Distance from top of shift gate to center of shift ball | FerrariChat

Distance from top of shift gate to center of shift ball

Discussion in 'Technical Q&A' started by Steve Magnusson, Mar 13, 2023.

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  1. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    Jan 11, 2001
    26,932
    30°30'40" N 97°35'41" W (Texas)
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    Steve Magnusson
    Looking for the (stock) dimension from the top of the shift gate to the center of the shift ball on:

    TR = ?
    308/328 = ?

    TIA
     
  2. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
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    Brian Crall
    #2 Rifledriver, Mar 14, 2023
    Last edited: Mar 14, 2023
    What degree of accuracy do you need?
    Can I stick a ruler down into a shift box or?
     
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  3. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    Jan 11, 2001
    26,932
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    Eyeballing a ruler (or tape measure) is fine -- say +/- 1/4", but just go from the top surface of the shift gate to the center of the shifter knob ball.
     
  4. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
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    Glad I asked. I thought you were speaking of the ball on the bottom of the shift rod.
    308 is 7 3/4 to 8 inches. TR has to wait until home.
     
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  5. Drew Altemara

    Drew Altemara Formula 3

    Feb 11, 2002
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    I seem to remember the shift rod to be shorter on the carb 308 and longer on the 308QV. Or is my memory failing.
     
  6. Ricambi America

    Ricambi America F1 World Champ
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    Doesn't the position of the lock nut for the shift ball also somewhat affect this measurement? I'd guess there is about 7-12mm of 'thread' on the shaft which could affect the height of the ball, depending on the lock nut.
     
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  7. Rifledriver

    Rifledriver Three Time F1 World Champ

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    It can vary but as delivered they were screwed most of the way down the thread.
     
  8. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    Jan 11, 2001
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    I'm not looking for a super-exact number -- just what the ballpark is (and realize that there's some adjustment uncertainty, but bonus points if you give the exact F model measured).
     
  9. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
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    I have both here and they measure the same. They are different part numbers but length does not seem to be the difference.

    It was in vogue at one time to cut them down. That may have been the reason for your recollection.
     
  10. Dockboy

    Dockboy Formula Junior
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    May 11, 2013
    630
    Maryland
  11. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    Jan 11, 2001
    26,932
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    Steve Magnusson
    I'm thinking that this is true as well. Just scaling a photo of my ex-308 carb, I get a number like Dockboy's (~6"):

    Image Unavailable, Please Login

    but believe Rifledriver's measurement, too. The SPCs also indicate there was a part change for the shift stick lever from carb 308 (108822) to 308i-2V, 308QV, 328 which all use 116738. Anyone got a photo like Dockboy's, or mine, handy for a 308i-2V, 308QV, or 328 to post? An about 2" difference should look obvious.
     
  12. Dockboy

    Dockboy Formula Junior
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  13. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    Jan 11, 2001
    26,932
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    Yeah, have to say that is longer.
     
  14. Dockboy

    Dockboy Formula Junior
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    May 11, 2013
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    No Steve....that is of my car again....same 6 inches
     
  15. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    Jan 11, 2001
    26,932
    30°30'40" N 97°35'41" W (Texas)
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    My bad ;) - thought that you were saying "here you go (a picture of a 308i-2V, 308QV, or 328 you requested)".
     
  16. Ferrari Tech

    Ferrari Tech Formula 3

    Mar 5, 2010
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    Wade Williams
    1990 TR 6 1/2
    1977 308 carb, dry sump, 5 3/4
    1989 328, ABS, 7
    1987 328, 7
    1999 355, 6 1/2
    1983 512 BBi, 6

    That is just what I had close.
     
  17. Rifledriver

    Rifledriver Three Time F1 World Champ

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    All very interesting. Last night I measured the 328 and TR and as others have reported both are around 7 inches. This AM I remeasured the 308GTSi and QV here and both are closer to 8 than to 7. All 4 cars have the ball screwed almost all the way down on the threads. Only the QV has a non OE ball. It is larger so measured at the middle its about 1/4 taller which makes sense.

    Anyway I assume this exercise it to decide how tall the shifter should be in the new car?

    Very cool car by the way. 2 cars I always wanted to build for myself, one was a 67/68 Mustang retro rod sort of thing with a lot of grunt. Had a girlfriend many years ago with a 67 GT500. With an iron 428 it handled abominably but it was fun to drive and looked good. With a modern lighter engine and real suspension should make a really good car.
     
  18. Drew Altemara

    Drew Altemara Formula 3

    Feb 11, 2002
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    This is from a failing memory so take it with a grain of salt:

    I've had 2 carb and 1 QV 308.

    I seem to remember being told that some customers had complained about the heavy clutch and shifting on the carbed 308 and that the shift rod was lengthened and angle at which you push the clutch was changed on the QV to make it a little lighter. But that was when I was buying the QV so might have been a sales pitch.

    Is the QV easier to shift?
     
  19. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    Jan 11, 2001
    26,932
    30°30'40" N 97°35'41" W (Texas)
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    Exactly ;). I definitely prefer a shorter shift lever, but it's hard to compare, and make a decision, without actually being able to sit in the car (and it has a non-stock center console and transmission so not even sure where the shifter is located relative to stock).

    I'm hoping so. The basic overall structure/chassis is almost identical to a TR except for the engine placement -- and I'm thinking along your lines that that won't be much of a penalty with the lower and lighter powerplant (and it has ~80 more HP). One thing that I'm looking forward to is that the 5-speed Tremec that I've selected has a much larger spacing between the gears so in 1st gear it's like an American Muscle Car with a 4.11:1 differential (so good grunt), but, in 5th gear, it's taller than a TR -- having a 2.50:1 overall drive ratio (so good freeway cruise MPG). I stayed away from going to a modern 6-speed (although I'd like having that) just because they are so much physically larger that the center console and transmission tunnel have to be made much larger and bulkier. The Shop doesn't seem to be in a rush to complete it (because, being in MN, they can't test drive/sort it until after the snow melts) so I'm hoping to get it in about mid-late April -- will post pics.
     

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