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On3 70,76 or 78.

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  • On3 70,76 or 78.

    Mild 302, debating on if I should keep the 218/228 cam or swap back to the stock cam.

    Stock block, brodix heads, Holley intake.

    I was thinking of keeping the 218/228 with a 70mm and run less than 10psi.

    Desperately need a good deal on a dart or boss short block.

    320rwhp. 7.67 @ 90mph 1.7 60'

    DD: 2004 GMC Sierra VHO 6.0 LQ9 324whp 350wtrq

  • #2
    Did you scrap the idea of a 15:1, 10,000 rpm, 289ci motor?

    I'd go 76

    Comment


    • #3
      Originally posted by Tremor14 View Post
      Did you scrap the idea of a 15:1, 10,000 rpm, 289ci motor?

      I'd go 76
      No, still a wet dream. Just working within my means.

      My issue now is too broke to go dart, and I already know 500w is slow.

      320rwhp. 7.67 @ 90mph 1.7 60'

      DD: 2004 GMC Sierra VHO 6.0 LQ9 324whp 350wtrq

      Comment


      • #4
        351
        07 GT500
        05 SRT10
        88 turbocoupe T-bird
        93 Cobra
        86 coupe
        Ducati 848

        Comment


        • #5
          Originally posted by mk5.0 View Post
          351
          Yes, but I really don't want to have to do much modifying to get it under a stock hood, don't want k member spacers. A spider intake set up would probably clear, but it's just added costs.

          A stock 351 would do just fine though, even with my dinky little heads.

          I know it can hold it, but my question is how long can a stock 351w hold around 700-800whp?

          Not for sure if 59cc heads would be ideal on a 351 either, any idea right off the top of your heads what the compression would be close to?
          Last edited by 91CoupeMike; 07-03-2015, 09:35 AM.

          320rwhp. 7.67 @ 90mph 1.7 60'

          DD: 2004 GMC Sierra VHO 6.0 LQ9 324whp 350wtrq

          Comment


          • #6
            4.8L with turbo > production sbf junk

            Comment


            • #7
              Why on3 and not BW? BW is much better quality and can be had for similar prices ($100-200 more).
              Ded

              Comment


              • #8
                Originally posted by VaderTT View Post
                Why on3 and not BW? BW is much better quality and can be had for similar prices ($100-200 more).
                Wasn't aware. Thank you for the alternative!

                320rwhp. 7.67 @ 90mph 1.7 60'

                DD: 2004 GMC Sierra VHO 6.0 LQ9 324whp 350wtrq

                Comment


                • #9
                  Originally posted by jw33 View Post
                  4.8L with turbo > production sbf junk
                  Yep, I agree, but id do 6.0L. But then I'll have to buy a transmission pre built or built + everything else. Already have a sbf tko set up.

                  Will a stock 351w really be that much of a turd? Even with proper ring gap?

                  320rwhp. 7.67 @ 90mph 1.7 60'

                  DD: 2004 GMC Sierra VHO 6.0 LQ9 324whp 350wtrq

                  Comment


                  • #10
                    I have a master power 70mm on my car. 302 with trickflow heads.
                    1997 viper gts
                    1986 turbo mustang
                    1987 Buick grand national
                    1972 nova

                    Comment


                    • #11
                      Originally posted by 91CoupeMike View Post
                      Wasn't aware. Thank you for the alternative!
                      Yeah man, Borg Warner is like 10000x better than On3.

                      Ded

                      Comment


                      • #12
                        Originally posted by Mark Preus View Post
                        I have a master power 70mm on my car. 302 with trickflow heads.
                        These are pretty good too. I had a 70mm with my B&G kit, with .68 and .96 a/r turbine housings. I liked the .96 more.
                        Ded

                        Comment


                        • #13
                          Originally posted by VaderTT View Post
                          Yeah man, Borg Warner is like 10000x better than On3.

                          http://www.ebay.com/itm/BorgWarner-A...-/121270703773
                          Ah.. The turbo itself. Hell yeah those are better!

                          Does on3 sell just the piping?

                          320rwhp. 7.67 @ 90mph 1.7 60'

                          DD: 2004 GMC Sierra VHO 6.0 LQ9 324whp 350wtrq

                          Comment


                          • #14
                            Originally posted by VaderTT View Post
                            These are pretty good too. I had a 70mm with my B&G kit, with .68 and .96 a/r turbine housings. I liked the .96 more.
                            Was the .96 easier to drive around?

                            I was thinking 3.27s or 3.55s.

                            320rwhp. 7.67 @ 90mph 1.7 60'

                            DD: 2004 GMC Sierra VHO 6.0 LQ9 324whp 350wtrq

                            Comment


                            • #15
                              I would like to let you guys know, I'm turbo retarded. Lol

                              320rwhp. 7.67 @ 90mph 1.7 60'

                              DD: 2004 GMC Sierra VHO 6.0 LQ9 324whp 350wtrq

                              Comment

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