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Modifying a stock 700r4 shifter

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Old Jan 15, 2006 | 10:30 AM
  #1  
blk89 5.7liter's Avatar
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From: Lansing Michigan
Car: 1989 iroc z
Engine: 5.7/350 bored/stroked to 396
Transmission: 700r4 edge 2400 stall
Axle/Gears: 9 bolt 3.27 posi
Modifying a stock 700r4 shifter

I read in a responce to a post a couple of days ago where somebody said something about b&m having a plate or a kit to modify a stock 700r4 floor shifter into a rachet shifter. I did a search and cant find the post now and I dont remeber who posted it. Anybody ever hear of this or know anything about it?
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Old Jan 15, 2006 | 09:21 PM
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86_Dan_Z28's Avatar
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From: So Cal / El Mirage, AZ
Car: 86 Z28
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Here is the part on the B&M website, I hope this helps.

http://www.bmracing.com/index.php?id...bcat=4&pid=305
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Old Jan 15, 2006 | 10:58 PM
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blk89 5.7liter's Avatar
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From: Lansing Michigan
Car: 1989 iroc z
Engine: 5.7/350 bored/stroked to 396
Transmission: 700r4 edge 2400 stall
Axle/Gears: 9 bolt 3.27 posi
Hey thanks! Thats exactly what I was looking for.
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Old Jan 16, 2006 | 11:06 AM
  #4  
BruceEmbry's Avatar
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From: Triangle NC
Car: 82 Ponitac Firebird
Engine: 350 TPI
Transmission: 4L60e/TCI TCU
Axle/Gears: 2.73
Hi all,
Modifying these shifters are not for the faint at heart. I just converted my orginal shifter over to overdrive in my 82 Firebird. The orginal detent brackets are welded in. So before you jump take a very hard look at it.
Attached Thumbnails Modifying a stock 700r4 shifter-clamped.jpg  
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Old Jan 16, 2006 | 04:56 PM
  #5  
e-man's Avatar
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Joined: Jul 2000
Posts: 568
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From: NJ
Car: 89 formula
Engine: 383
Transmission: 700R4
I picked up the B&M kit a couple of weeks ago heres what you get.
Attached Thumbnails Modifying a stock 700r4 shifter-b-m-stock-shifter2.jpg  
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Old Jan 17, 2006 | 03:16 PM
  #6  
poncho@home's Avatar
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From: Laval, Canada
Car: 2004 BMW 330Cic
Engine: 3.0
Transmission: 6 speed
have you installed it yet? If so was it hard to do?
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Old Jan 17, 2006 | 04:31 PM
  #7  
e-man's Avatar
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From: NJ
Car: 89 formula
Engine: 383
Transmission: 700R4
No not yet.Its just drilling/grinding rivits off and swapping plates anybody should be able to do it.
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Old Jan 25, 2006 | 10:26 AM
  #8  
Max's Avatar
Max
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From: Madison, WI USA
Car: '89 Camaro Convertible
Engine: LB9 Heads/LT1 Cam Holley 670 Carb
Transmission: T5 Manual
Axle/Gears: 3.73
I'd be very interested in knowing how the installation went.

Can you only rachet up through the gears or can you racket down through the gears as well?

Let us know how well it works and how much it costs.

Thanks.

Last edited by Max; Jan 25, 2006 at 08:17 PM.
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Old Jan 25, 2006 | 12:49 PM
  #9  
e-man's Avatar
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From: NJ
Car: 89 formula
Engine: 383
Transmission: 700R4
I paid $36 and its PN# BMM-81071 through summit.I'll post how it works when I get some time to install it.
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Old Feb 21, 2006 | 11:32 PM
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Joseph Andres's Avatar
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From: NJ, USA
Car: 1991 GTA Convertible
Engine: 350
Transmission: 700R4
Axle/Gears: 3.73
Any word on the install yet? I just ordered mine from summit.
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Old Feb 22, 2006 | 01:59 PM
  #11  
JPrevost's Avatar
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
Not a true ratchet shifter. From the explination on their webpage they say, "you can bump the stick forward for each gear and not worry about overshifting." As in when you push forward, it won't allow you to go from 1 to 3 or OD, it'll stop at 2 and then require you to push down on the button to push it up to 2, then release button to then be able to push into 3, then push button to go into 4. Or at least that's how I see it as working. A ratchet shifter requires a lot more components than what is provided in this kit.
Maybe I'm wrong, and if I am I'll eat my words but I doubt it . It's still nice because this will prevent people like me, who upshift manually, from thinking they're in 2 or 3 when infact in 4 and going into N over-reving the motor .
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Old Feb 22, 2006 | 03:04 PM
  #12  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
That's how it looks like it works to me too, just based on the shape of the plate. Similar to the way the Hurst Quarter Stick shifters and others work.
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Old Feb 27, 2006 | 09:04 PM
  #13  
92RZ's Avatar
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From: Tennessee
Car: 92 Camaro RS
JPrevost, can you clearify that up a little bit I'm not exactly sure what you mean. I understand how a true ratchet shifter works, but are you saying that with this kit, it would act as a rachet shifter only you would need to push the button when shifting through each gear rather than just hitting it forward?
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Old Feb 27, 2006 | 09:09 PM
  #14  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
It's pretty much as he said. Starting out in first, you can push forward into second, but it hits a stop and you can go no further until you press the button down. Then it will go forward into third, but can't go any further until the button is released.
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Old Jun 30, 2006 | 09:19 AM
  #15  
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Car: 91 Z28
Time to bring up an old post.
Has anyone finished installing this yet? How do you like it?
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Old Jun 30, 2006 | 09:32 AM
  #16  
Joseph Andres's Avatar
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From: NJ, USA
Car: 1991 GTA Convertible
Engine: 350
Transmission: 700R4
Axle/Gears: 3.73
It took a little while getting used to. In order to upshift from 1-2 you HAVE to press the lever to move the shifter up. To go from 2-D you just slap it up. To go from D-OD push the button and upshift again, and the same to go all the way to Park.

Downshifting is the same exact way just in the opposite direction. HTH

It definitely eliminates the chances of overshifting.
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Old Jun 30, 2006 | 09:45 AM
  #17  
jonarotz's Avatar
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Car: 91 Z28
So you have to push the button down to shift from 1st-2nd, you can't just push the stick forward?
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Old Jun 30, 2006 | 09:56 AM
  #18  
Joseph Andres's Avatar
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From: NJ, USA
Car: 1991 GTA Convertible
Engine: 350
Transmission: 700R4
Axle/Gears: 3.73
Doing this from memory, I beleive you can just push it forward from 1-2, then push for 2-D.
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Old Jun 30, 2006 | 12:00 PM
  #19  
Shagwell's Avatar
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From: Southwest Florida
Car: projects.......
button release? Isn't a ratchet shifter then....more like a 1/4 stick.
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