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  1. #1
    Join Date
    Dec 2011
    Posts
    722

    Default VP Torque Converter

    Jim how much HP/Torque will one of your modded SP torque converters handle? I have a 650 HP Stg 2 Buick producing 630 ft/lbs of torque.

  2. #2
    Join Date
    Feb 2002
    Location
    Pine City, MN
    Posts
    9,650

    Default Re: VP Torque Converter

    For street/light strip use with street radials, in a car less than 4000 lbs, with a gear ratio of 3,42 or higher, I would not worry about durability.

    Sustained drag/street racing with slicks or sticky dot's, trans brakes, and heavy, powerful cars, with numerically low rear end gears would be the cars/applications I would worry about, and think the appropriate small diameter Fixed pitch converter (Like my 9.5") are a much better fit for this.

    I have never had a 12/13" VP converter fail in an A body.

    JW
    Owner/operator

    Tri-Shield Performance
    Jim Weise
    Founder/Owner
    V-8 Buick.com
    320-629-8999

    Most folks are about as happy as they make up their minds to be.
    Abraham Lincoln
    16th president of US (1809 - 1865)

  3. #3
    Join Date
    Dec 2011
    Posts
    722

    Default Re: VP Torque Converter

    Quote Originally Posted by Jim Weise View Post
    For street/light strip use with street radials, in a car less than 4000 lbs, with a gear ratio of 3,42 or higher, I would not worry about durability.

    Sustained drag/street racing with slicks or sticky dot's, trans brakes, and heavy, powerful cars, with numerically low rear end gears would be the cars/applications I would worry about, and think the appropriate small diameter Fixed pitch converter (Like my 9.5") are a much better fit for this.

    I have never had a 12/13" VP converter fail in an A body.

    JW
    how much to modify my VP 12" core?

  4. #4
    Join Date
    Feb 2002
    Location
    Oakland Gardens, N.Y.
    Posts
    27,426

    Default Re: VP Torque Converter

    Quote Originally Posted by Buickrat1 View Post
    Jim how much HP/Torque will one of your modded SP torque converters handle? I have a 650 HP Stg 2 Buick producing 630 ft/lbs of torque.
    I have one of Jim's 12" VP converters in my GS. I use 275/60 MT Drag Radials. I have approximately 20 passes on it in the mid to high 11's. Best 60' has been 1.62. The car weighs 4020 lbs with me in it, nothing in the trunk, and 1/2 a tank of gas.
    Last edited by LARRY70GS; 01-21-2015 at 09:04 AM.
    Larry
    1998 "Fully Optioned" SC3800 Riviera
    70 GS 455 Stage1, TSP 470, 602 HP@ 5900, 589 TQ @ 4900
    TA Hyd Roller Cam, 230*/238*, 112, .544"/.577" lift, 4-7 swap
    MSD Digital 6+, Ignitionman Distributor w/MSD trigger
    THM400 with Ultimate 258mm converter, Gear Vendors OD
    AED 1000 HO Carb, 800 CFM 7042240 Quadrajet
    8.5 10 bolt, 3.73's Race weight 4025lbs.
    Best E.T. 11.54 Best MPH, 116.06
    Larrymta@verizon.net, GSCA #291
    BPG # 1063
    N.E. GS/GN Club Assistant Director

  5. #5
    Join Date
    Feb 2002
    Location
    Pine City, MN
    Posts
    9,650

    Default Re: VP Torque Converter

    Quote Originally Posted by buickrat1 View Post
    how much to modify my vp 12" core?

    $399
    Owner/operator

    Tri-Shield Performance
    Jim Weise
    Founder/Owner
    V-8 Buick.com
    320-629-8999

    Most folks are about as happy as they make up their minds to be.
    Abraham Lincoln
    16th president of US (1809 - 1865)

  6. #6
    Join Date
    Dec 2011
    Posts
    722

    Default Re: VP Torque Converter

    Jim can you give me an address to ship to, how much will shipping cost on the way back?

  7. #7
    Join Date
    Feb 2002
    Location
    Pine City, MN
    Posts
    9,650

    Default Re: VP Torque Converter

    Sure, PM sent

    JW
    Owner/operator

    Tri-Shield Performance
    Jim Weise
    Founder/Owner
    V-8 Buick.com
    320-629-8999

    Most folks are about as happy as they make up their minds to be.
    Abraham Lincoln
    16th president of US (1809 - 1865)

  8. #8
    Join Date
    Jun 2008
    Location
    Ely, NV
    Posts
    4,374

    Default Re: VP Torque Converter

    I know a guy with a switch pitch he moves between two of his Chevy's, running ~700HP (BBC with a 6-71 blower), and ran high-10's in a ~3,300lb car, and high-9's in a ~2,800lb car, and put over 100,000 miles on the transmission before freshing it up (built the first car in the 90's). I don't believe he did anything with the converter at that time. It's high-stall is around 3,500rpm iirc, might be 3,000rpm. He doesn't seem overly concerned about its durability!
    The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 2 & TKO-600 (Drag Week 2011!), '72 Centurion Conv't - 455w/TH400, '67 T-bird 4Dr (suicide) w/428, MegaSquirt 1 & C6. '69 Firebird replaced, now building a Pontiac Turbo L6!

    My Skylark thread
    http://www.v8buick.com/showthread.php?t=208168
    My Pontiac OHC Six thread.
    http://www.v8buick.com/showthread.php?t=219250

    I'm just a regular guy that fuel injected an old Buick and Thunderbird.

 

 

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