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Thinking about building an engine

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  • Thinking about building an engine

    After I finish the engine project I currently have, that is replacing the bad engine in our 2000 Sienna and getting it back on the road, my wife will love me forever when I do that, I have wanted to do an engine build just for kicks and giggles. I don't have any idea what I will do with the engine but I just enjoy building engines. I have been thinking about building a 383 stroker, you know take a 350 block, install a 400 crank and go from there. After reading more on this site and other sites about the 60 deg. v6 I think I might want to do one of those instead of the v8. I am inclined to stick to a pushrod engine for simplicities sake. I am old school too and prefer pushrod motors anyway.

    I am thinking a 3.4L Camaro engine would be my choice, I could always drop it in my 88 GMC S15 4WD pick-up or ...........who knows. Being old school I am thinking about converting it to be a carbureted engine. I would also like to simplify the ignition and try to eliminate any need for any ECM.

    I would also try to make it have that sweet V8 sound, not just at an idle but all the way through the RPM range. Back in the day it was the thing to do if you wanted your inline 6 to sound like a V8 to pull off the exhaust manifold and cut it in half, weld up both ends at the cut then weld a second header on the half that didn't have the stock one and run dual exhaust. We called that a "split manifold" and they did sound great, that is until you hit the throttle then everyone knew it was really an inline 6 under your hood.

    My idea is to design an exhaust so that one side is four cylinders and the other will have just two, that way a person might get the proper resonation from the exhaust to get that sweet V8 sound. I don't remember ever seeing it done that way before, even on an inline 6 with a split manifold. I guess nobody ever came up with the idea or perhaps someone did and it just does not work. I just might have to try it to see. Has anyone ever seen it done that way?

  • #2
    I'm pretty sure the exhaust tone doesn't exactly work like that. If 4 cylinders on one bank of a header made a V8 sound then why do all of these 4 cylinder cars with aftermarket exhaust sound nothing like a V8? I am thinking the engines harmonics have a bit more to do with the exhaust sound than how many cylinders meet at one collector.

    These engines can be a lot of fun but they are what they are. Reverse engineering the engine to run older fuel delivery and ignition systems and designing the exhaust purely around sound is going to reduce its performance compared to the stock SFI motor. This works great for people with worn out 2.8's because they already have all the parts to swap over to the 3.4 block and the increase in displacement and fresh motor give a good performance boost compared to what they had originally. If you were originally thinking V8 and go this route on a V6 looking for a V8 experience then you will likely be disappointed. You can't get beef from cutting open a chicken and along that same notion you can't get the entire V8 experience out of a V6.

    If you are looking for a unique sound and V8 performance there are only two solid options - Turbo V6 or V8.

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    • #3
      You could be right on the exhaust tone but I'm not convinced yet. As far as reducing performance is concerned by going the old school way of a carb instead of injection, my goal is more one of simplicity rather than squeezing every bit of power out of an engine. To me it would simply be a fun thing to do. I am really not looking to get V8 performance out of a little V6, I just like the little engine and want to do something different with it. I don't expect to get beef from a chicken but I do expect to make a chicken dish just as enjoyable as a good cut of beef. :-)

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      • #4
        it doesn't work like that, a 6 will always sound like a 6.

        trust me, i have true duals, longtube headers and a large cam. it might idle like a beast but under load it's all '660. lol

        Damon (V6Bluebird) taking his GF for a ride in my Z24 at the '09 V6Z24 bash.



        I'm going to install a new X pipe this week, that should cure the raspyness.
        Past Builds;
        1991 Z24, 3500/5 Spd. 275WHP/259WTQ 13.07@108 MPH
        1989 Camaro RS, ITB-3500/700R4. 263WHP/263WTQ 13.52@99.2 MPH
        Current Project;
        1972 Nova 12.73@105.7 MPH

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