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3.9L LZ9 internal upgrades & modification query.

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  • #31
    Re: 3.9L LZ9 internal upgrades & modification query.

    Yep, just in case someone there doesn't know about it. And vise-versa.
    '06 3.9L VVT Engine Rebuild
    '91 Chevy Beretta GT 3.1L 5spd.

    Comment


    • #32
      Re: 3.9L LZ9 internal upgrades & modification query.

      Wow.....I love engine porn!!

      Seems that there is some potential with porting and polishing the upper and lower manifolds with some heavy work on the heads.

      And we have some big ass valves!!!!

      Comment


      • #33
        Re: 3.9L LZ9 internal upgrades & modification query.

        yah we actually have a good lookin motor, alot of the parts remind me of a small block V8

        Mods- VMS ECM/TCM Tune, Custom Magnaflow Cat Back, Full CRAB Intake, Racing Line Motor Mounts and Strut Tower Brace. Tinted Windows & Tails. EBC USR Rotors Front and Rear running YellowStuff Pads
        Originally posted by ahuhn
        so i just realized there a drawer in my room that has nothing in it but tequila, condoms and a blow up doll. cant figure out if thats a good thing or not

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        • #34
          Re: 3.9L LZ9 internal upgrades & modification query.

          Well boys and girls, just in case you didn't know...we have a forged crank. And a very nice piece at that. The teacher showed the difference with a guy who's building a 3.8 supercharged. I'm currently looking into cryoing the crank. I'm not going to mess with the stroke. I'm leaning towards having this built for E85. Also possibly drysumping it.
          '06 3.9L VVT Engine Rebuild
          '91 Chevy Beretta GT 3.1L 5spd.

          Comment


          • #35
            Re: 3.9L LZ9 internal upgrades & modification query.

            I just wanted to know who would be interested in going in for forged rods for the 3.9L LZ9? The rod are basically going to be stock spec except for the wrist pin which will be a .927in instead of the OE .945in. The reason for the smaller wrist pin would be to easily accomodate a piston from a SBC.
            '06 3.9L VVT Engine Rebuild
            '91 Chevy Beretta GT 3.1L 5spd.

            Comment


            • #36
              Re: 3.9L LZ9 internal upgrades & modification query.

              Dont know to much about this stuff so i'm not going to act like I do. What is there to gain from what was said above.
              2006 Black g6 Gtp, MODS: Dr speed stage-3, Gt-r exhaust, 93 Octane VMS Tune, Dxr Black 18'' Rims, Razzi Body Kit,
              Red interior lights, Alpine 2 DIN Head Unit, Boston Speakers, 2 12'' Alpine type-r in a custom ported box, front side 30% tint back and rear 10% tint. EBC rotors, Redstuff Pads, Black Recessed Grills

              Comment


              • #37
                Re: 3.9L LZ9 internal upgrades & modification query.

                Well, going to the SBC (Small Block Chevy) wrist pin diameter will allow access to pistons from like a LS1. So you don't have to get custom pistons on top of the custom rods you will need since the aftermarket does not currently support this motor.
                So, let's say you want to increase the compression ratio slightly. You can look for a flat top piston from a V8 which everyone and their brother makes. Instead of having to make custom pistons since the wrist pin is larger. Our cylinder bore stock is 3.9in. Which if you look at say Summit & Jegs, etc. is the same bore from a LS1 V8.
                '06 3.9L VVT Engine Rebuild
                '91 Chevy Beretta GT 3.1L 5spd.

                Comment


                • #38
                  Re: 3.9L LZ9 internal upgrades & modification query.

                  Is the deck height compatible?
                  Ben

                  Comment


                  • #39
                    Re: 3.9L LZ9 internal upgrades & modification query.

                    I think as long as the compression height & the overall length (rod & piston assy) is the same or shorter, it should be no problem. The other thing that has to be looked into is the side skirts.
                    '06 3.9L VVT Engine Rebuild
                    '91 Chevy Beretta GT 3.1L 5spd.

                    Comment


                    • #40
                      Re: 3.9L LZ9 internal upgrades & modification query.

                      sounds like youve been talking to joe.

