix-to-4sixzero
            1983 Mustang GT 545/552/302/Turbo302 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
            1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
            1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

            Comment


            • #36
              Just realized if this all works out, I will have cruise control. Inconceivable!
              Life is short. Be a do'er and not a shoulda done'er.
              1998 Mustang GT https://bangshift.com/forum/forum/ba...ix-to-4sixzero
              1983 Mustang GT 545/552/302/Turbo302 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
              1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
              1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

              Comment


              • #37
                This project had me at air conditioning! (Northern guys won't understand)

                oh... I read your other post - it'll be closer to 8.9:1 than 8.5:1 (before milling)
                Flying south, with a flock of bird dogs.

                Comment


                • #38
                  EFI stuff: I fully intend to use a cam position sensor, but was relieved to know it is only used to for the eec to identify #1 for full sequential injection. If no cam signal is present, the eec will operate fine in batch fire mode. I am happy that a lack signal does not result in a no-start situation.


                  I also did some fore-aft measuring to see if the 460 with the Meziere water pump will fit with the stock fan. It will be close, like 1/2", but I think it will all fit in there. The biggest fitment concern I have at the moment is the ABS pump location. It is located just behind the radiator on the passenger side of the engine bay. I hope I do not have to move it because that will be a pain in the butt.

                  Last edited by BBR; September 8, 2020, 08:50 AM.
                  Life is short. Be a do'er and not a shoulda done'er.
                  1998 Mustang GT https://bangshift.com/forum/forum/ba...ix-to-4sixzero
                  1983 Mustang GT 545/552/302/Turbo302 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
                  1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
                  1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

                  Comment


                  • #39
                    Who needs ABS?
                    There's always something new to learn.

                    Comment


                    • #40
                      The sequential bit makes sense, but I read all the EDIS stuff I could take to understand that it will stick at 10* btdc timing if there's no SAW signal from the ECM which I understood is PIP from 'puter to tell it where #1 is regardless of batch/sequential?

                      I did appreciate that the Cam position was just a number 1 indicator and chain stretch won't play into it with a 36-1 wheel on the crank. What I got out of all the reading was EDIS doesn't *need* the ECM to get home. Good stuff, that.
                      Last edited by Beagle; September 10, 2020, 07:45 AM.
                      Flying south, with a flock of bird dogs.

                      Comment


                      • #41
                        Originally posted by milner351 View Post
                        Who needs ABS?
                        I'd sorta like to keep it, but they make delete kits for it if it won't fit or if I determine it to be a huge PITA to deal with.
                        Life is short. Be a do'er and not a shoulda done'er.
                        1998 Mustang GT https://bangshift.com/forum/forum/ba...ix-to-4sixzero
                        1983 Mustang GT 545/552/302/Turbo302 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
                        1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
                        1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

                        Comment


                        • #42
                          Some days I am not the best driver ABS is my favorite safety feature. I rather have it than air bags. I have used ABS, luckily I have I yet to test an airbag.
                          http://www.bangshift.com/forum/forum...-consolidation

                          Comment


                          • #43
                            It will be interesting to see how ABS reacts to the extra weight/traction of a 460 on the front. Might be a neat upgrade.
                            Of all the paths you take in life - make sure a few of them are dirt.

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                            • #44
                              I'd be extremely interested in how much real weight difference there is - I've seen 720 quoted for a 460 and 600 for a 4.6 SOHC. The 720 is for the 460 with the sack of concrete iron intake manifold, not the gallon bag of jello aluminum manifold, and headers are a lot lighter than exhaust manifolds and all the smog pipes / pump that go with them. I don't know what the Meziere pump weighs but you can hold down a good size ski boat with a cast iron BBF water pump. The 4.6 is big by large... maybe a ride height before after would be interesting enough but I honestly don't think the BBF weighs that all that much more. I had a '98 'vert and it was noticeably not a 302 up front! Rode better though. lol.
                              Last edited by Beagle; September 10, 2020, 11:44 PM.
                              Flying south, with a flock of bird dogs.

                              Comment


                              • #45
                                I wish I had a big scale I could use to actually compare the two. I suspect there is not as much difference as one might think.

                                Actually, I just checked and 1000lb crane scales are not all that expensive. I might have to get one.


                                Also, the problem with casually looking for auto parts is that invariably you run a cross a deal on something when you may not really be at that point in a project.....

                                Case in point: I was researching what piston to use to drag the compression ratio up from the mid 8's to a more performance oriented 9.5:1 or 10:1. I concluded that a KB137 would do the job very well and wouldn't you know it? I stumbled upon a new set with rings and saved just over 125 bucks compared to Summit's price.

                                A KB137 is a 1.77" CH flat top with a 2.5cc intake valve relief.


                                Click image for larger version  Name:	kb137.jpg Views:	0 Size:	107.1 KB ID:	1280138
                                Last edited by BBR; September 11, 2020, 07:19 AM.
                                Life is short. Be a do'er and not a shoulda done'er.
                                1998 Mustang GT https://bangshift.com/forum/forum/ba...ix-to-4sixzero
                                1983 Mustang GT 545/552/302/Turbo302 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
                                1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
                                1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

                                Comment

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