90 heater box question - ZR-1 Net Registry Forums

Corvette95 · 10-02-2020

Finishing up my 90, seems the heater a/c fan is weaker than my later C4?s, I know the usual suspects and have my outside heater box sealed tight as well as the split seam. There is a cutout on the heater box where the actuator is on the passenger side to the outside, is that opening supposed to be open or am I missing an insert there? See circles portion of pic below. I know some have run a double 12 volt connection to the fan, but I want to clarify this cutout first . Thanks
IMG_6165.JPG

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Corvette95 · 10-02-2020

The actual cutout in real life is lower than the pic, right beside the vacuum actuator not above it

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Corvette95 · 10-02-2020

Got it fixed. Thanks

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10-02-2020	#1
Corvette95 Join Date: Jan 2006 Location: Decatur, AL Posts: 1,119	90 heater box question Finishing up my 90, seems the heater a/c fan is weaker than my later C4?s, I know the usual suspects and have my outside heater box sealed tight as well as the split seam. There is a cutout on the heater box where the actuator is on the passenger side to the outside, is that opening supposed to be open or am I missing an insert there? See circles portion of pic below. I know some have run a double 12 volt connection to the fan, but I want to clarify this cutout first . Thanks IMG_6165.JPG Sent from my iPhone using ZR-1 Net Registry __________________ Corvette95 Registry and Forum (*************) 1989 C4 Conv Wht/Gry Auto Hardtop Top Flight SOLD 1995 C4 Coupe Purple/Blk 6 Speed 1989 C4 Conv Wht/Red Auto SOLD 1996 C4 Conv Black/Tan Auto SOLD 1994 C4 Coupe Wht/Blk SOLD 1995 C4 ZR-1 White/Gry #278 Dual Dunn Head SOLD 1986 C4 Coupe Black/Red 4+3 SOLD 1990 C4 ZR-1 Red/Red #0454

10-02-2020	#2
Corvette95 Join Date: Jan 2006 Location: Decatur, AL Posts: 1,119	Re: 90 heater box question The actual cutout in real life is lower than the pic, right beside the vacuum actuator not above it Sent from my iPhone using ZR-1 Net Registry __________________ Corvette95 Registry and Forum (*************) 1989 C4 Conv Wht/Gry Auto Hardtop Top Flight SOLD 1995 C4 Coupe Purple/Blk 6 Speed 1989 C4 Conv Wht/Red Auto SOLD 1996 C4 Conv Black/Tan Auto SOLD 1994 C4 Coupe Wht/Blk SOLD 1995 C4 ZR-1 White/Gry #278 Dual Dunn Head SOLD 1986 C4 Coupe Black/Red 4+3 SOLD 1990 C4 ZR-1 Red/Red #0454

10-02-2020	#3
Corvette95 Join Date: Jan 2006 Location: Decatur, AL Posts: 1,119	Re: 90 heater box question Got it fixed. Thanks Sent from my iPhone using ZR-1 Net Registry __________________ Corvette95 Registry and Forum (*************) 1989 C4 Conv Wht/Gry Auto Hardtop Top Flight SOLD 1995 C4 Coupe Purple/Blk 6 Speed 1989 C4 Conv Wht/Red Auto SOLD 1996 C4 Conv Black/Tan Auto SOLD 1994 C4 Coupe Wht/Blk SOLD 1995 C4 ZR-1 White/Gry #278 Dual Dunn Head SOLD 1986 C4 Coupe Black/Red 4+3 SOLD 1990 C4 ZR-1 Red/Red #0454