                      750WHP Magnacharged GTO.....WTF!
                      TVS2300 GTO, Innovators West 8" Overdrive Pulley, ECS Tensioner, SD tuned by Andrew at Complete street performance, Ed Curtis custom Lunati camshaft 230/236 .6XX/.6XX 113 LSA, Hardened Pushrods, Lunati .675 lift Valve Springs, Single Walbro 255 fuel pump in stock bucket, Kooks 1 7/8 Jet hot coated Headers , Kooks 3" catless mid pipes with DMH low pro electric cutouts, Spintech 2.5" stainless steel exhaust with X pipe, Carbon fiber Cold air box with AEM air filter, Billet products short shifter, JamesBiz Oil catch can, Pedders 5/16" raise springs with drag bags, Weld RTS Black with Hoosiers
                      Show
                      -20% tint
                      -bohaman AUX-in radio mod
                      -Professionally heated seats

                      Comment


                      • #41
                        Re: 3.9L LZ9 internal upgrades & modification query.

                        Not really. What was suggested to me is that I weld the crank and increase the stroke on it. Then I should be able to use 5.7in V8 connecting rods. This would probrably be cheaper than buying forged connecting rods. The problem I have with that is that 1. It doesn't help the aftermarket situation which already at nil for the 3.9L. 2. This motor already has a really nice forged crank, which I don't want to mess with. 3. The school I have been going to has helped me with finding out what options I have and how to obtain the numbers I need to ask around.

                        Who's Joe?
                        '06 3.9L VVT Engine Rebuild
                        '91 Chevy Beretta GT 3.1L 5spd.

                        Comment


                        • #42
                          Re: 3.9L LZ9 internal upgrades & modification query.

                          Originally posted by mrtohil
                          Not really. What was suggested to me is that I weld the crank and increase the stroke on it. Then I should be able to use 5.7in V8 connecting rods. This would probrably be cheaper than buying forged connecting rods. The problem I have with that is that 1. It doesn't help the aftermarket situation which already at nil for the 3.9L. 2. This motor already has a really nice forged crank, which I don't want to mess with. 3. The school I have been going to has helped me with finding out what options I have and how to obtain the numbers I need to ask around.

                          Who's Joe?
                          the guy thats been responding in your thread on 60degreev6. he really knows his stuff

                          750WHP Magnacharged GTO.....WTF!
                          TVS2300 GTO, Innovators West 8" Overdrive Pulley, ECS Tensioner, SD tuned by Andrew at Complete street performance, Ed Curtis custom Lunati camshaft 230/236 .6XX/.6XX 113 LSA, Hardened Pushrods, Lunati .675 lift Valve Springs, Single Walbro 255 fuel pump in stock bucket, Kooks 1 7/8 Jet hot coated Headers , Kooks 3" catless mid pipes with DMH low pro electric cutouts, Spintech 2.5" stainless steel exhaust with X pipe, Carbon fiber Cold air box with AEM air filter, Billet products short shifter, JamesBiz Oil catch can, Pedders 5/16" raise springs with drag bags, Weld RTS Black with Hoosiers
                          Show
                          -20% tint
                          -bohaman AUX-in radio mod
                          -Professionally heated seats

                          Comment


                          • #43
                            Re: 3.9L LZ9 internal upgrades & modification query.

                            Do you mean Joseph Upson?
                            '06 3.9L VVT Engine Rebuild
                            '91 Chevy Beretta GT 3.1L 5spd.

                            Comment


                            • #44
                              Re: 3.9L LZ9 internal upgrades & modification query.

                              Originally posted by mrtohil
                              Do you mean Joseph Upson?
                              yeah

                              750WHP Magnacharged GTO.....WTF!
                              TVS2300 GTO, Innovators West 8" Overdrive Pulley, ECS Tensioner, SD tuned by Andrew at Complete street performance, Ed Curtis custom Lunati camshaft 230/236 .6XX/.6XX 113 LSA, Hardened Pushrods, Lunati .675 lift Valve Springs, Single Walbro 255 fuel pump in stock bucket, Kooks 1 7/8 Jet hot coated Headers , Kooks 3" catless mid pipes with DMH low pro electric cutouts, Spintech 2.5" stainless steel exhaust with X pipe, Carbon fiber Cold air box with AEM air filter, Billet products short shifter, JamesBiz Oil catch can, Pedders 5/16" raise springs with drag bags, Weld RTS Black with Hoosiers
                              Show
                              -20% tint
                              -bohaman AUX-in radio mod
                              -Professionally heated seats

                              Comment


                              • #45
                                Re: 3.9L LZ9 internal upgrades & modification query.

                                Just to let everyone know. I'm posting the intense measurements and specs in 60degreeV6. If you want me to post them here also, let me know.
                                '06 3.9L VVT Engine Rebuild
                                '91 Chevy Beretta GT 3.1L 5spd.

                                Comment

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