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Old 12-13-2021, 12:23 AM   #1
dontknowyou
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Question 940 dash in a 780

Hello. The dash in my 780 is in very poor condition and I would like to swap in something in good condition. I was thinking of the newer 940 dash with the trapezoidal instrument cluster as they seem much more durable. I know the windshield in the 780 is different but the firewall and under dash structure seem to be identical. You guys reckon it would fit?
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Old 12-13-2021, 09:48 PM   #2
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HVAC ducts are totally different. I already tried it.
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Old 12-14-2021, 05:48 PM   #3
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HVAC ducts are totally different. I already tried it.
Too different to get the ducts and swap those too? I am most worried about the windshield/firewall fitment. Could you tell me more about what you did? I'd really appreciate the knowledge of someone who's tried it.
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Old 12-14-2021, 09:16 PM   #4
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Find a nice 740 dash.
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Old 12-14-2021, 10:10 PM   #5
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Best that I can remember the fire wall was part of the ductwork.
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Old 12-15-2021, 11:17 AM   #6
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Best that I can remember the fire wall was part of the ductwork.
can you spare a bit more detail please?
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Old 12-15-2021, 11:19 AM   #7
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Find a nice 740 dash.
I have yet to see one without cracks :( hearing that it cant be done with a 940 one is rlly daunting
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Old 12-15-2021, 08:41 PM   #8
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The 780 defrost duct is totally different from the other 740/760. Look at yours.
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Old 12-15-2021, 08:53 PM   #9
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The 780 defrost duct is totally different from the other 740/760. Look at yours.
My car will not be seeing winter frost, so I can do without. Will the 940 dash physically not fit or can I just settle for no defroster?
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Old 12-16-2021, 11:10 PM   #10
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I quit my swap because of the duct being different so I cannot say it will fit. Before Mopar e bodies had repop dashboard there was a company called Just Dashes. Maybe check them. Or get a dash mat?
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Old 12-17-2021, 02:55 AM   #11
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I was thinking of the newer 940 dash with the trapezoidal instrument cluster
How much rewiring are you planning to do?
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Old 12-18-2021, 01:45 PM   #12
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How much rewiring are you planning to do?
I am very comfortable with rewiring. I am prepared to rewire the instrument cluster as a given. The other controls are a minor task in comparison. I am mostly concerned with physical fit.
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Old 12-18-2021, 01:46 PM   #13
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I quit my swap because of the duct being different so I cannot say it will fit. Before Mopar e bodies had repop dashboard there was a company called Just Dashes. Maybe check them. Or get a dash mat?
haha dash mat wont cut it. I checked out their site. They do great work. I am going to contact them about doing my door cards too as well as my dash. I greatly appreciate you sending me their info. Cheers
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Old 12-19-2021, 06:45 PM   #14
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haha dash mat wont cut it. I checked out their site. They do great work. I am going to contact them about doing my door cards too as well as my dash. I greatly appreciate you sending me their info. Cheers
Interested to hear how you make out with them for the dash for a 780.
Patrick
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Old 01-06-2022, 12:55 AM   #15
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Interested to hear how you make out with them for the dash for a 780.
Patrick
I will update this if I go through with it.
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Old 01-28-2022, 09:49 AM   #16
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Best that I can remember the fire wall was part of the ductwork.
Nope. Dash has parts of ductwork on it, whichwill either fit or it won't, depending on which version of HVAC box donor and reciever cars had. OP contacted me, I shared with him what I could remember from my "940 dash into a 740" conversion from years ago. Hopefully, we'll come up with a how-to one of these days.
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Old 01-29-2022, 09:53 AM   #17
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If you get all the HVAC ductwork out the donor 940, perhaps it would be possible to make hybrid ducts out of the two that mate with the 780 unit & 940 dash ducts. Plastic welders work well once you practice.
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