TSP 9.5" Street/Strip converters- Lifetime warrantee!

Discussion in 'Tri Shield Performance' started by Jim Weise, Feb 5, 2008.

  1. 69GS400s

    69GS400s ...my own amusement ride!

    ...did it for you JW :beers2:


    I had BigRed out on Sunday after not driving it since before christmas (a looonnngggg time for me even during winter) - puttered around town a bit and when I finally hammered it, I uttered those same words as the first time driving it after the install

    :eek2: HOLY S#!T !!!!! :eek2:

    Guys - this one should be a no-brainer. You're getting a quality TC for about half the price of a Big Name company ... JW has done the homework to make sure it is optimized for our barges ... AND you get a lifetime warantee !!
    mmws6 likes this.
  2. Jim Weise

    Jim Weise EFI/DIS 482


    If your KB converter works like mine did, then what we do is basically what they did years ago. After they quit doing them, there was not place to get a VP converter, with the mod package that KB had back then, and that's what we do to them now. We stall them a little more, but not much.. what is yours stalling to now.

    As far as the 9.5" unit, I would need more info on your combo. carb, cam, ect.

  3. Jim Weise

    Jim Weise EFI/DIS 482

    Thanks Alan!

  4. Gary Bohannon

    Gary Bohannon Well-Known Member

    My 67 usually runs 12.40's at 107-108
    The old KB switch pitch gets 1.8 60ft, ... best 1.76, 12.36, at 108 mph
    My efficiency calculations say a good converter will get 12.20's at 108 mph
    and the mph should improve as well.
    But the question stated above was
    1. could my s/p be improved
    2. How much would a 9.5" help
    I have a 455, ported st.1 heads,b4b,800 Q-jet, c118 cam, sp3000/2000,th 400 trans., 3.42 rear, 3800 lb chassis.
    thanks, Gary B
  5. Jim Weise

    Jim Weise EFI/DIS 482


    If your VP converter is 20+ years old, there is a good chance that we could improve the efficiency of it, depending on how the fin tip clearances were set to begin with, and what kind of wear the unit has. Also, we would look at the stator vane angles, to insure that they are optimum.

    I am assuming you have the KB 149 12" VP converter. If for some reason you have the 13" unit, then we certainly could improve your times with the smaller converter.

    What stall speed does it seem to flash to now?

    In going to a 9.5" converter, I would venture to guess that you would see a tenth or two over the best you can get from a VP converter, if for no other reason that the 10 lbs reduction in rotating weight. This simply allows the engine to rev faster thru the gears. Further, we could get some more out of it, if in fact we set up a converter that was more oriented for the track than the street, I know that 118 cam likes to get above 3000 rpm to produce the best times. Of course exact ET improvements would be absolutely dependent on the ability of the car to get ahold of the pavement. If we can get that 60' time down into the 1.6's, I can see some low 12's out of the car, with the right air and traction. Depending on where that cam is degreed in, I would say a 3000-3500 stall converter would optimize your 60' time, and the smaller converter will be more efficient down track.

    And of course you would have to change the front pump for the fixed pitch converter. I can supply everything you need for the conversion.

    But ultimately, I can only speculate on et improvements, until we cut your current converter, and see what you really have. As you probably know, there are a number of factors that control et and mph ability, and your getting close to the limits of stock fuel pumps and lines. I have been drag racing long enough to know that it would be unwise for me to sit here and spit out specific et gains, that would be more advertising jargon, than anything, but we certainly would like to work with you to help you optimize what you have now.


  6. Gary Bohannon

    Gary Bohannon Well-Known Member


    It's a KB 149, 3000 stall, built in the mid 1980's.

    My guess is that my 60 ft would gain a tenth and grow to 1-2 tenths & mph, in a quarter.
    I would like to hear from someone who has done a straight swap from s/p to a good fixed.
  7. flynbuick

    flynbuick Guest

    I have one of JW's units like Alan's. On the first test run after install the car scared the trans shop owner so bad he had another trans guy in the shop take it for the second test run. Then the second guy came back and says he was throwing all his small block Chevy and Ford stuff in the trash and that he never believed a convertible could be so quick.
    Harlockssx likes this.
  8. quickstage1

    quickstage1 Well-Known Member

    Are you still selling these converters? I'm looking to replace my VP converter with a fixed converter in my '70 Skylark. I was running 11.18 @ 122mph with the VP before it broke on me. I'm guessing I'll need your Stage2 converter with around 4200 stall. I can PM you all of my specs if you are still offering these converters.

