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304 & 308

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by eko, Sep 8, 2015.

  1. eko

    eko 3kO

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    Ho guys is there any way of telling whether the engine in the car is 304 or 308 and whats the difference in the two
     
  2. EYY

    EYY Well-Known Member

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    The crank is slightly different. On the side of a 308 block it has 308 cast in big letters. A 304 will either have 5L cast into it, or nothing at all.

    You can check the date casting on the front of the block above the timing cover. The engine number prefix (2 or 3 letters) can usually give a reasonable indication as to what model the engine is out of.
     
  3. _R_J_K_

    _R_J_K_ Well-Known Member

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    Is it injected? What kind of gearbox does it have?
     
  4. eko

    eko 3kO

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    Its vr commodore 5.0l 5spd manual has canle clutch which i assume is the t5 borg warner gearbox
     
  5. eko

    eko 3kO

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    Is there difference in power, stroke figures
     
  6. someguy360

    someguy360 Well-Known Member

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    It will be a 304, anything post VL was 304.

    The injected 304 from a VR will be 165kw at the flywheel, unless it's an HSV/HSV optioned then it's likely to be a 185 (which is the same 165 engine just a different tune).
     
  7. _R_J_K_

    _R_J_K_ Well-Known Member

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    There would be absolutely zero to gain in using a 308 over a 304, even at the block level. One is carbied, and one is fuel injected and has way better heads.
     
  8. Dirbatua

    Dirbatua AWOL!

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    HSV had headers and a different exhaust plus the tune, that was the difference.
     
  9. Reaper

    Reaper Tells it like it is.

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    They also had a knock sensor which truth be known caused more problems than it solved on those old tractors.
     
  10. STEALTHY™

    STEALTHY™ So Wet For You!

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    Just thought i'd point out for you guys, all VLs are carbied 304s. And some VKs (from a certain date onwards). Its a common misconception that carbies are 308s and injected are 304s ;)
     
  11. Brisbarnz

    Brisbarnz Active Member

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    Not *all vl v8's are carb. GPA
     
  12. STEALTHY™

    STEALTHY™ So Wet For You!

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    A limited run model of 750 units.

    Not really the point though, i was pointing out that most people think 'carby' = 308, when thats infact incorrect ;)
     
  13. someguy360

    someguy360 Well-Known Member

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    Ah yes, forgot about the exhaust differences.
     
  14. Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    1985 VK was 304 to bring it under the 5.0L rule for production racing.
     

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