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Does anyone here run an HHR fan? If so, what are your impressions? How well does it cool for your particular application?

I was looking at water pumps for my dad's very mild 360 and noticed the auto parts store sells a 6-blade pump and an 8-blade pump. Which is the one to get? I'd assume the 8-blade moves more water. Is that true? Is one for A/C cars and one for non-A/C cars? Thanks!

I'm having trouble keeping my 340 cool when stopped at a light. It runs right at and doesn't get above 190* while cruising, but will creep up steadily to 210, 220 and further etc while stopped. I have a 22" champion 3-row radiator with sealed factory shroud and 17" clutch fan with Hayden...

Anyone know what volume recovery tank is needed for use with a 22"" radiator? I'm adding one to my cooling system. Do they require a different cap than what came with my 22" Champion Radiator? Thanks

I tried bench testing an original A/C switch like the one in the picture below. When I apply vacuum to the vacuum port with all other plugged, there is an obvious leak in all button positions. I'm sure the leak is small, but I'd assume the engine would not like it. How tight are these...

Does anyone know how the heater hoses on a 68 Dart with AC are plumbed? The diagram in the FSM isn't very clear. I think the passenger side heater core hose barb goes to the water valve then fitting on the intake manifold and the DS barb goes straight to the water pump. Is that correct??

I've got a 68 Dart dash I'm trying to put back together. Does the AC/Heater control unit mount from the front side, or the back? I put it in from the backside, and the whole unit seems to sag a bit making the buttons hard to push with the bezel installed. Thanks!

I'm in the process of re-doing my a/c heater box with new door foams, seals and whatnot. I've also modified the A/C portion of the blower box to eliminate the A/C while still providing a functional heater and defroster. My question relates to the switch that directs the vacuum source to the...

Does anyone know what this "air tube" is for? Does it attach to anything? This is on a 68 Dart with AC. I'm in the process of modifying my AC box to eliminate the AC portion so I'll only have a heater and defroster and am wondering if I need to keep this air tube or if I can eliminate it...

Does anyone know where I can find a heater blower squirrel cage? Does anyone make these things?

I'm rebuilding a heater box but don't need every seal and foam sheet in the "heater box foam kit" that DMT has for $80. So, I've decided to make the couple of charcoal foam door sheets I need. Do any of you know what type of foam is used for the internal door in a heater box? I'm assuming...

This is probably a really stupid question, but I'm wondering if an AC heater box can be used for just a heater/defroster. I pulled the heater box this weekend in my 68 Dart AC car thinking I'd get rid of it and patch the holes on the firewall. At first, I was going to cut the vent side off and...

I'm considering removing the A/C heater box out of my 68 Dart. I never use the heater as the car is just a fair weather hot rod and the A/C components are loooong gone. Can I remove the box under the dash and cap the hole for the PS fresh air vent, heater motor, heater hoses, AC lines, etc...

Do you folks know what material a stock 67 fan shroud is made of? Is it ABS, or something different? Thanks!

Just thought some of you folks would want to know- I emailed Hayden to see if they offer an HD fan clutch with a shorter 'jag' style shaft. Apparently they've been looking into this because they've gotten plenty of inquiries from Mopar folks, since their commonly used 2765 jag clutch isn't...

Did Mopar ever make a 17" or 17.5" clutch fan? If so, where would I find one?

What size fan (diameter) came stock on a 67 small block Dart with shroud? Did it have a clutch, or was it direct drive? Thanks!

Which overflow/recovery tank do you guys run? I need to pick one up so I can get my pile to the track.

Do any of you run a factory shroud on your Champion radiator??? What did you do about the open space between the top and bottom tanks and the shroud?? Do any of you who have done this have any pictures? Thanks!

Do any of you guys run a coolant filter to keep junk out of the radiator? What do you use? I've heard of some guys using a shot glass to form a screen filter than just sliding that over the inlet to the radiator and sliding the hose over to help keep junk out of their radiator.

Is there a way to test a thermal fan clutch?

I'm in the middle of installing a new aluminum Champion radiator and have two fans to choose from. Currently, I have a fixed mechanical 17" 7-blade fan. I also have an 18.5" '216' 7-blade clutch fan w/ thermostatic clutch I could use. Which would you choose? Thanks.

I've been researching the numbers on my radiator (2898067). According to the table on this website, here is the info: 68, A body, 22", 225, HI ALT-A/C. http://www.rosevillemoparts.com/reference_radiatorguide.php?SID My question is, what does HI ALT-A/C mean? A/C is obvious, but what...

I've got a 68 Dart with 340 and 22" radiator. I just bought a Dayco C70352 lower radiator hose and it seems too long (not the 'cut-to-length ends, but the middle straight section). Are there different part numbers for hoses for a bodies with 22" radiator vs those with 26" radiators? Also...

I know this is a stupid question, but how big is the hole in the thermostat gasket supposed to be? I bought a felpro 35063 gasket and placed it over my thermostat and it barely overlaps the edge. I'm thinking either the thermostat is too small, or the gasket hole is too large. btw- when I...

I need to drill and tap the 1/4" NPT hole just left of the water neck in my Air-gap manifold to accept a 3/8" NPT fitting. Since I've never tapped a NPT hole before, I've got a quick question... Seeing how the threads are tapered, how deep do I need to run the tap??? I've heard 12 threads...

I have a 22" 4 core radiator in my 68 Dart. I currently have a 6 blade fixed fan with no shroud. Would it be worth converting to a thermal clutch fan with shroud? Where can I get a shroud for this radiator? Are they all the same? Or are they year specific?

Is it possible to remove the heater core from an A/C car without taking the heater box out?

Where can I get a couple caps to plug the holes for the AC lines at the firewall? What threads do they have? Thanks!

I'm in the process of taking all the AC components out of my 68 Dart. If I get a non-A/C box, will it bolt up to the firewall. I realize the firewalls are a bit different. I mainly just want to get rid of the vents. Is there are easy way of making this conversion??? Or should I just cap...