  9. whamo

    whamo 454 71 skylark custom

    I just installed one of the Stage2 9.5" converters in my car. I havent made it out to the track yet, but driving it on the street has been great. Mine is set up for 3500 stall though.

    What is your setup? Engine, gears and racing weight? Just curious.
  10. quickstage1

    quickstage1 Well-Known Member

    Sounds like he has another happy customer. My car has an 11 to 1 464, ported stage1 iron heads flowing 280 and roller rockers. Ported T/A intake with Proform 950cfm carb. Solid lift cam, 276-282 duration, .600-.594 lift. My vp converter was flashing to 4200 and I have 3.73 gears. 28x12.5 ET Streets. I don't know the weight of the car but have lowered the weight alittle with a 'glass hood and front bumper and racing seats. I usually had mid 1.6 60' times and the car usually hooks pretty good.

  11. Chris Cornett

    Chris Cornett Well-Known Member

    I have 1 of Jim's convertors in my 70 GS455 and it works real nice. I have a KB118 cam and stage 1 heads on the car. It behaves like a larger diameter convertor would. I would recommend this convertor to anyone with a mild street engine.
  12. Cali72's

    Cali72's Well-Known Member

    Hello my name is russell and I recentley rebuilted my th-350 with the b&m transkit at school and I didnt have enough money for a good torque converter so I am snooping around for a new one. I also rebuilt the engine it is a 350 I bought a rebuild kit from a local machine shop and put the comp 268h kit in it also and and did a 3 angle valve job on the heads and some mild porting to them with my shop teacher. I currentley have a stock rear end and I am looking to put 3.73 in the rear. So to make a long story short I was wondering if you could make me a tourque converter and how much would it cost thanks for the help sorry for the long post.:beer
  13. Dave Hanlon

    Dave Hanlon LARGE MEMBER

    got a 3500 converter from tsp very very happy with it blew away my switch pitch set up I had in the car nice and tight for cruising and worked flawlessly on the track . Jim was right on with my motor drivetrain/combo .propeled my 4000# gs to 11:20 @121 .:TU: :TU: :TU:
  14. Da Torquester.

    Da Torquester. Platinum Level Contributor

    Hey Jim, was wanting to know if you still need a 12" core ? I was wanting to get my V/P converter tailored a little better to my combination. Thanks, John Biggs.
  15. Jim Weise

    Jim Weise EFI/DIS 482


    I do have a couple of virgin 12" VP cores now..

  16. white72gs455

    white72gs455 Going Fast With Class!!!

    Hi Jim,
    I see the price in 2008 for the stg 1 9.5, are they the same today or are there any changes?
    I have a mild buid 455 th4oo 3:42, Just wondering.
  17. Nothingface5384

    Nothingface5384 Detail To Oil - Car Care

    i'll be also possibly looking for a fixed stall..stage 2 for now as you sad they can be upgraded later on for under 200! I want a good stall but nothing where it'd heat up the trans in the city and make driving miserable
    72 skylark with stock 350 but with twinturbos, 3.08 gears and a/c removed i'm sure i'm under 3800 with me in it
  18. AlaskaBuick

    AlaskaBuick Well-Known Member

    I just wanted to add my 2 cents here. I have had one of Jims 9.5" 4000 stall in my Stage 2 sport wagon for years and could not be happier. Beat the dog poo out of it in that heavy car and it never fails to impress me. Drives like a normal converter until you nail it. Flairs right up and lays it out.

    I was breaking converters for years until I got this.

  19. bostongsx

    bostongsx Platinum Level Contributor

    whats the availability of the 2004r converters Jim
  20. Jim Weise

    Jim Weise EFI/DIS 482

    Tell me about your setup, and how you want to use the car Herb.

    There are a number of 2004R converters available.


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