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Old 05-30-2026, 06:49 PM
SD455DJ SD455DJ is offline
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Default Proto-Systems, Inc. "Hoodscoop Kit"???

Anyone ever see, or heard of, or have one of these electric solenoid operated flapper systems in their shaker? We're looking at a nice '78 180 hp L78 TA that has one installed, probably back in the early 1980's. Here are the installation instructions.

The flapper door is inset about an inch from the rear opening and looks to be bent metal sheet painted matt black hinged from the top. I didn't get any pictures of it, unfortunately.

Dennis
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  #2  
Old 05-31-2026, 10:15 AM
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Skip Fix Skip Fix is offline
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There were a few out there. 81 Z28 also had one with a switch on the accelerator pedal like a TH400 kickdown

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Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune [email protected]
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
1964 Corvette Coupe 327 4 speed
  #3  
Old 05-31-2026, 11:06 AM
SD455DJ SD455DJ is offline
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Thanks Skip! Actually, this has a sliding door, not top hinged. The door moves forward to open, back to close.

Dennis
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  #4  
Old 06-06-2026, 01:19 PM
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Skip Fix Skip Fix is offline
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The 81 Z8 metal pedal bracket had a sliding switch on it. Not sure if they repop the TH400 ones for an F body.

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Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune [email protected]
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
1964 Corvette Coupe 327 4 speed
  #5  
Old 06-08-2026, 07:14 PM
jerry455 jerry455 is offline
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1980 and 1981 had the opening scoop. I used to own a 1980 back in 1981. I bought a THM 400 kickdown bracket for my 1976 Firebird, when my 400 trans gets finished. It was the same bracket for the cowl induction Chevelle. It seemed a common bracket for the accel pedal.

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