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V6 scene? much happening?

Discussion in 'V6 Development And Modification' started by Jas.G, May 6, 2017.

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  1. Jun 12, 2017 #21
    Jas.G

    Jas.G Member

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    Cool, will be interesting to seel how another buick respondes with a solid roller. Just getting it all correct from start to finish an getting the valve train right and cylinder heads & manifold...
    This is the reason i kind-of want to pursure it again abit further soon with a Na v6. I know it will never perform like any of the semi serious boosted 6's or v8 gear, still think there is bit left in them. Always thought there would of been atleast 1 or 2 shops in Australia that went real hard with one! Just every shop is interested in the Ls/holden v8 gear or turbo'd ford or jap engines.
    Seen that 202. Nice an serious, And been lightened off abit in wieght. The little 202 still has a massive following
     
    Jas.G, Jun 12, 2017
    #21
  2. Jun 13, 2017 #22
    na3point8

    na3point8 Member

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    Yeah definitely mate, the guy i bought the camshaft off builds and races them for speedway, they are well developed and have the ecotechs pushing 330rwhp with a standard throttle body! I was trying to find an off the shelf 3.9"+ piston to use but without also using a stroker crank just can't find anything suitable. What is a set of custom pistons worth these days?
     
    na3point8, Jun 13, 2017
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  3. Jun 13, 2017 #23
    delcowizzid

    delcowizzid on holiday

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    Yeah speedway guys here get them up to around 258 cubic inches with a chev piston but there isn't a lot of gasket sealing space between the cylinders lol
     
    delcowizzid, Jun 13, 2017
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  4. Jun 16, 2017 #24
    Jas.G

    Jas.G Member

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    I haven't priced a set off custom pistons for awhile, been sooo long since i played with my v6. What class are they upto with 330 on the speedway? have heard seen afew here runing between 240 to 280, but they are very restricted on what they are aloud to do in the class here...
    Would be Awesome to see someone with a buick run up to a 4.00 inch bore an std 3.4 stroke(257ci's). enough seem around the 3.88 to 3.940 bore an been very reliable!
     
    Jas.G, Jun 16, 2017
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  5. Apr 21, 2018 #25
    na3point8

    na3point8 Member

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    Hey Jas, still around mate?

    I'm struggling with solid roller lifters for this thing, i don't want to go down the bronze bush path or $800+ lifter sets, any ideas? I have found Morel make a set Part No 5553 but i can't find anyone to ship them here. What are all the speedway guys using?
     
    na3point8, Apr 21, 2018
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  6. Apr 21, 2018 #26
    delcowizzid

    delcowizzid on holiday

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    delcowizzid, Apr 21, 2018
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  7. Apr 21, 2018 #27
    delcowizzid

    delcowizzid on holiday

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    Our 3800 uses 2 lengths of tiebar as the middle cylinder lifter spacing is different
     
    delcowizzid, Apr 21, 2018
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  8. Apr 22, 2018 #28
    Jas.G

    Jas.G Member

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    Hay Dan, ahhh sometimes on here.... more on Fb lately, only randomly come on here!
    I haven't done anything with my V6 for a long time now, even thow I should an believe I can get it into the 11's.
    Ummm, was looking an think Crow cams may be an importer or Morel lifters... so worth a try!
    I'll have a look over the next few days an see what I find an can remember.
     
    Jas.G, Apr 22, 2018
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  9. Apr 23, 2018 #29
    Pollushon

    Pollushon Boost gives me a bar....

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    Which just highlights they have no idea... this LS is costing me a fortune by comparison to Mangforce. I love the boosted 8 but I sure miss that boosted mang...
     
    Pollushon, Apr 23, 2018
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  10. Apr 23, 2018 #30
    immortality

    immortality Can't live without smoky bacon! Staff Member

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    I love our little L67 in the missus Calais, she keeps complaining about me stealing it........

    Stock they are rather average but with a bit of love and some cash/mods thrown at it they go bloody well. Beats the ass off my stock HSV 185i Senator for sure :(
     
    immortality, Apr 23, 2018
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  11. Apr 23, 2018 #31
    delcowizzid

    delcowizzid on holiday

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    Our boosted mang just went 370rwkw hopefully enough to run a 9.99 next season
     
    delcowizzid, Apr 23, 2018
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  12. Apr 23, 2018 #32
    losh1971

    losh1971 Well-Known Member

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    My Buick is still stock. Looking at a MACE memcal. Is it worth putting one on, or will I need CAI and Pacemakers to notice any improvement? I'm not looking for huge increases just a little more oomph for overtaking and when I'm towing or carrying a load. Also if I get a bored TB will I need a different memcal tune again or will the Mace one be ok?
     
    losh1971, Apr 23, 2018
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  13. Apr 23, 2018 #33
    immortality

    immortality Can't live without smoky bacon! Staff Member

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    Auto or manual?

