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#1 |
Registered User
Join Date: Jan 2007
Location: vernon b.c.
Posts: 3,022
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a.c & stock heater firewall the same?
Will a ac heater unit fit in the firewall that had a stock non ac unit and vice versa on a 78 truck.It looks like the ac unit is larger on the firewall.I,m talking about the fan and box unit that bolts on the firewall in the engine compartment
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#2 |
Registered User
Join Date: Jan 2007
Location: vernon b.c.
Posts: 3,022
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Re: a.c & stock heater firewall the same?
I found a pic and the ac unit looks quite large,is there a plate to change from the ac unit to a non ac unit ?
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#3 |
Registered User
Join Date: Mar 2008
Location: red deer alberta
Posts: 777
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Re: a.c & stock heater firewall the same?
The hole for the a/c trucks is different than the standard units but it is not hard to modify either way as the firewall is flat in that area.
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#4 |
Registered User
Join Date: Oct 2009
Location: .
Posts: 2,185
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Re: a.c & stock heater firewall the same?
the hole is in a different spot and is in a different shape, i put ac off a 79 on a 78, and the 78 did not have a/c previously.
i made a template off the a/c cab. layed it on the other cab, cut the whole bigger and filled in the rest, drilled some holes and mounted up the box 79 firewall ![]() 79 firewall with template ![]() 78 firewall after modification: ![]() all painted ![]() the box ![]() |
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#5 | |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,194
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Re: a.c & stock heater firewall the same?
Quote:
I like the note on your template... ![]()
__________________
Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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#6 |
Registered User
Join Date: Oct 2009
Location: .
Posts: 2,185
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Re: a.c & stock heater firewall the same?
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#7 |
Registered User
Join Date: Jan 2007
Location: vernon b.c.
Posts: 3,022
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Re: a.c & stock heater firewall the same?
Ok thanks,it just that a friend has a truck up north but he doesn,t want the ac [no use up there]and he will trade me for mine[and i need air down here in the summer]We were just wondering how they would inter change but it looks I have to do some cutting and he has to make a plate
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