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Buick and Ecotec V6 Performance Upgrades

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by dufus, Dec 5, 2007.

  1. Wozza

    Wozza Well-Known Member

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  2. Pollushon

    Pollushon Boost gives me a bar....

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  3. Bloss

    Bloss New Member

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    I'm after anywhere from 55 to 70 extra engine kws. I have been recommended a Raptor supercharger. Any opinions would be very helpful.
     
  4. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Boost is the easiest way to get large power increases easily and the Buick 3800 V6 engines love boost. The Raptor is the easiest way to boost if you are looking for a simple bolt-on type system.
     
  5. Bloss

    Bloss New Member

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    Allthough my v6 only has 103,000 kms on it, would the supercharger be too powerful for the engine?
    How much roughly would a cai, memcal, full exhaust including extractors add in engine kilowatts? Without supercharger.
     
  6. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    The raptor is a centrifugal supercharger which is a lot easier on the engine as it builds boost progressively with rpm. 103000 is barely broken in....

    I wouldn't expect more than about 10-15kw max with the other mentioned mods.
     
  7. Bloss

    Bloss New Member

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    Thanks. Is that 10-15 at rear wheels or flywheel?
     
  8. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    That would be flywheel. Stock exhaust on the V6 isn't that restrictive like it is on the V8.
     
  9. losh1971

    losh1971 Well-Known Member

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    That's interesting that those mods would give an extra 10 to 15. I have a memcal on its way and Pacemakers that just need a clean up and repaint. Bloss if you get headers go for Pacies. From the looks of them they look a really good extractors compared to some i have seen. I'm pretty sure they are tuned length and the tubes are nice and long. Apparently twin cats are the go. I have a bench seat that i want to keep or i would consider fitting buckets and relocating the handbrake and fitting twin cats.
     
  10. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    10-15 would be the good end depending on the engine condition, considerably less if it's a flogged beast.
     
  11. Bloss

    Bloss New Member

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    Th
    Thanks buddy. I'm trying to decide between the Raptor supercharger or a cai, extractors, high flow cat & catback exhaust. I'm happy with even just 180-185kw at the flywheel.
     
  12. losh1971

    losh1971 Well-Known Member

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    Yeah I won't get 15 then. Mine has done 200k. Doesn't use much oil maybe 500 - 600 every 10k.
     
  13. losh1971

    losh1971 Well-Known Member

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    Reckon if you went super charger you would be best to get Pacies and decent exhaust. Memcal tune is a given and is only 150 bucks, so money well spent IMHO.
     
  14. losh1971

    losh1971 Well-Known Member

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    My memcal should be going in this week. I will report back on how it feels afterwards. I could have it dynoed but don't really want to spend the money at the moment. I might have it dynoed next year once i get the CAI fitted.
     
  15. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    You won't get 180kw with just basic bolt-on mods like exhaust and intake. Stock VR V6 is about 130kw and the later model ecotec is 147/152kw depending on exactly which model it comes in.

    Another consideration is how you use that power, a diff ratio change and/or (a small) stall converter will help make much better use of the power you have. TBH, these days I am off the belief that Holden screwed the pootch when it came to gearing the V6 models (based on a 100km/h speed limit). There are plenty of users with upgraded diff ratio's (anywhere from 3.45 to 3.73) who have seen improvements in fuel economy even though the engine is turning at a slightly higher rpm for a given road speed
     
  16. losh1971

    losh1971 Well-Known Member

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    If I got say 8-9 given my engine has done 200k, would it be very noticeable without putting it on the dyno?
     
  17. losh1971

    losh1971 Well-Known Member

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    Another question does fitting extractors improve fuel economy like they claim it does?
     
  18. EYY

    EYY Well-Known Member

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    You probably won't notice more peak power, but you'll likely notice its more responsive (sensitive to small throttle movements).
     
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  19. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    ^^^ What he said :)
     
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  20. deserthead

    deserthead Well-Known Member

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    Can confirm this one! I not long ago threw in 3.45s in my VS ute (L67) and at 105kph, engine is turning at 2100rpm, average on the highway is between 7.8-8.2l/100ks, havent done a trip longer than about 150ks in one trip but I know it would happily be toward the lower end of the scale.
     
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