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08-02-2014
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#1 |
Join Date: May 2014
Location: Delaware
Posts: 45
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Trivia Question........anyone know what this Vette Doctors Black Box is?
Found this black box on my car recently and not sure what it is. I'm going to call Vette Doctors this week as I'm sure they know. The builder, Clint Hooper thinks it is to adjust the speedometer when the rear gears were changed. It appears to be spliced into the ECM wiring as well.
Any input is appreciated! 
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Tony 1970 SS Chevelle 396 with a 580 BBC 1974 Corvette Roadster 1990 Corvette ZR-1 Modified #952 1993 Firehawk (His) 2002 Firehawk (Hers) 2008 BMW 335xi DD 1988 S10 Drag Truck - Best ET 10.13@131 |
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08-02-2014
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#2 |
 Join Date: Feb 2011
Location: San Marcos CA
Posts: 1,802
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Re: Trivia Question........anyone know what this Vette Doctors Black Box is?
I guess if you could ID the exact pins on the ecm it is spliced in series with, you could probably figure out what it is doing. A speedo pulse box sounds likely if you have a different gear ratio.
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08-02-2014
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#3 |
Join Date: Nov 2007
Location: Sykesville, MD
Posts: 377
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Re: Trivia Question........anyone know what this Vette Doctors Black Box is?
I've got one of those boxes too, so I would be interested to hear what you learn about it. Car had a lot of work done by VD and it does have 4.10s.
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WAZOO Member '95 Callaway SNAT 450 Aerobody Coupe - Black/Black '92 Callaway SNAT 400 Convertible - Polo Green/Beige '91 ZR-1 #1231 - Arctic White/Saddle (SOLD) '90 ZR-1 #2547 - Turquoise Metallic/Black '89 Callaway Twin Turbo Aerobody Coupe #027 - Black/Black '85 Corvette 454 Coupe - White/Red |
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08-02-2014
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#4 | ||
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Join Date: May 2014
Location: Delaware
Posts: 45
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Re: Trivia Question........anyone know what this Vette Doctors Black Box is?
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Tony 1970 SS Chevelle 396 with a 580 BBC 1974 Corvette Roadster 1990 Corvette ZR-1 Modified #952 1993 Firehawk (His) 2002 Firehawk (Hers) 2008 BMW 335xi DD 1988 S10 Drag Truck - Best ET 10.13@131 |
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08-02-2014
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#5 |
Join Date: Oct 2013
Location: Wichita Falls,Tx
Posts: 604
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Re: Trivia Question........anyone know what this Vette Doctors Black Box is?
The reason I thought it might be related to the gear swap,is that 4.27's were installed. In 1998,the ratio choices were 3.92,4.09,and 4.27. The new Super 44 ring & pinions weren't available,yet.
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Clint & Sherry 1994 ZR-1 White/Red #152 (sold) 1991 ZR-1 Callaway Aerobody #1332 (sold) 1990 ZR-1 Red/Red #952 (sold) 2002 Z06 Torch Red/Mod Red widebody |
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08-03-2014
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#6 | |
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Join Date: May 2014
Location: Delaware
Posts: 45
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Re: Trivia Question........anyone know what this Vette Doctors Black Box is?
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Tony 1970 SS Chevelle 396 with a 580 BBC 1974 Corvette Roadster 1990 Corvette ZR-1 Modified #952 1993 Firehawk (His) 2002 Firehawk (Hers) 2008 BMW 335xi DD 1988 S10 Drag Truck - Best ET 10.13@131 |
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08-08-2014
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#7 |
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Join Date: May 2014
Location: Delaware
Posts: 45
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Re: Trivia Question........anyone know what this Vette Doctors Black Box is?
Talked with Vette Doctors today.........drum roll please
 It's for adjusting the speedo after a gear change.....I was shocked! Clint was right and the best thing about it is they remembered the car.
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Tony 1970 SS Chevelle 396 with a 580 BBC 1974 Corvette Roadster 1990 Corvette ZR-1 Modified #952 1993 Firehawk (His) 2002 Firehawk (Hers) 2008 BMW 335xi DD 1988 S10 Drag Truck - Best ET 10.13@131 |
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08-09-2014
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#8 |
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Join Date: Oct 2013
Location: Wichita Falls,Tx
Posts: 604
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Re: Trivia Question........anyone know what this Vette Doctors Black Box is?
You have a great car,Tony. Hope you enjoy it as much as you can.
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Clint & Sherry 1994 ZR-1 White/Red #152 (sold) 1991 ZR-1 Callaway Aerobody #1332 (sold) 1990 ZR-1 Red/Red #952 (sold) 2002 Z06 Torch Red/Mod Red widebody |
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08-10-2014
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#9 | |
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Join Date: May 2014
Location: Delaware
Posts: 45
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Re: Trivia Question........anyone know what this Vette Doctors Black Box is?
Quote:
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Tony 1970 SS Chevelle 396 with a 580 BBC 1974 Corvette Roadster 1990 Corvette ZR-1 Modified #952 1993 Firehawk (His) 2002 Firehawk (Hers) 2008 BMW 335xi DD 1988 S10 Drag Truck - Best ET 10.13@131 |
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08-10-2014
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#10 |
 Join Date: May 2011
Location: Sydney, Australia
Posts: 2,479
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Re: Trivia Question........anyone know what this Vette Doctors Black Box is?
That is an ERA. Electronic Ratio Adapter.
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Robert J. DeMarco [SIGPIC][/SIGPIC] [COLOR=blue]G[/COLOR][COLOR=red]rand[/COLOR] [COLOR=blue]S[/COLOR][COLOR=red]port[/COLOR] Registry Lifetime Member NCM Lifetime Member #2655 Pacecar Registry Member [COLOR=red]ZOOM Charter Member - ZR-1 Owners of Michigan[/COLOR] [COLOR=plum][I]ZR-1[/I] Registry member since 2012 [/COLOR] [COLOR=black]1990 LPE "368" Aerobody ZR-1, Last ZR-1 built by John[/COLOR] 1991 Callaway Aerobody ZR-1, DRM 500 1991 Shinoda Aerobody Spyder, 1998 Pace Car |
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