Looking for advice

[Roger63]

The other day I removed my hvac box from my 71 roadrunner. I tested all the vacuum pods and they all worked perfectly with a maximum of 6 in of vacuum to actuate. My question is what would you do modernize the factory box or buy a complete new system and modify to work? Nobody makes a direct replacement for 71 b bodies. I read Kern dog's thread on his and that was a lot to do. Any and all suggestions and or supplier info would be appreciated.
Thanks

 

[hanks73340]

Are you looking for a rebuild kit for the box and do you have a/c? If so check out Detroit Muscle Technologies
www.detroitmuscletechnologies.com/71-satellite-roadrunner/

• 
  
  Mopar B Body 71-74 Mega AC Firewall Gasket Set - AUTO
  BXX7174FW10-MA
  DMT Mega AC firewall gasket set for 1971-74 B bodies with auto trans 1971 71 1972 72 1973 73 1974 74 Charger, Coronet, Roadrunner, Satellite Contents3pc Master cylinder to firewall gasket set2pc Clutch pedal bracket to firewall stud sealBrake...
  
  $56.00
  ADD TO CART
• 
  
  Mopar B Body 71-74 Mega AC Firewall Gasket Set - MANUAL
  BXX7174FW10-MM
  DMT Mega AC firewall gasket set for 1971-74 B bodies with manual trans 1971 71 1972 72 1973 73 1974 74 Charger, Coronet, Roadrunner, Satellite Contents3pc Master cylinder to firewall gasket set2pc Clutch pedal bracket to firewall stud sealBrake...
  
  $62.00
  ADD TO CART
• 
  
  Mopar B Body 71-74 Mega Non AC Firewall Gasket Set - AUTO
  BXX7174FW01-MA
  DMT Mega Non AC firewall gasket set for 1971-74 B bodies with a auto trans 1971 71 1972 72 1973 73 1974 74 Charger, Coronet, Roadrunner, Satellite ContentsDriver side fresh air vent box to cowl gasket3pc Master cylinder to firewall...
  
  $56.00
  ADD TO CART
• 
  
  Mopar B Body 71-74 Mega Non AC Firewall Gasket Set - MANUAL
  BXX7174FW01-MM
  DMT Mega Non AC firewall gasket set for 1971-74 B bodies with a manual trans 1971 71 1972 72 1973 73 1974 74 Charger, Coronet, Roadrunner, Satellite ContentsDriver side fresh air vent box to cowl gasket3pc Master cylinder to firewall gasket set2pc...
  
  $62.00
  ADD TO CART
• 
  
  

 

[Roger63]

Are you looking for a rebuild kit for the box and do you have a/c? If so check out Detroit Muscle Technologies
www.detroitmuscletechnologies.com/71-satellite-roadrunner/

• View attachment 1248757
  Mopar B Body 71-74 Mega AC Firewall Gasket Set - AUTO
  BXX7174FW10-MA
  DMT Mega AC firewall gasket set for 1971-74 B bodies with auto trans 1971 71 1972 72 1973 73 1974 74 Charger, Coronet, Roadrunner, Satellite Contents3pc Master cylinder to firewall gasket set2pc Clutch pedal bracket to firewall stud sealBrake...
  
  $56.00
  ADD TO CART
• View attachment 1248758
  Mopar B Body 71-74 Mega AC Firewall Gasket Set - MANUAL
  BXX7174FW10-MM
  DMT Mega AC firewall gasket set for 1971-74 B bodies with manual trans 1971 71 1972 72 1973 73 1974 74 Charger, Coronet, Roadrunner, Satellite Contents3pc Master cylinder to firewall gasket set2pc Clutch pedal bracket to firewall stud sealBrake...
  
  $62.00
  ADD TO CART
• View attachment 1248759
  Mopar B Body 71-74 Mega Non AC Firewall Gasket Set - AUTO
  BXX7174FW01-MA
  DMT Mega Non AC firewall gasket set for 1971-74 B bodies with a auto trans 1971 71 1972 72 1973 73 1974 74 Charger, Coronet, Roadrunner, Satellite ContentsDriver side fresh air vent box to cowl gasket3pc Master cylinder to firewall...
  
  $56.00
  ADD TO CART
• View attachment 1248760
  Mopar B Body 71-74 Mega Non AC Firewall Gasket Set - MANUAL
  BXX7174FW01-MM
  DMT Mega Non AC firewall gasket set for 1971-74 B bodies with a manual trans 1971 71 1972 72 1973 73 1974 74 Charger, Coronet, Roadrunner, Satellite ContentsDriver side fresh air vent box to cowl gasket3pc Master cylinder to firewall gasket set2pc...
  
  $62.00
  ADD TO CART
• View attachment 1248761

Yes car has factory a/c I already have a modern compressor as I just finished installing a march serpentine kit. I'm just trying to figure out which road to take to finish.

 

[hanks73340]

Try Classic Air or Vintage Air for the line kits and condenser and dryer kits.

 

[Jerry Hall]

Rebuild your A/C heater box. All your controls and functions will work as the factory intended. There won't be any this switch does this and that one does that, or worse case a complete new set of controls. If you have moved to a modern compressor, and pulley kit that's perfectly okay. Just my opinion as usual.

 

[diesel_lv]

I've got all original HVAC "inside" my '67 Coronet. Controls included. In the engine compartment, all is modern. Sanden compressor, parallel condenser, new drier and hoses. All new stuff designed for 134. At idle in 120° temps I'm getting 38° at the vent and cruising it gets down to 34°.
Just letting you know the factory stuff works w the modern.

 

[451Mopar]

I rebuilt the A/C box in the '71 Charger. Mostly just needed new foam seals. I just used some generic foam and and cut my own seals.
My Vacuum pods and vacuum lines under the dash were fine (30 years ago).
Needed new lines to and from the vaccum canister under the battery tray, and I had to fix the dash vacuum switch because one of the plastic nipples was broken off.
I could not find an exact replacement, but I think I got one from a Dart?, same style switch, but different vacuum block inside, so I had to split the switches, put the good back onto my switch and JB weld it back together. Works fine.

 

[Roger63]

I've got all original HVAC "inside" my '67 Coronet. Controls included. In the engine compartment, all is modern. Sanden compressor, parallel condenser, new drier and hoses. All new stuff designed for 134. At idle in 120° temps I'm getting 38° at the vent and cruising it gets down to 34°.
Just letting you know the factory stuff works w the modern.

What evaporator did you use? Mine looks like this.

 

[diesel_lv]

What evaporator did you use? Mine looks like this.View attachment 1248942

The evaporator is inside the car in the box right? If so, I just used the factory one. I never took anything from under my dash out. Only thing was on my '67 there is a "mixer??" I think that's half in n half out the firewall for the heat. Had a small leak n had it rebuilt. I got lucky, this was my Great Grandmother's car and has been in dry Southwest climate in a garage every day of its life.