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If you opt to replace you cam, be sure to find an oil with a high ZDDP content. Older flat tappet cams need the extra additive to prevent excessive wear. Modern oils had the ZDDP content reduced to keep from trashing the catalyst. Most Diesel rated oils such as Valvoline 15-40 all fleet or...

Note the factory carb has a cutout on the base plate to get vacuum to the PCV. Dave

Most 496 stroker kits are internally balanced, and would therefore run a neutral convertor, you do not need or want a balanced convertor with that setup. Balanced convertors should only be used on a build that needs external balancing. Read the technical specs for your prospective purchase and...

No, thrust should stay the same. The thrust limits end to end movement of the crank and should be unaffected if the crank is cut undersized. The only exception I can think of is if the thrust surface on the crank was damaged and welded up and re-cut to stock specs. As a practical matter...

Buffered valve springs have a second spring inside the coil of the outer valve spring. Dave

Since the pad is blank, this could be a replacement crate engine, fairly common of 4 speed cars as a lot of the factory engines were over reved and blown up. Looks to have been a 375 hp engine as the 350 horse engines were blue. If you pull a valve cover and the engine has buffered valve...

If the engine has a late '71 production date, it is probably a '71 engine, but some did find their way into '72 cars. "71 was a forged crank engine. On the passenger side pan rail about 1/3 of the way back from the front of the engine there is a pad that will be stamped with the VIN number...

Thrust wear can be an indicator of a balance issue. A couple of things that could cause this. Firstly, how many miles are on the engine and is it the correct year for the car? If someone dropped in a junk yard engine the components might be mismatched. There is a machined pad on the top of...

If the engine runs you should start by checking the oil pressure with a gauge. If it has normal pressure, about 35psi, the cam bearing may have spun. If it does not run, you can check some other things. Turn the engine over with the starter and check each rocker to be sure that they are all...

If the bearings failed that fast, they are probably not getting oil to them. Low oil pressure for some reason will trash the bearings. Low oil pressure is usually caused by worn mains or a lifter that has been dislodged from the galley due to a broken or bent push rod. I assume that you...

I run the "real gas", moonshine free premium. Has sufficient octane for a performance engine and does not leave any nasty carb residue if the car sits for extended periods of time. Dave

I would be running diesel service rated oil with a high zinc content. Modern oils are mostly formulated with a low zinc content to avoid killing catalytic convertors. This is not an issue with your vehicle. These older engines need the high zinc content oils to avoid running the camshaft...

The harmonic balancer has a slot cut in the side of it, the timing mark. Assuming the engine was properly reassembled, the distributor rotor should point to #1 with the mark lined up on TDC on the timing cover. It is also possible to be 180 degrees out of time as the crank makes two rotations...

Since you are going to have to remove the transmission pan to adjust the bands, replace the fluid and filter while you are at it. Band adjustment is straight forward. If you do not already have one, download the FSM at www.mymopar.com. Manuals are a free download. If there is a lot of debris...

Did you get the vibration issue fixed? Dave

You might also want to check to be sure the heat riser is not stuck shut, this overheats the intake manifold and carb. Dave

On an engine with a rusty cooling system, often the block plugs are going to be seized in place. You can try cleaning the area around the plugs and hitting the threads with some good penetrating oil. My luck has usually been that the plugs are too corroded to move. Dave

The connectors on Mopar starter relays would corrode and heat up, this could cause the connector to get loose on the spade. Try cleaning the connections and you can use a pliers to mash the connector to where it fits tightly again. That may fix the problem. If it still does not work, remove...

Sounds like the base idle is set to low, start by letting the car warm up and set the base idle on the driver side of the car to about 650RPMS. The choke cam is used to raise the idle when the engine is cold. The screw should contact the cam step when the choke is applied so the engine does...

You would also want to check the timing chain for excessive slack. A defective timing chain can cause discharge thru the carb throat. You can check the timing chain for excessive slop by manually lining the timing mark up to TDC. Remove the distributor cap, have a helper slowly rock the...