Question???
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Junior Member
Joined: Dec 2003
Posts: 88
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From: Massachusetts
Car: 1986 Chevy Camaro IROC-Z
Question???
A: It's designed not to shift into overdrive if your foot is all the way to the floor. You must be at 2/3 throttle or less before the tranny shifts into OD. So when you hit the top of 3rd gear, you'll have to let off the gas to allow for the shift. But putting your foot back into it will probably cause a downshift resulting in the same problem.
B and M makes a kit modified kickdown valve (part # 70237) which fixes this problem. It costs about $30 and can be ordered through the Summit or Jegs. GM also makes a modified upshift valve which it included in police packages and that part # is 8673948 and sells for around $15. This will allow the tranny to shift into OD at full throttle.
B and M makes a kit modified kickdown valve (part # 70237) which fixes this problem. It costs about $30 and can be ordered through the Summit or Jegs. GM also makes a modified upshift valve which it included in police packages and that part # is 8673948 and sells for around $15. This will allow the tranny to shift into OD at full throttle.
Supreme Member
Joined: Jan 2002
Posts: 1,370
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From: Las Vegas, NV
Car: 1990 Iroc-Z
Engine: L98
Transmission: 700R4
This will not help your 1/4 mile time - because by the time you would need a WOT 3-4 shift you'd be well beyond 1,320 feet
(1/4 mile)
This WILL help if you find that you get into 'play races' on the freeway sometimes - then you would need a WOT 3-4 shift so you don't get SMOKED
(1/4 mile)
This WILL help if you find that you get into 'play races' on the freeway sometimes - then you would need a WOT 3-4 shift so you don't get SMOKED
Supreme Member
Joined: Dec 2003
Posts: 2,391
Likes: 1
From: Newark, DE
Car: '86 Camaro, '02 WRX, '87 K5, '67
Engine: 350 TPI, 2.0turbo, 383 in the works, 289-4BBL, 232, A-head 4-cylinder
Transmission: T56, 5-speed, 700R4, C4, T176, semi-auto 2-speed
Axle/Gears: 3.73, 3.90, 4.88, 3.55, 3.54, 7.00
Just to clarify the B&M kit will not make the trans upshift into 4th gear at WOT. It will prvent a downshift at anything less than 3/4 throttle. It actually has nothing to do with the upshift. I installed the valve in my Blazer. The GM part is what you need.
This won't do anything for your 1/4 times, unless the car is really fast and has super tall rear gears, and actually needs 4th gear to get through the quarter.
This won't do anything for your 1/4 times, unless the car is really fast and has super tall rear gears, and actually needs 4th gear to get through the quarter.
Senior Member
Joined: Oct 2003
Posts: 818
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From: Dixon IL
Car: 2013 Challenger RT
Engine: 5.7
Transmission: 6 spd
Axle/Gears: 3:92
When I bought the "B-Car Fix" Part #8673948 for new factory upshift sleeve for WOT upshift into OD. I was under the impression that it replaced the TV valve. It doesn't, it goes in on the other side of the valve body in place of the 3-4 shift valve. I have an ASTG manual and it shows the placement.
I just gave the part number to the guy at the GM parts counter and he ordered it for me. Cost me $19.95. I have seen it cheaper at online GM parts houses but I would have had to pay for shipping too.
Installatin requires removing the valvebody. If you have ever installed a shift kit its an easy no brainer.
I just gave the part number to the guy at the GM parts counter and he ordered it for me. Cost me $19.95. I have seen it cheaper at online GM parts houses but I would have had to pay for shipping too.
Installatin requires removing the valvebody. If you have ever installed a shift kit its an easy no brainer.
Thread Starter
Junior Member
Joined: Dec 2003
Posts: 88
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From: Massachusetts
Car: 1986 Chevy Camaro IROC-Z
ok i have never even looked at a transsmission nevermind installing a shift kit wich would probly be a nice thing to have so if i buy this part and a shift kit and drop it off at a shop how much do you think it will cost
Senior Member
Joined: Oct 2002
Posts: 603
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From: Ohio
Car: 1985 Iroc-z
Engine: 355 sbc
Transmission: 700r4
most shops here charge 75 bucks an hour labor charge to remove/install tranny, to take the pan off, etc...
dont know about installing the actual kit though
dont know about installing the actual kit though
Senior Member
Joined: Oct 2003
Posts: 818
Likes: 0
From: Dixon IL
Car: 2013 Challenger RT
Engine: 5.7
Transmission: 6 spd
Axle/Gears: 3:92
If you are mechanicaly inclined, and have worked on cars before it is not a bad job at all, took me 3 hours the first time I did one and I had never seen the inside if a transmission either. Get the part and the shift kit and look through the instructions. You be the judge of weather or not to do it. I say if you have a good set of tools, try it. If you think it is going to be too tuff, there is nothing wrong with paying someone to do it for you, but its going to be around two hours maybe three in labor.
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