Simple heater box installation question.... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

lyrikz · 04-20-2009, 12:55 AM

Pretty straight forward. 2 years ago i removed my heater box and inside cab heater box. Now im putting it all back together, is there a procedure on which side you install first? Do you normally put the outside box with the heater core on first, then install the inside box, or vice versa?

Its been son long i just forgot basically. ahaha

JimKshortstep4x4 · 04-20-2009, 04:57 AM

The inside box has mounting studs on it so I install it first as the mounting studs go through the flange on the outside box. You could probably go either way but I find it easier to mount the outside box over the protruding studs after the inside box is mounted.

Jim

lyrikz · 04-20-2009, 12:05 PM

Quote:

Originally Posted by JimKshortstep4x4

The inside box has mounting studs on it so I install it first as the mounting studs go through the flange on the outside box. You could probably go either way but I find it easier to mount the outside box over the protruding studs after the inside box is mounted.

Jim

Thats all i needed. Thank you.

cdowns · 04-20-2009, 12:34 PM

b4 installing the heater box it's a good idea to look inside it and move the lever to make sure the flapper works //it's a real common problem with these trucks that the flapper fails to flap

04-20-2009, 12:55 AM	#1
lyrikz PITbut Join Date: Sep 2007 Location: monroe washington Posts: 3,052	Simple heater box installation question.... Pretty straight forward. 2 years ago i removed my heater box and inside cab heater box. Now im putting it all back together, is there a procedure on which side you install first? Do you normally put the outside box with the heater core on first, then install the inside box, or vice versa? Its been son long i just forgot basically. ahaha

04-20-2009, 04:57 AM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Simple heater box installation question.... The inside box has mounting studs on it so I install it first as the mounting studs go through the flange on the outside box. You could probably go either way but I find it easier to mount the outside box over the protruding studs after the inside box is mounted. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

04-20-2009, 12:34 PM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Simple heater box installation question.... b4 installing the heater box it's a good idea to look inside it and move the lever to make sure the flapper works //it's a real common problem with these trucks that the flapper fails to flap __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY



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