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Thread: 2.95 to 3.33 How much drop

  1. #1
    Senior SCH Member
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    2.95 to 3.33 How much drop

    I made 24psi on a 8/2.95 and only want 16-18. I'm turning the blower @58k now and going to a 3.33 upper will take me to 51800.

    I'm looking to drop 5-6psi I'm thinking the 3.33 is the ticket..any input?

    Chris
    Stock Blocks are Unbreakable

  2. #2
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    Holy crap! If you're turning 24PSI with the 2.95 I seriously need to pull my 2.95 off! I purchased the largest 10 rib I could find.

    w0w

  3. #3
    Senior SCH Member
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    Its because of the crank pulley 10rib 8" why the car makes that boost on a T-trim teamed with a 2.95 that is serious biz
    I already have swapped and run a 3.33 now
    Stock Blocks are Unbreakable

  4. #4
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    Whewww! I just went out and measured my crank pulley - 7". What do you figure it'll push with the 2.95?

  5. #5
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    15ish
    Stock Blocks are Unbreakable

  6. #6
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    Better late than never? :)

    15 is nuttin! I'll take that as a starting point! Thank you

  7. #7
    Junior SCH Member 393bird's Avatar
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    Quote Originally Posted by eades5.0
    Its because of the crank pulley 10rib 8" why the car makes that boost on a T-trim teamed with a 2.95 that is serious biz
    I already have swapped and run a 3.33 now
    Since you already swapped them, how much of a drop did you get?
    1993 Thunderbird
    393 Stroker, Vortech YSi
    Lentech Strip Termimator, 4.30 Detroit Locker

  8. #8
    Senior SCH Member
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    I was seeing 14-16psi

    I have had a turbo on the car for 4-5mo now...T-trim is long gone.
    Stock Blocks are Unbreakable

  9. #9
    Junior SCH Member 393bird's Avatar
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    OK thanks. Just trying to get an idea what kind of boost I will see with my YSi. It is comes with a 8 inch/3 inch combo, and makes around 15 psi on most applications out of the box. I ordered a 3.4 and a 3.8 pulley also to slow it down during the inital tuning process on my carbed blow through. Should take care of it.
    1993 Thunderbird
    393 Stroker, Vortech YSi
    Lentech Strip Termimator, 4.30 Detroit Locker

  10. #10
    Junior SCH Member
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    for refrence i see just under 18 psi near 6,500 rpm. i run the 3 inch /8 inch combo on my ysi. this is a small cube street motor.

  11. #11
    Junior SCH Member 393bird's Avatar
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    Whats your car/engine? I am hyped about this part of my project. This is going to be a drivers side mount with a blow through carb. Once I get it all worked out, will be switching over to E85, then up the boost.
    1993 Thunderbird
    393 Stroker, Vortech YSi
    Lentech Strip Termimator, 4.30 Detroit Locker

  12. #12
    Junior SCH Member
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    Quote Originally Posted by 393bird
    Whats your car/engine? I am hyped about this part of my project. This is going to be a drivers side mount with a blow through carb. Once I get it all worked out, will be switching over to E85, then up the boost.
    327 cube ford engine, twisted wedge heads, holley intake, c-4, etc. real basic street deal. makes right at 650hp with the current tune.

  13. #13
    Junior SCH Member 393bird's Avatar
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    Thanks..
    1993 Thunderbird
    393 Stroker, Vortech YSi
    Lentech Strip Termimator, 4.30 Detroit Locker

  14. #14
    Junior SCH Member Paughwaf's Avatar
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    2 95 to 3 33 How much drop

    I have about 3months left on my Telus contract and I would like to cancel right away. How much would the ECF be? Is it 20/month?

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