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Author Topic: Drac location  (Read 5052 times)

Offline ehjorten

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Drac location
« on: January 03, 2011, 10:16:09 pm »
Anybody have information on where and how the DRAC would be mounted in a 1991 V3500?  I found it but and it is mounted to a bracket, but the drac and bracket are hanging loose.  It looks like it is mounted with two screws, but I can't see where.
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-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline 78 Chevyrado

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Re: Drac location
« Reply #1 on: January 04, 2011, 02:53:30 pm »
Whats a drac?
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Kenny

1978 C-20, 350/400, 3.73, Graystone Metallic, Raceline Renegade 8 Wheels - 18x8.5, 275/70R18 BFG KO's

Offline ehjorten

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Re: Drac location
« Reply #2 on: January 04, 2011, 04:29:27 pm »
Digital Ration Adapter Controller (DRAC).  It takes the signal from the Vehicle Speed Sensor (VSS) and translates it into a signal that makes sense for the Speedometer, Cruise Control, and ABS systems.

www.tbichips.com/drac/
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-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline 78 Chevyrado

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Re: Drac location
« Reply #3 on: January 04, 2011, 04:43:46 pm »
If I remember right, My 87 had something like that mounted to the backside of the gauge cluster.  Might have been green.
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Kenny

1978 C-20, 350/400, 3.73, Graystone Metallic, Raceline Renegade 8 Wheels - 18x8.5, 275/70R18 BFG KO's

Offline Captkaos

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Re: Drac location
« Reply #4 on: January 04, 2011, 04:55:56 pm »
It should be mounted directly to the speedo.
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Offline ehjorten

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Re: Drac location
« Reply #5 on: January 17, 2011, 09:24:40 am »
Okay...found the proper location for my '91.  The DRAC is mounted to a bracket (which I have) and the bracket is mounted with two screws to the backside of the dash, at the bottom, just right of the steering column.  Found the location in my factory Electrical Service and Diagram book that I got last week!
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-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6
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