Turbo 350 or 400 Shifts Too Early/Late Watch This Tuning Video

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  • Опубліковано 23 січ 2025

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  • @mychevy_73
    @mychevy_73 2 роки тому +5

    Thank you for the video.
    My friend just did it in my '73 to match the RPM shift points with my new 383 stroker.
    Now it drives much better!
    Greetings from Poland ✌️🇵🇱

  • @wreckanchor
    @wreckanchor 2 роки тому +4

    At 4:38 in the video you say to get the trans to shift later you go to a heavier weight. I think thats backwards. Dont you use a lighter weight to get later shift points? Hence why some people grind material off the weights to get an even high shift point?

  • @171apples171
    @171apples171 Рік тому +1

    So if i have a LQ4 in front of one of these and i want it to shift at 6500+, i gotta mess with my governor? Theres people talking about the modulator, but i think thats more for changing cruising behavior.

  • @picco68
    @picco68 2 роки тому +1

    Hello I will have to watch this once I get my sound hooked up but I was wondering on my th400 its has a pre set shift point for 1-2 even if shifter is still in low how do we fix that

    • @dragsterstransmissions
      @dragsterstransmissions  2 роки тому +1

      @picco68 ok you will need to get a tramsgo 1--2 kit for your 400. This is the easiest way to get the valvebody to hold in first gear. Remove the valvebody to put in the auto or manual 1-2 shift valve.

    • @picco68
      @picco68 2 роки тому +1

      Thank you for getting back to me

    • @picco68
      @picco68 2 роки тому +1

      The engine builder he ad some of mess with my trans when I got it back it was searching for a gear they said they altered the governor, today I finally got the original springs one was about twice as long as the other they had what looked like a light blue in one side and none in the other I added the full sized one to the missing side will try it tomorrow

  • @nowayhunting
    @nowayhunting Рік тому +1

    I liked your video. If I understand right, I need to put heavier weights in to stay in first longer. I have a 383 stroker with 550hp, turbo 400 built for strip, 3,000 stall, 4:11 rear end. It shifts before I get half way through the intersection. It shifts real soft, that would be modulator? Turn clock wise for a firmer shift? I need it too stay in first longer and shift harder. I can not feel 2nd to 3rd at all. Help, please and thank you.

    • @dragsterstransmissions
      @dragsterstransmissions  Рік тому +1

      @nowayhunting
      Start by turning modulator screw clockwise 2 turns see if that helps. I'm concerned about the soft shifts as you stated the trans is built for strip so it should shift hard on the 1-2 & 2-3 shifts. Let me know

    • @nowayhunting
      @nowayhunting Рік тому

      @@dragsterstransmissions the modulator was turned all the way in. i backed it out 2 turns and no change. could it be low vacuum?

    • @dragsterstransmissions
      @dragsterstransmissions  Рік тому +1

      @nowayhunting
      Could be where is the vacuum line connected too carburetor or intake? Plus I know nothing about your transmission as far as what was done to it? How is it a strip transmission? Does it have a manual valve body? I want to steer you down the right path but need info

    • @dragsterstransmissions
      @dragsterstransmissions  Рік тому

      @nowayhunting
      Here's a thought put shifter in low gear and drive once it gets 40ish mph it should shift to 2nd on its own. Leave shifter in low gear. That will help me

    • @nowayhunting
      @nowayhunting Рік тому

      @@dragsterstransmissions do not know what was and how the transmission was built. local man in town builds them. thats all he does. told him what engine I had and he said he would build it for the strip. no passing gear. he was afraid it would tear it out.
      it shift by itself. I can shift it manually, but I dont. vacuum comes out of carburetor,. I am going to take it back and have him drive it and see what its doing. I had him build other transmissions and they all worked fine.

  • @betojimenez4199
    @betojimenez4199 Місяць тому

    My th400 is shifting 2nd at 7mph and 3rd at 15 mph what weight do I use to shift 3rd around 30 mph?

