Why doesn't the VSS out of 700R4 work in T-56??
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Member
Joined: Jul 1999
Posts: 268
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From: Indianapolis, IN
Car: 89 Formula T-Top
Engine: 388 MiniramII
Transmission: T-56
Axle/Gears: 3.27
Why doesn't the VSS out of 700R4 work in T-56??
What is the big deal here? Is the diameter different for the 700R4 VSS than the T-56 VSS? It seems like it would be easier to make an adapter than to wire up a box that adjusts the pulses. Or is there something else going on here?
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'89 Formula 383 TPI
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'89 Formula 383 TPI
Member
Joined: Jul 1999
Posts: 327
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From: Stillwater, Oklahoma, USA
Thats a good question. I wanna know too, lets take it to the top.
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L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56
On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.
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L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56
On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.
Thread Starter
Member
Joined: Jul 1999
Posts: 268
Likes: 0
From: Indianapolis, IN
Car: 89 Formula T-Top
Engine: 388 MiniramII
Transmission: T-56
Axle/Gears: 3.27
If nobody knows the answer here than this is a problem. I'm not going to mess with a $90 box thingy with lots of wires if all I have to do to my stock VSS is get it mounted in the T-56 somehow.
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'89 Formula 383 TPI
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'89 Formula 383 TPI
Supreme Member
Joined: Feb 2000
Posts: 1,416
Likes: 0
From: Johnstown, Ohio
Car: 84 Z28
Engine: 355 (fastburn heads, LT4 HOT cam)
Transmission: 700R4
Axle/Gears: 9-bolt, 3.27
Since it appears that your car has the VSS mounted in the transmission, as compared to having a cable, and the VSS being on the back of the speedo head, I think you should be able to use the T56 VSS. I'm not sure about the plug on it, so you may need to change it.
I could be wrong, so you may want to wait for someone else to verify it.
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Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand. (Man, those Fast-Burn heads sitting on it look good!)
Starting to look like the Kicker poster child!
ASE Certified Master Tech
[This message has been edited by JP84Z430HP (edited May 02, 2001).]
I could be wrong, so you may want to wait for someone else to verify it.
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Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand. (Man, those Fast-Burn heads sitting on it look good!)
Starting to look like the Kicker poster child!
ASE Certified Master Tech
[This message has been edited by JP84Z430HP (edited May 02, 2001).]
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
Yah, the two VSS's are different sizes, plus they put out different signals, so they're not compatible with each other.
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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
Supreme Member
Joined: Feb 2000
Posts: 1,416
Likes: 0
From: Johnstown, Ohio
Car: 84 Z28
Engine: 355 (fastburn heads, LT4 HOT cam)
Transmission: 700R4
Axle/Gears: 9-bolt, 3.27
Sorry, I was under the impression that they put out the same signal! Maybe I should look at the manual BEFORE answering questions.
Later
Later
Thread Starter
Member
Joined: Jul 1999
Posts: 268
Likes: 0
From: Indianapolis, IN
Car: 89 Formula T-Top
Engine: 388 MiniramII
Transmission: T-56
Axle/Gears: 3.27
Kevin
so if my stock VSS was the correct diamter as the T-56 VSS than I would be able to mount it into the transmission?
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'89 Formula 383 TPI
so if my stock VSS was the correct diamter as the T-56 VSS than I would be able to mount it into the transmission?
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'89 Formula 383 TPI
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