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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. losh1971

    losh1971 Well-Known Member

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  2. losh1971

    losh1971 Well-Known Member

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    Since fitting the memcal it definitely goes better. You mainly notice it the occasional time you need to floor it. Regular driving and you can't tell. If I get time this weekend Pacies will go on and it will be interesting to see if I notice any more improvement. I think combined with a CAI is where hopefully I can notice some gains.
     
  3. losh1971

    losh1971 Well-Known Member

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    Question, I have Pacies to fit, memcal is done and CAI early next year unless I find the coin this year. Is there any other inexpensive mods that I can do to get some gains?
     
  4. woteva

    woteva NEED 4 SPEED

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    Go on a diet, loose some weight, remove any items not needed eg. Toolboxes, spare tyre
     
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  5. Lex

    Lex Active Member

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    I'd be unloading the compressor.
    Have two spares.
     
  6. losh1971

    losh1971 Well-Known Member

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    Pacemakers are on, next Mace CAI. Question will there be any noticeable gains with CAI over what I have now and where will those gains be? The upgrades so far have made a bit of difference but it's not until you floor it that you really notice the improvements. Ideally I'd like some more torque so that when I'm loaded up with gear or the trailer it's not a slug off the line.
     
  7. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Buicks have fairly much the best low end torque of any of the V6 engines. High ratio rockers will help a little but if you want a decent improvement than a diff ratio change and/or a converter change are great options. The beauty of upgrading the converter is that you get increased acceleration but with the lock up function cruise rpm doesn't change so no cost in fuel economy. It's a win:win situation :)

    The CAI will help improve throttle response, make a bit more power and help to improve fuel economy a bit too. Really no reason not to fit one.
     
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  8. losh1971

    losh1971 Well-Known Member

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    What about the Corvette servo that people fit, worthwhile?? Converter sounds like a good idea. I can soon slip the trans out and fit a new one myself. Anything else inside the trans that is considered an upgrade?? I'm getting the trans cooler fitted in Sept and I'd be keen to talk to the mech about future internal upgrades but want to know what I need to ask him about first. As far as the diff goes I'd rather leave it as all the bearings are still really good and I have no leaks. I am thinking about getting the LSD machined and shimmed but not sure if I will have time when I head to Adelaide in Oct. Mech over here said he would want to also replace bearings if he was repairing the LSD and he agreed they do not need replacing yet.
     
    Last edited: Jul 7, 2018
  9. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    No need to do bearings when doing the LSD or gears (other than pinion bearings).

    Doing the servo will improve the shifts (so improve the fun factor) but won't really make it any faster, certainly a good idea from a longevity point of view.
     
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  10. losh1971

    losh1971 Well-Known Member

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    My trans bloke over here won't even machine the cones and shim it unless he rebuilds the diff. To repair the LSD or regear I'd have to find someone willing to just do that. My diff bloke in Adelaide probably would if he and I have the time to get it done in the 11 days I am there. I like the idea of the Corvette servo if it extends the life of the trans. Mine is in pretty good shape so it would be good to hang onto it because it could be hit and miss finding another good SH trans. I will have a chat to him when I take it in and see what he says about getting it done maybe next year.
     
  11. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Well that's pathetic profiteering.
     
  12. EYY

    EYY Well-Known Member

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    Corvette servo is a good idea for the $30 it'll set you back. You need to drive them a little differently though. The hard change into second at wot was enough to make the rear end of mine step out on a damp (not wet) day with the standard ecotec- a bit scary at 65kmph when you're not used to that. Much nicer drop down into second gear too for overtaking etc.

    Just IMO, I wouldn't bother with a converter change. Very expensive for very little gain - and the buicks are very strong off the bottom as immortality suggested but don't have a whole heap of top end. You want to take advantage of that bottom end torque so I feel a standard converter won't make a difference over the 1/4 for a stock engine.
     
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  13. losh1971

    losh1971 Well-Known Member

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    30 bucks, that is a bargain. I should probably get one before it gets serviced in another 7 or 8 weeks and have him slip in in while the pan is off.
     
  14. woteva

    woteva NEED 4 SPEED

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    Don't need to take the pan off for the corvette servo. It's on the drivers side, just above the pan and takes about 10 minutes to change over.

    Pan removal is required for boost valve swap.
     
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  15. xauterus

    xauterus New Member

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    Does anyone have a link to the corvette servo?
     
  16. losh1971

    losh1971 Well-Known Member

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    Type it in to the eBay search and it comes up, Corvette 4L60E servo.
     
  17. losh1971

    losh1971 Well-Known Member

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  18. xauterus

    xauterus New Member

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    Thanks for that.
     
  19. losh1971

    losh1971 Well-Known Member

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    https://www.ebay.com.au/itm/SET-OF-...=item5d70bb872e:g:0j0AAOSwQcJaCp1o:rk:25:pf:0

    What are people's thoughts on these, Mace coils? Would they be as good as MSD? I know the improvements would be marginal, but over the next 6 months I would like to perform another 3 or 4 upgrades and some of those will only make a tiny difference, but all together I should see some gains over stock.
    At the present I am developing a list of upgrades, AKA wish-list and getting them as I can afford it.

    Edit, another question about these coils. Is it wise to upgrade the DFI at the same time? I will probably change plugs as I reckon my Bosch Platinums will be getting close to 35k by the time I fit new coils.
     
    Last edited: Nov 7, 2018
  20. stick3

    stick3 Active Member

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    has mace ever sold a bad product and there is some reviews on his site losh
    https://www.maceengineering.com.au/epages/shop.sf/en_AU/?
    ObjectPath=/Shops/mace/Products/IG602&ViewAction=ViewProductRating
    and i know oem delphi are preferred over msd but someone got to take the plunge and give them a go
    that link doesnt work copy and paste but all the reviews were positive any way
     
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