    There are some benefits but probably best with a few simple mods. A decent CAI will help.

    TB won't effect the auto trans that much as the VR is MAP tuned. It's the MAF tuned vehicles that upset the tune if you enlarge the TB.

    But yes, they go better with a tune that adds a little fuel up top and some timing, the factory tune is a bit soft.
     
    immortality, Apr 23, 2018
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  14. Apr 23, 2018 #34
    losh1971

    losh1971 Well-Known Member

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    Yeah auto and plan on keeping it that way. I can get a memcal for under 200 bucks from MACE so something I can aim for in the next couple of months. Might be able to get set of Pacemakers off a VP if the wrecker hasn't sold them. I did hear that I would need a different tune again if I fitted an overside TB. Good to know this is not the case. CAI is on the list but a fair way down as they are quite exi for something decent like a MACE one. Probably look at CAI before new TB though. All gonna come down to if nothing goes wrong over the next few months. Had a pretty rough run since buying it but hopefully should be on top of repairs now, unless DFI and coils fail. Give it dues only sensor I have had to replace out of necessity in the last 12 months is the TPS.
     
    Last edited: Apr 23, 2018
    losh1971, Apr 23, 2018
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  15. Apr 23, 2018 #35
    losh1971

    losh1971 Well-Known Member

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    losh1971, Apr 23, 2018
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  16. Apr 23, 2018 #36
    immortality

    immortality Can't live without smoky bacon! Staff Member

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    Great for burnouts, but probably not so for street driving. I put a 70mm TB on my old VN and throttle response was just silly, slightest tough of the throttle would see the revs come up real quick with it been a manual. When I was doing a lot of long distance stuff it was ok but when I changed jobs and had to do a lot of stop/start driving I went back to a 65mm TB as it was more manageable with the other mods I had. That manifold has 2 TB's so the throttle is going to be touchy as.
     
    immortality, Apr 23, 2018
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  17. Apr 23, 2018 #37
    Pollushon

    Pollushon Boost gives me a bar....

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    The TB is mostly wank. I ran 18 pounds into an eco and it still wasn't restrictive. Buick is about the same. If I'd done more internal work maybe it would warrant it.

    As immortality said intake, exhaust and tune are a great place to start. Also a Corvette servo in the trans for some snap and if you want a cheap go fast mod 3.9-4.1 diff ratio will do it nicely.
     
    Pollushon, Apr 23, 2018
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  18. Apr 23, 2018 #38
    losh1971

    losh1971 Well-Known Member

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    Yeah from what I understand a bored TB won't increase HP. I believe it acts like you are putting your foot down more is all. I wouldn't consider the Tunnel manifold with dual TB's. I don't have a track car so it would be a defect waiting to happen. I suspect you would want a pretty tricked up engine with HD everything if someone was needing one of those manifolds. I only came across it as eBay suggested it.
    I'll start with a memcal as it's quick to fit and a must if trying to improve on factory VR V6. Pacemakers I really want but it's finding the time to remove them off the wreck, that is if he still has them. Might go have a look on Thurs and figure out what I need to do to get them off. Wrecker is in a muddy old paddock so really need to get onto it before the rain starts. I won't be changing the stock LSD as it is in really good shape bearing and seal wise. I'd pretty confidently say the cones need machining. But diff bloke said if he does them he would want to overhaul the bearings as well. Makes it a $500 plus job and not something I would tackle myself. If I want lower gears I could drop down to a 225/40 instead of the 50 or 55 I have now.
     
    Last edited: Apr 23, 2018
    losh1971, Apr 23, 2018
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  19. Apr 23, 2018 #39
    losh1971

    losh1971 Well-Known Member

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    My ute already has a 2.5" Redback cat back, so just needs some decent headers. I read about getting twin cats or hi flow cat but I have modded cats before and really seemed to make little or no difference to HP. Although when I did the former I just gutted the cat. Maybe a hi flow or twin could have been better. I'd be interested to know if gutting a cat on a Buick would increase HP. Id soon grab one from a wreck and try it if I thought it would help. Not gonna gut mine as it is in really good nic.
     
    losh1971, Apr 23, 2018
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  20. Apr 24, 2018 #40
    gtrboyy

    gtrboyy Well-Known Member

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    If you got benchseat handbrake cable is in the way to go twin cats....cruddy y-pipe is major restriction,twin cats help but not necessary on stocker v8.

    Pacies will make more of a bigger difference,mace style airbox & memcal off pcmhacking peeps best vfm.

    v8 throttle body is 65mm...if yours already has it do 3 mods above & corvette servo/deep pan/transcooler.Call it done.
     
    gtrboyy, Apr 24, 2018
    #40
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