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Pontiac Dyno Challenge

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  • Pontiac Dyno Challenge

    We are here at Vrbancic Brothers racing to Dino test Bryan Rocks new 496 Pontiac bullet how much horsepower will it make?

    Details are 11 to 1 compressicamas Ultradyne cam of 268/278 @ .050, and 710 net lift, 109 love sep 1100 CFM dominator on An extensively reworked Edelbrock single plane and fully ported and Kaufman products cylinder heads.

    Please post up your best estimate for power and torque at what Rpm that the prodigous Poncho will make today doing the dyno session. The closest person to the actual numbers win a BangshiftT-shirt and hat and other special prizes to be named later we'll be posting updates and pictures all during today so stay tuned as we see just how much power we can make out of a high effort street driven pump gas poncho.
    Drag Week 2006 & 2012 - Winner Street Race Big Block Naturally Aspirated - R/U 2007 Broke DW '05 and Drag Weekend '15 Coincidence?

  • #2
    796hp @ 5600
    705tq @ 5200

    Comment


    • #3
      I'll be uploading photos that Bill sends me real time from the dyno session. Here's the first batch!
      Attached Files
      That which you manifest is before you.

      Comment


      • #4
        So far so good, a clean start, followed by break in rpm cycling. Oil pressure on the low side so we upped the Peterson external bypass pressure adjustment looking for 50 PSI.
        Attached Files
        Last edited by Brian Lohnes; February 8, 2012, 11:33 AM.
        Drag Week 2006 & 2012 - Winner Street Race Big Block Naturally Aspirated - R/U 2007 Broke DW '05 and Drag Weekend '15 Coincidence?

        Comment


        • #5
          760 @ 7000
          600 @5200

          Edit I think it needs more lift in the cam to make bigger numbers
          Last edited by JeffMcKC; February 8, 2012, 12:01 PM.
          2007 SBN/A Drag Week Winner & First only SBN/A Car in the 9's Till 2012
          First to run in the .90s .80s and .70's in SBN/A
          2012 SSBN/A Drag Week Winner First in the 9.60's/ 9.67 @ 139 1.42 60'
          2013 SSBN/A Drag Week, Lets quit sand bagging, and let it rip!

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          • #6
            Hp [email protected]
            tq [email protected]
            Neal

            Drag Week 2010, 2011, 2012, 2013

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            • #7
              We have stable repeatable baseline our range for the pulls is 4000 to 7000 as the first helpful clue.
              Drag Week 2006 & 2012 - Winner Street Race Big Block Naturally Aspirated - R/U 2007 Broke DW '05 and Drag Weekend '15 Coincidence?

              Comment


              • #8
                Okay with our baseline work done best timing is 31 total. AFR's are still on the fat side so we're taking out fuel. We're starting at 11.6.
                Attached Files
                Last edited by Brian Lohnes; February 8, 2012, 12:25 PM.
                Drag Week 2006 & 2012 - Winner Street Race Big Block Naturally Aspirated - R/U 2007 Broke DW '05 and Drag Weekend '15 Coincidence?

                Comment


                • #9
                  Bill whats the intake vac building to? I think if it goes to 7000 it may not get as much power, but on the track be fine.

                  What are the base numbers?
                  Last edited by JeffMcKC; February 8, 2012, 12:37 PM.
                  2007 SBN/A Drag Week Winner & First only SBN/A Car in the 9's Till 2012
                  First to run in the .90s .80s and .70's in SBN/A
                  2012 SSBN/A Drag Week Winner First in the 9.60's/ 9.67 @ 139 1.42 60'
                  2013 SSBN/A Drag Week, Lets quit sand bagging, and let it rip!

                  Comment


                  • #10
                    Fresh plugs are going in we are doing the first break in oil change after 13 pulls which included the. Baby step pulls
                    Attached Files
                    Last edited by Brian Lohnes; February 8, 2012, 01:37 PM.
                    Drag Week 2006 & 2012 - Winner Street Race Big Block Naturally Aspirated - R/U 2007 Broke DW '05 and Drag Weekend '15 Coincidence?

                    Comment


                    • #11
                      780 HP @ 6500
                      675 TQ @ 6000

                      nice looking poncho!!

                      Comment


                      • #12
                        Bill - what kind of dyno? This makes a difference in estimated HP. Do you know how the load cell calibrates (there will be a chart of dead weights vs. readout, then a correction either of the readout or in the software)?

                        Either way, I'll guess right at 700 HP @ 6800 given your note that it's a real street engine, and I'm going to guess 710 lb/ft @ 5700. This is a WAG!

                        Dan

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                        • #13
                          Did he finally go to an aftermarket block?
                          BS'er formally known as Rebeldryver

                          Resident Instigator

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                          • #14
                            Ever wonder what a Filter Mag will do? Here is the inside of our Wix after the warm up, break in and baseline pulls.
                            Attached Files
                            Last edited by Brian Lohnes; February 8, 2012, 01:36 PM.
                            Drag Week 2006 & 2012 - Winner Street Race Big Block Naturally Aspirated - R/U 2007 Broke DW '05 and Drag Weekend '15 Coincidence?

                            Comment


                            • #15
                              We have changed out the used Autolite 3923's for fresh as we get into the meat of the tuning
                              Attached Files
                              Last edited by Brian Lohnes; February 8, 2012, 01:38 PM.
                              Drag Week 2006 & 2012 - Winner Street Race Big Block Naturally Aspirated - R/U 2007 Broke DW '05 and Drag Weekend '15 Coincidence?

                              Comment

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