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Update: Regarding the cam concentric not operating the fuel pump arm/lever. I finally got back to working on resolving a couple of issues with car. I removed the distributor and looked in the hole at the area between the distributor gear and the front camshaft journal. There appears to be a...

Thanks for the very informative info. I'll definitely check the u-joint end alignments. I'll be taking it apart early this week to install the new tailshaft bushing. I'll provide an update when it's back together - and after a test drive. Thanks again for the info.

I did drive the car with the big tires/wheels. The vibration was the same as it is now when driving up to ~ 60 mph. I will change out the tail shaft bushing, bearing and seal when the parts arrive early next week to see if this helps.

OK. That's easy enough to do. Thanks for your thoughts.

The vibration starts when the car gets going from about 25 mph and continues. There is no play in the rearend yoke, drive shaft is new, balanced and with good u- joints. Drive line angles were set to specs. I have car on lift and checked the front yoke going into the trans tail shaft. I...

I have set the drive line angles using an angle to the correct specs I had looked up (I believe it was ~ 3 degrees) and installed the thin angled shims to get the adjustment right. There was still no change and the buz like vibration was not eliminated. I suppose I could pull both axles and...

Thanks. I'm going to install 2" wheel spacers on each rear side that I found on an eBay site. They are new Ford / Dodge billet spacers and were only $35. I'm not a big fan of spacers, but thought I would see if they would make any difference when driving. They should bring the rear...

Posted some photos on the garage photo section of this forum - under Frank's garage.

There isn't any play in the rear yoke. Both ends of the drive shaft u-joints are also nice and tight and the shaft was recently checked for balance. There is however a small drip from the rear yoke pinion seal. Nothing major right now - but I'll replace the seal at a later time. Thanks for...

being fairly new to the site I had posted this topic in the "conversations" section rather than the correct forum. So I will now post it for anyone to respond. I have a 72 Challenger with a 440, 727, and 8.75 rear with 3:89 ratio. The previous owner had installed an A body complete rearend...

I will remove the distributor and visually look down in front of the oil pump drive gear to check the cam concentric - although, earlier, when working under the car, I held a wooden dowel that I inserted into the fuel pump push rod hole and had someone turn the engine over - no movement in or...

The car was with the vibration and the electric fuel pump when I purchased it last year. So, to answer your question, it's been this way for sometime. Again, I will attempt to contact the previous owner (who owned the car for the last 25 years) and who did or had someone do the mods relating...

Thanks for the scientific approach to diagnosing this problem - I'll certainly try to pin point the vibration using your suggestions. To answer your question, I bought the car with the big block and 727 already installed - just had to refresh the interior, change out the big wheels, engine...

Thanks for all your interest. I'll start working to figure out these 2 issues when the weather warms up a little more. In the interim, I will try to make contact with the previous owner and ask him to see if would know anything regarding the "missing cam lobe concentric and vibration problem...

Thanks for the quick response. I haven't changed out the cam yet - For now, I just put a less noisy electric pump on and isolated it with rubber bushings. I discovered (to my surprise) the push rod missing when I pulled the pump late cover off and the pipe plug accces bolts. I ordered a new...

I recently completed restoration of a 1972 Challenger that someone had installed a 440 ci. 4 barrel with 727 transmission. The vehicle was straight, rust free and was a good candidate for a Vanishing Point (Kowalski) clone/replica. The alpine white paint came out great and I refreshed the...

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