B&M Shift improvement kit ????????
Thread Starter
Senior Member
Joined: Dec 1999
Posts: 656
Likes: 0
From: Northglenn, CO, USA
Car: 91' Z28
Engine: 355-Supercharged
Transmission: 700R4
B&M Shift improvement kit ????????
How does it work, what will it do, and will it damage my tranny. (i dont manually shift all that much just a few times on friday nights)
p.s. this is a little extra question...
Sometimes when i accelerate up a hill with more throttle than ussual i get a popping type sound from the tranny, it does not slip out of gear, does anybody know what that means ?
p.s. this is a little extra question...
Sometimes when i accelerate up a hill with more throttle than ussual i get a popping type sound from the tranny, it does not slip out of gear, does anybody know what that means ?
all the shift kit is is a new plate that goes in the valve body, you do a little work on some minor parts, change the number of check *****. it will make your shifts firmer. won't hurt your trans. some kits allow you to make it manual valve body, rv towing, or street preformance.
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-=ICON MOTORSPORTS=-
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-=ICON MOTORSPORTS=-
Supreme Member
Joined: Mar 2000
Posts: 13,414
Likes: 6
From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
The B&M Shift Improver Kit doesn't come with a new plate... it comes with two small drill bits. You enlarge two holes with one bit, and one hole with another. Kinda sucks, if you ever want to "go back to stock" you can't without buying a new plate.
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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Get the TransGo shift kit instead. Many people on this board have experienced problems with B&M kits. My dad only uses TransGo kits when he rebuilds tranmissions, too. Also, "shift kit" is a trademark of TransGo. 
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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
TGO Supporter
Joined: Jul 1999
Posts: 3,838
Likes: 4
From: Another world, some other time
Car: 86 LG4 & 92 TBI Firebird
Engine: The Mighty 305!
Transmission: 700R4
Axle/Gears: 3.42
Oddy enough, i am one of the few B&M happy campers. 4+ years and still kicking ***. 
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-Justin-
T-Top '86 5.0L LG4 700R4 WS6 Now Bilstein equipped!
T-Top '92 5.0L TBI 700R4
My '86 Firebird Homepage
The F-body Model Kit Pictoral Archive (updated 9/18/00)
There can be only one!!
[This message has been edited by Justins86bird (edited October 25, 2000).]

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-Justin-
T-Top '86 5.0L LG4 700R4 WS6 Now Bilstein equipped!
T-Top '92 5.0L TBI 700R4
My '86 Firebird Homepage
The F-body Model Kit Pictoral Archive (updated 9/18/00)
There can be only one!!
[This message has been edited by Justins86bird (edited October 25, 2000).]
Yes there are very few people who are happy with the B&M kit.
I would take Kevin's advice and spend the extra money on the TRans Go kit.
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1994 LT1 Corvette Convertible
I would take Kevin's advice and spend the extra money on the TRans Go kit.
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1994 LT1 Corvette Convertible
If you have any questions concerning the Trans-Go Shift kit I am sure I can help!!
The Trans-Go Shift addresses the problems the are inherent in the 700R4. There a lot of other things you can do besides the Shift kit. A Corvette servo, .471-.500 main boost valve, .296 intermediate/reverse boost valve, a special pressure regulator valve, etc. Call me and I will try to answer any of your concerns about doing this.
Glad Too help!!!
The Trans-Go Shift addresses the problems the are inherent in the 700R4. There a lot of other things you can do besides the Shift kit. A Corvette servo, .471-.500 main boost valve, .296 intermediate/reverse boost valve, a special pressure regulator valve, etc. Call me and I will try to answer any of your concerns about doing this.
Glad Too help!!!
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ProBuilt,
Can you enlighten me to whether or not the B&M TransPak (NOT the Shift Improver Kit) is ok? I have used both and have had excellent results with the Transpak and it seems like great bang-for-the-buck.
I guess I am asking you if you could, please for my education, compare/contrast the TransGo to the Transpak, if you have any Transpak experience (which I assume you do)
Can you enlighten me to whether or not the B&M TransPak (NOT the Shift Improver Kit) is ok? I have used both and have had excellent results with the Transpak and it seems like great bang-for-the-buck.
I guess I am asking you if you could, please for my education, compare/contrast the TransGo to the Transpak, if you have any Transpak experience (which I assume you do)
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