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overdrive

Floor shifter detent plate

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I have started making shifter detent plates now. My design allows you to "slap" shift with your factory style floor shifter and not have to squeeze the handle to shift positively from 1st to 2nd, without the chance of going to 3rd. Then, squeeze to make a quick, positive shift to 3rd, without the chance of going into neutral. It works great for racing. There's a company that makes a similar plate, but it's different in that you have to squeeze the handle for a positive 1st to 2nd shift. 

I'll be making these to order, by hand. 

$75, shipped to the lower 48 states. Other areas will need to pay actual shipping costs.  My plate is also cheaper than the other one. 

Dan 

20190203_095933.jpg

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The squeeze of the handle for a 2-3 shift is better than having to do it for a 1-2  shift, I think. I've made and used both. I have this one in my car now.

Dan

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That's a very clever design, Dan!  Good luck with your new plate!

 

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Proud to say that I have the First one Sold!

I will be putting the factory horseshoe shifter back into my red hot rod Monte along with the factory console and this will keep the car the way it is but using factory parts.

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Jared, I hope you like it. You can mount it on your shifter now and check the operation. The front hole of the shifter body is large enough for some vertical adjustment of the front of the plate.

Dan

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I've contacted someone about starting a patenting process. 

Dan

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On 2/10/2019 at 12:00 AM, overdrive said:

I have started making shifter detent plates now. My design allows you to "slap" shift with your factory style floor shifter and not have to squeeze the handle to shift positively from 1st to 2nd, without the chance of going to 3rd. Then, squeeze to make a quick, positive shift to 3rd, without the chance of going into neutral. It works great for racing. There's a company that makes a similar plate, but it's different in that you have to squeeze the handle for a positive 1st to 2nd shift. 

I'll be making these to order, by hand. 

$75, shipped to the lower 48 states. Other areas will need to pay actual shipping costs.  My plate is also cheaper than the other one. 

Dan 

20190203_095933.jpg

 

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Overdrive, do you have any pics of the plate mounted on the shifter?

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In the meantime, shown below is how "the other plate" mounts to the shifter.  I believe Dan's plate mounts exactly the same way but has a different upper profile.

IMG_3463.JPG

IMG_3464.JPG

IMG_3469.JPG

IMG_3476.JPG

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Does this design allow you to shift from low to low 2 without lifting the handle?

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17 minutes ago, Regmon said:

Does this design allow you to shift from low to low 2 without lifting the handle?

If you are asking about "the other plate" (i.e. the original Thompson design), the answer is "Yes, but not with a positive stop."  Just move the shifter handle (without squeezing/lifting)  forward to the Low 2 position. You will hear a click as the follower drops off the  position 2 notch and the tranny will make a normal 1 - 2 shift.  Frankly, that is the way I use mine except for WOT shifting.

As you probably know, the primary purpose of that design is to allow positive, physical stops when shifting between 1 & 2 and 2 & 3.  If you want a positive stop for the 1 - 2 shift, the shifter grip must be squeezed/lifted and then released for a  subsequent positive stopped 2 -3 shift.  As I understand it from prior posts, Dan's plate works in reverse of that order - no squeeze between 1 & 2 (hence the "slap" terminology) and then squeezed for the 2 -3 shift but he can answer that or confirm that himself.

BTW, (again referring to the original design) if you were to "slap" (without squeezing the grip) the shifter forward from low 1, the shifter would likely bypass the low 2 position and hit the solid stop at high 3.  Frankly, during that specific scenario, I am reasonably certain a TH400 would immediately shift from Low 1 to Low 2 but I also doubt that it would shift all the way to High 3 (skipping Low 2) under WOT.  I'm no transmission specialist but prior experience and intuition says it will stay (at least temporarily) in Low 2 as if in "kick down" mode.  What everyone obviously wants to avoid under WOT conditions is moving or "slapping" the shifter into the N (or beyond) positions.  IMO, the term "slap", when applied to shifting, may be a common racer term with a well-know meaning but it sounds somewhat uncontrolled or even dangerous to the uninitiated. 

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I would perfer to slap shift from low to low 2,  then lift lever to shift to drive with a positive stop.(at drive). What sounds like the one overdrive is talking about. 

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Sounds like we now have two great choices to match our personal preferences.  The steps to install either one are probably identical.

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Dennis, thanks for the photo help and explanations. 

Regmon, welcome to the best car club website there is. My detent plate is designed as you understood. There's no need to squeeze the handle for a positive 1-2 shift. You squeeze it for the 2-3 shift. The 1st pic shows in the Park position. 

Dan

20190307_175836.jpg

20190307_175915.jpg

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IF I WANTED TO GET ONE OF THESE FROM YOU HOW WOULD I DO THIS?

 

 THANKS

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I sent you a Private Message. Thank you. 

Dan

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