  • @betojimenez4199
    @betojimenez4199 2 місяці тому +1

    How much oil comes out when Change a governor

    • @dragsterstransmissions
      @dragsterstransmissions  2 місяці тому +1

      @betojimenez4199 a small amount. Best to raise the rear of vehicle and set on jack stands

  • @riverbottomarchery6458
    @riverbottomarchery6458 6 місяців тому

    Hi, I have a 1980 corvette with a 350 engine and a TH350 transmission and everything is stock , no modifications. The problem is the TH350 will not shift into 3rd unless I'm going 65mph and around 3800-4000 rpm, once shifted into 3rd, it runs just fine in drive untill I drop under 45mph and then I have to get back up to 65mph to shift into drive. Ist to second works fine, it shifts at around 15mph and 2600 rpm. I've tried replacing/adjusting the vacuum modulator, pulled the governor and checked the value and it works just fine. Any idea's what could cause this late shift? This transmisson has 65000 miles on it.

  • @hyser53
    @hyser53 4 місяці тому +1

    Will this help keeping it from automatically shifting to second when I manually have it in first?

    • @dragsterstransmissions
      @dragsterstransmissions  4 місяці тому

      @hyser53 no it will still shift to 2nd. You will need a transgo kit to achieve what your wanting to do correctly. Are you working on a 350 or 400 tranny?

  • @botihi7971
    @botihi7971 Рік тому +1

    Do I need to drain the fluid to remove the governor ? If not, how much fluid can I expect to loose ?

    • @dragsterstransmissions
      @dragsterstransmissions  Рік тому

      @botihi7971
      No and you shouldn't lose much just check level when finished

    • @botihi7971
      @botihi7971 Рік тому +1

      Great, Thank you.@@dragsterstransmissions

  • @ronniejohnstone6209
    @ronniejohnstone6209 3 роки тому +2

    I have a '93 Vette (4L60 trans) and changed the rear end gear from 2.59 to 3,54 (dana 36). As you might imagine, my shift points are way too low now (short-shifting). I'm thinking of replacing my stock inner-spring with a 10g, staying with the stock springs. Any advice or guidance you have I'd be grateful for. Thanks--Ronn

    • @dragsterstransmissions
      @dragsterstransmissions  3 роки тому

      Thanks for watching the video. Yes b&m is one company that offers the governor tuning kit. The weights in kit are for bigger rpm changes springs are more for fine tuning. Question how much rpm change did you notice after changing gear ratio? 400 -600 rpm less or are you going mph?

  • @hermanduchmann2103
    @hermanduchmann2103 4 роки тому +1

    I have a 1976 corvette that has shift problems. th350 I believe. Shifts 1st to 2nd at 1800 rpm and 2nd to 3rd at 2800. Adjusted modulater a bit and 2 to 3 shift went to 3200 but 1 to 2 still at 1800. You think governor is the problem?

    • @dragsterstransmissions
      @dragsterstransmissions  4 роки тому

      You can start with the Governor and change the springs. As far as changing the weights depends on what rpm you want it to shift

  • @austinoverholser3907
    @austinoverholser3907 2 роки тому +1

    Ok so my th350 shifts just fine from 1-2 but third gear doesn't come in until 4200 rpm and 75 mph. Would I need to change the weights or just springs?

    • @dragsterstransmissions
      @dragsterstransmissions  2 роки тому +1

      @Austin Overholser start by changing just one spring first. changing springs or weights will also effect the 1-2 shift. Tell me about the vehicle. What it is, gear ratio, tire size, etc. I answer alot of questions so can't recall everybody combos

    • @austinoverholser3907
      @austinoverholser3907 2 роки тому +1

      @@dragsterstransmissions ok it's an 82 el camino with a 6.0l ls has a limited slip with stock highway gear ratio I think it's 2.73. Rear tires are 235 70 15. This trans shifted fine when I had a 454 but I got it rebuilt when I swapped in the 6.0 and now it has the late 3rd shift problem. Has a very mild shift kit

    • @dragsterstransmissions
      @dragsterstransmissions  2 роки тому +2

      @@austinoverholser3907 ok 273 gear so you might start with changing one spring in the governor

    • @austinoverholser3907
      @austinoverholser3907 2 роки тому +1

      @@dragsterstransmissions does it matter witch of the 2 springs and do I need softer or firmer

    • @dragsterstransmissions
      @dragsterstransmissions  2 роки тому

      @@austinoverholser3907 no does not matter which spring. As far as spring firmness depends on how heavy of a spring currently in governor. Generally lighter springs mean earlier shifts

  • @Mr572u
    @Mr572u 3 роки тому +1

    Since the governor is driven by the tail shaft, how would engine rpm come into play?

