VSS?
Thread Starter
Member
Joined: Jul 2006
Posts: 157
Likes: 1
From: Surrey, BC
Car: 1985 Camaro Z28
Engine: 355 SD TPI
Transmission: 5spd w/Hurst Short Throw
Axle/Gears: 4th Gen 3.42 LS1 Brakes
VSS?
I have an 85 Z28, 305 non computer controlled, converting to a 350 TPI. What VSS will I need to use? I have a T5 tranny.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: VSS?
JamesC
Last edited by JamesC; Feb 24, 2010 at 08:28 AM.
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From: Pennsylvania
Re: VSS?
If you're going to use the 1227730 TPI ECM (90-92), then you'll use the 2,000 pulse per mile signal from the instrument cluster to the ECM at pin C6 (you won't see this in the service manual schematics) and then change the calibration in the PROM to use an optical type sensor. Or, you can use Painless 60116 to pins A9 and A10.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: VSS?
Another question: There were, of course, TPI's in 85. Is the ECM different for that year?
JamesC
Last edited by JamesC; Feb 24, 2010 at 08:52 AM.
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Joined: Nov 1999
Posts: 1,000
Likes: 7
From: Pennsylvania
Re: VSS?
Another question: There were, of course, TPI's in 85. Is the ECM different for that year?
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
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TGO Supporter
Joined: Nov 1999
Posts: 1,000
Likes: 7
From: Pennsylvania
Re: VSS?
From a wiring standpoint, his car won't simply accept a TPI harness from any Camaro/Firebird. Not even a 1985 TPI harness. He will need a custom, stand alone type, engine harness or build/modify his own.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: VSS?
Very informative, thank you--don't think I'll be swapping anytime soon 
.
JamesC
.JamesC
Thread Starter
Member
Joined: Jul 2006
Posts: 157
Likes: 1
From: Surrey, BC
Car: 1985 Camaro Z28
Engine: 355 SD TPI
Transmission: 5spd w/Hurst Short Throw
Axle/Gears: 4th Gen 3.42 LS1 Brakes
Re: VSS?
Yeah i have to build my own harness, as i really only need a standalone system. I'll be using the 7730 ECM.
So I have a small vss box on the back of my speedo, your saying I can tap this to the ECM to get the signal?
So I have a small vss box on the back of my speedo, your saying I can tap this to the ECM to get the signal?
Thread Starter
Member
Joined: Jul 2006
Posts: 157
Likes: 1
From: Surrey, BC
Car: 1985 Camaro Z28
Engine: 355 SD TPI
Transmission: 5spd w/Hurst Short Throw
Axle/Gears: 4th Gen 3.42 LS1 Brakes
Re: VSS?
what is the exact wire from the 85 speedo VSS box that I need to splice into? I want to get all my ducks in a row so I get it right the first time. I'm about to break in a motor on a never tuned TPI engine.
Thread Starter
Member
Joined: Jul 2006
Posts: 157
Likes: 1
From: Surrey, BC
Car: 1985 Camaro Z28
Engine: 355 SD TPI
Transmission: 5spd w/Hurst Short Throw
Axle/Gears: 4th Gen 3.42 LS1 Brakes
Re: VSS?
bump, still looking for an answer as to what wire i splice, and what I change in my .bin file to recognize the vss
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Joined: Feb 2010
Posts: 820
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From: OX CA
Car: TOO MANY
Engine: 350 TPI / 350 TBI/6.0L VORTEC
Transmission: T5/AUTO/AUTO
Re: VSS?
http://www.chevythunder.com/fuel%20i...5%20pinouts%20
Last edited by juanillox8; Mar 28, 2010 at 01:34 AM. Reason: typos
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