4.2L Stroker Shortblock is DONE! - FirebirdV6.com/CamaroV6.com Message Board

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  • #16
    Re: 4.2L Stroker Shortblock is DONE!

    Ohh, sweet deal. Anyone here running a come racing stroker in a rwd car yet? I'm planning one for '08 realistically. Any numbers yet? If not, looks like I'll be the guinea pig :cool:
    \'97 Camaro M5 Y87 3.23 LSD, homebrew CAI, highfloCat, Flowmaster catback, Pacesetter headers, specstage3 clutch and aluminum flywheel, !egr, 2kW system.<br /><br />Possible L67 bottom end w/ abbott heads and a turbo in the works... gotta do more homework

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    • #17
      Re: 4.2L Stroker Shortblock is DONE!

      Originally posted by JohnnyC
      Ohh, sweet deal. Anyone here running a come racing stroker in a rwd car yet? I'm planning one for '08 realistically. Any numbers yet? If not, looks like I'll be the guinea pig :cool:
      I'll be the first kit running in the US.
      It will eventually make it's way into an F-body, but beginning life in my GTP. After I prove it in the GTP it will be moving into our 95 firebird.

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      • #18
        Re: 4.2L Stroker Shortblock is DONE!

        swesome. can't wait for the timeslips
        \'97 Camaro M5 Y87 3.23 LSD, homebrew CAI, highfloCat, Flowmaster catback, Pacesetter headers, specstage3 clutch and aluminum flywheel, !egr, 2kW system.<br /><br />Possible L67 bottom end w/ abbott heads and a turbo in the works... gotta do more homework

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        • #19
          Re: 4.2L Stroker Shortblock is DONE!

          Originally posted by JohnnyC
          10.6@129

          654RWHP@6,000rpm on 15# boost

          :)
          A 4.2L engine with 100% VE at 6000RPM and a pressure ratio of 2.02 and no temperature rise will only make 610 at the crank. These are ideal conditions.

          Any new guesses? haha...

          Nachius, could you post the details of the engine, with heads, cam, CR, etc.
          Keep us posted!
          Thanks!
          1997 Chevrolet Camaro v6 - 13.8@104MPH
          1997 Dodge Viper GTS

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          • #20
            Re: 4.2L Stroker Shortblock is DONE!

            5,492hp@6,000rpm @ 347# boost, for 0.3 seconds before the crank, rods, pistons, etc all blow through the block and turbos (all 19 of them) blow up :cool:

            well, truthfully wouldn't he be able to run a bit more boost and crank out some more horsepower?
            Last edited by JohnnyC; 08-28-2007, 01:59 PM.
            \'97 Camaro M5 Y87 3.23 LSD, homebrew CAI, highfloCat, Flowmaster catback, Pacesetter headers, specstage3 clutch and aluminum flywheel, !egr, 2kW system.<br /><br />Possible L67 bottom end w/ abbott heads and a turbo in the works... gotta do more homework

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            • #21
              Re: 4.2L Stroker Shortblock is DONE!

              Originally posted by AZ3.8Camaro
              A 4.2L engine with 100% VE at 6000RPM and a pressure ratio of 2.02 and no temperature rise will only make 610 at the crank. These are ideal conditions.

              Any new guesses? haha...

              Nachius, could you post the details of the engine, with heads, cam, CR, etc.
              Keep us posted!
              Thanks!
              I will probably have my rev limiter set around 6400 with a 6200-6300rpm shift point, but won't know for sure until I get it on the dyno and see where the power is so that is just a guess.

              Engine basic overview:
              255ci 4.2L Stroker Kit
              8.2:1 CR

              210/220 115LSA cam .512 lift

              Heads are custom with flow numbers as follows
              Intake/Exhaust
              67/54
              134/112
              185/154
              214/183
              231/196
              238/202
              241/206

              Power Adder
              Gen V M90 w/ N* 75mm throttle body
              Have pulleys from 3.4" to 2.6"
              Will be running a 5% overdrive SFI Damper/Balancer

              I will initially be tuning it with the 3.2" pully shooting for 500+HP (This should be about 10-12psi)

              Once I get it intercooled I will be tuning it for the 2.6" pully (this should be about (15-18psi) and a small shot of nitrous to assist in the cooling ;)

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              • #22
                Re: 4.2L Stroker Shortblock is DONE!

                ohh, M90. I thought it was turbo for some reason. turbo it and see 650 at the wheels :)
                \'97 Camaro M5 Y87 3.23 LSD, homebrew CAI, highfloCat, Flowmaster catback, Pacesetter headers, specstage3 clutch and aluminum flywheel, !egr, 2kW system.<br /><br />Possible L67 bottom end w/ abbott heads and a turbo in the works... gotta do more homework

                Comment


                • #23
                  Re: 4.2L Stroker Shortblock is DONE!

                  I thought about turboing it, but I decided to make some big records with the Gen V blower. All the records are turbo right now and the Gen V M90 has so much potential people are overlooking!

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