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IF your balancer came from the engine plant "black", it would have had to have been installed after the engine paint happened and before the engines were spun-up for final checks of oil pressure and compression before being dressed. Possibly "an Imperial designation" that was not normally...

When I looked at the order guide at www.hamtramck-historical last night, on this issue, the noted Newport Spring Special 2-dr interior is the normal Newport interior, just the different colors. In the 1968 model year, 300s could be cloth/vinyl bench seat interior as a "credit option" from...

There ARE parts and pieces that are replaceable in the speedo head assy. At the most, you might need a new odometer drum assy. At least, the plastic retainer that keeps all of the numbers lined up and turning to the next one as the speedo cable spins it (via plastic gears). If there is a trip...

The balancers were painted with the engines, before the engine is "dressed" with accessories, pullies, and such. Our '66 Newport still has its original turquois valance on it. Just my observations, CBODY67

Again, thanks for the additional information and comments. Might need to check the heater water valve and how it works. Vacuum or mechanical cable. Need to ensure it is fully closed in the "A/C" functions. Otherwise, the vac actuators work the various doors to direct air through the hvac box...

Thanks for the additional information and comments. I am NOT sure why they would be messing with the low pressure switch at all? Unless they were shorting across it to get the compressor clutch to engage to charge the system and check performance. That switch should be the last switch in the...

There should be NO cycling switch in your system if the vehicle had to be converted to R-134a. There IS a low pressure switch on the receiver-drier, usually mounted near the condenser on the grille side of the core support. I know the '72 C-bodies had the pressure switch as our '72 Newport...

From the looks of the rubber interface on your stock balancer, I see no rubber cracking and NO misalignment of the two metal pieces (front to back), so "nothing has moved". Which means it should have more rotations left in it. Might sell the hot rod damper and use the money to get the stock...

I suspect the idle speed increase when one port is unplugged has MORE to do with the fact the engine "wants more air" rather than making a more perfect air fuel ratio.

You might double-check the MasterTech items at www.mymopar.com to verify the "correct" way to adjust the "air bypass" used on the 1968 4bbls, just to make sure of what is going on. I know that the hole the idle screw point goes into in the throttle bore, to control the idle fuel flow, was...

One way to check for bowl drainage into the intake manifold might be to see if there was a stronger-than-normal hydrocarbon smell in the oil on the engine's dipstick, before the engine is started after its sitting for days? Of course, the pcv system would evacuate the hydrocarbons form the...

If you want to talk about a "smooth" vacuum source, rather than "floating", you have to consider that EACH intake stroke brings a negative pressure pulse into the system. Same on the exhaust side of things, except it is a positive pressure pulse! The fact that it all happens so fast makes it...

Plymoputh Valiants used a cycling switch for the RV-2 compressor from the factory. To use such you will need to remove the EPR (evaporator pressure regulator) valve at the larger inlet line joint to the rh side of the rear of the compressor. I suspect you could replace the current low pressure...

Seems like there was a particular emissions control device which attached to a port that measured venturi vacuum rather than manifold vacuum? Where does the hvac vac come from? You could always tee into that supply (line for the vac actuators) to run your interior vac gauge? Just some...

NOT to sound flaky, but where is the fuel "flowing back" from? The main fuel line, which attaches to the carb at a level even with the needle and seat? IF the fuel is that high in the float bowl, it seems it would be running other laces, too. Like into the venturis? My respectful question is...

Is the automatic choke blade fully closing? Choke pull-off working AND adjusted correctly? Strong fuel from the accel pump nozzle? Just curious, CBODY67

("Camshaft on the brain? Better get Dr. Aman to do a brain scan to see if the lobes are the correct size and color!)

Seems like the 300 Letter Cars had several paint options, but limited to about three colors. Red, white, and black. If an owner wanted a different color (than the three colors), the "999" code was probably designed for that fact. I would suspect the cars were ordered for customers, unless the...

Rear wheel bearing sounds can be varied, at about 55mpj or so, by swaying the car side to side on the highway. Not a solid sound, but more cyclic in nature. Kind of like a lower-pitched, light "whomp-whomp" sound. As the bearing is loaded and unloaded, the sound intensity will be louder and...

For the mechanic, this might be his first Chrysler 2-piece driveshaft, but probably not his first 2-piece driveshaft. GM used them extensively from about 1960 to the earlier to middle 1970s. From mundane 6-cyl BelAirs to longer wheelbase Buicks and Cadillacs. Plus light-duty pickup trucks...