    • @Kawichemist
      @Kawichemist 3 роки тому +1

      Rpm fling the weights. That opens the oil passages in the throttle body, hence shifts.

  • @jaimeasencio2937
    @jaimeasencio2937 4 роки тому

    hi, i have an el camino 1980 305 th350, first to second gear work fine, but second to third pass earlier, so the car loose power. thats has nothing to do with the modulator ?, i have to adjust something on the governor or maybe change a spring?

  • @keysautorepair6038
    @keysautorepair6038 3 роки тому

    Does the governor have to be installed when running a transbrake or can you just put a block of plate on it

  • @tunnedwrx
    @tunnedwrx 2 роки тому +1

    I’m about to do this on my turbo 350, just to clarify lighter secondary weights increase high RPM shift points, fine tuning would be a heavier spring for higher shift points?

    • @dragsterstransmissions
      @dragsterstransmissions  2 роки тому

      Springs are for fine tuning. Light Springs for earlier shifts.
      Heavier springs for later shifts.
      Changing Weights is where you get into your bigger rpm change. Jegs sells a Governor tuning kit.. Hope this helps. Let me know how you make out.

  • @joshuaherpolsheimer4699
    @joshuaherpolsheimer4699 4 роки тому +1

    My step-dad has a 74 Nova with a th350. He has a motor that revs to 5800. What weights and springs would you use to make it shift that high, it shifts at 4200 rpm now

    • @dragsterstransmissions
      @dragsterstransmissions  4 роки тому

      Is the 1-2 shift at 4200?
      Also is the 2-3 shift at 4200?

    • @joshuaherpolsheimer4699
      @joshuaherpolsheimer4699 4 роки тому

      @@dragsterstransmissions idk. At least 1-2 shift is at 4200. Its all stock

    • @dragsterstransmissions
      @dragsterstransmissions  4 роки тому

      @@joshuaherpolsheimer4699 being that it's a stock Transmission you might need to re program the valvebody with a transgo kit that will get you closer to the goal. The kit also comes with Governor tuning springs.
      What state are you in?

    • @joshuaherpolsheimer4699
      @joshuaherpolsheimer4699 4 роки тому

      @@dragsterstransmissions kansas. The transmission has a shift kit in it done by Neil Chance

  • @brookewoody8620
    @brookewoody8620 3 роки тому

    Di I fine tune my governed to get my 3rd gear to come in at a lower speed

  • @alexisgarcia1750
    @alexisgarcia1750 4 роки тому

    Friend, so if I want to lengthen the shift points of my TH350, I use the heavier governor parts, which the kit offers me? Since I also plan to replace the modulator to an adjustable one because my change points are so fast that they do not allow the correct function of overdrive ...

    • @dragsterstransmissions
      @dragsterstransmissions  4 роки тому +1

      Let's start with what vehicle do you have? Tire size? Rearend gear ratio?

  • @leebraziel2774
    @leebraziel2774 4 роки тому +1

    My th350 wont shift from 1st could this be a issue

    • @dragsterstransmissions
      @dragsterstransmissions  4 роки тому +3

      Good easy place to start. Once removed knock out gear pin, remove gear, then remove valve just like in video. Make sure tiny hole in valve is clean.

    • @leebraziel2774
      @leebraziel2774 4 роки тому

      Guys it was the tv cable. But it is leaking tranny oil from speedo cable and the area u replaced leaking

    • @leebraziel2774
      @leebraziel2774 4 роки тому

      But she is shifting

    • @dragsterstransmissions
      @dragsterstransmissions  4 роки тому +1

      @@leebraziel2774 uhh explain that again

    • @dragsterstransmissions
      @dragsterstransmissions  4 роки тому

      Remove the cable gear. Look through the end of it if you can see through it replace it

  • @Mr572u
    @Mr572u 3 роки тому +3

    The way I see it, heavier weights shift sooner, at a slower driveshaft speed. It’s all relative to the rear end gearing.

    • @dragsterstransmissions
      @dragsterstransmissions  3 роки тому

      Mr572u Answering both comments. There are 2 sets of weights and the springs go in between the weights. So the heavier springs keep the secondary weights closed longer thus allowing later shifts

  • @shannonbartley4898
    @shannonbartley4898 6 місяців тому

    👍