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    rebuilt 301 vibrates at around 3k RPM or 40 mph

    Perhaps do just one side at a time?
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    rebuilt 301 vibrates at around 3k RPM or 40 mph

    Obviously, the idle mixture needs to be better-adjusted, BUT that has no bearing on what's happening at 1500-2000+rpm. Lightly-seat each idle mixture screw, noting how many turns it takes to get there. Then, from the lightly-seated position, turn each one out 1.5 turns. Then start the engine...
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    1961 Newport oil pan

    I know we are supposed to trust aftermarket vendors' parts listings, but sometimes THEY are going on "hearsay evidence" themselves. Nor do they have the capabilities of researching their listings for accuracy, typically. So best for them to delete something rather than say it will work and it...
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    1961 Newport oil pan

    Just thinking, but for full-size Chrysler cars, I would suspect the major platform change (at least in body shapes and such) happened with the '63 cars, with the '62 and prior full-size cars being the same? Non-Imperial, that is. With the '63 full-size Plymouth and Dodges laying the groundwork...
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    Does a tightly shaking vacuum gauge REALLY mean an ignition problem? Chasing my tail.

    Generally, no adjustments on the BBD metering rods. A carb mixture issue will result in a slowly-wandering vac gauge needle. Something which is happening on one cyl will result in specific movements when the cyl fires. When you adjusted the valves, did one need more adjustment than the...
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    Should I have used new unused plug wires that are 10 years old?

    Considering how lengths can vary on an engine, continuity is a better issue to look for. Look at the different lengths in an inline 6, or a B/RB V-8, for example. After an hour or so gapping the plugs on our '66 Newport 383, I took it to the dealership and asked to get it hooked up to their...
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    Introducing my new-to-me 1961 Newport.....and everything wrong with it.....erm...so far.

    Those stamp codes look more like some inspection codes rather than anything related to the model of car the block came in, to me. Just my suspicion. The "-" number after the casting number probably relates to the version of the casting cores used to cast the block. Such "-" numbers exist on...
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    Introducing my new-to-me 1961 Newport.....and everything wrong with it.....erm...so far.

    The ram induction was only available on the 300 Letter cars. NO other Chryslers from the factory. The inline 2x4bbl was available for installation "after the fact", though. I seem to recall that 413 4bbls could be optioned into non-New Yorkers and 300s, though? With 6-bolt valve covers, the...
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    rebuilt 301 vibrates at around 3k RPM or 40 mph

    Lean is chalky white. Good is white to beige. Never have seen gray. But he carb is for the engine, it's probably ok.
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    rebuilt 301 vibrates at around 3k RPM or 40 mph

    Presuming you have the point dwell set at the correct value and point gap in similar, what does the dwell look like the rpm the roughness starts? If you unplug (capping the vac line unplugged) the vac advance, how might that affect it? Might need to seek out an older repair shop which might...
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    Introducing my new-to-me 1961 Newport.....and everything wrong with it.....erm...so far.

    Sometimes, drums can be the victim of "lot rot" of the friction surfaces. A bit of surface rust in some sections as others are smooth. The surface rust can be worn away after several stops. Can cause a bit of pulsation in stopping, but not pedal pulsations, typically. You're going to need to...
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    Introducing my new-to-me 1961 Newport.....and everything wrong with it.....erm...so far.

    The car looks really good. For a look at what a cross ram induction system looks like on the engine, there are a couple of videos on a dyno session on the Nick's Garage YouTube channel. Many shots of the engine on the dyno and from above. There might be some tricks to dealing with idle speed...
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    Anyone else that has checked their stock 301 compression in PSI?

    I'm not sure what the 301 should return as to compression tests, BUT a 1972 Chrysler 400 2bbl spec'd at about 100psi with a rated 8.2CR. As long as the cyls are within 20psi of each other, I'd call it good. I suspect the earlier 301 and later 400 might have CRs closer to each other than...
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    rebuilt 301 vibrates at around 3k RPM or 40 mph

    This can be one of the first signs of "low hormones", by observation. Been there, done that. "Second guessing" can be good, to remember there are always options that could be employed. "Chirps" when first starting off from a stop can also be a sign of "No Grease". Enjoy! CBODY67
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    rebuilt 301 vibrates at around 3k RPM or 40 mph

    Nothing in the power steering pump to get out of balance. If you feel it in the steering wheel, and the front tires are balanced, it could be a front u-joint. The tell-tale is that it comes and goes. I'm suspecting the u-joint. CBODY67
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    3 forward looks @ cars on the square

    The '55-'56 cars looked good, but the '57s just were so far ahead of anything anybody else was doing it was not funny. A shame that also coincided with other issues on them. Still, I recall an interview with Dave Hols, a GM stylist back then, who said that when the '57 Chryslers hit the...
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    I need to replace floor pans for a 1961 Dart Pioneer 2 door hardtop

    The reason the listing is NOT for your car is the inclusion of "Lancer" and "Valiant" are in the mix, which were COMPACT cars, not cars of your size. The A-body Dart came after the Valiant and Lancer. If all you need are the front floorpan sections, look for similar model year Chryslers and...
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    headers that fit? Or better exhaust manifolds?

    Cast iron HP exhaust manifolds might not fit the long ram intakes due to their up-swept design. In 1962 or so, Chrysler had some large-tube steel exhaust manifolds which look like they were the precursor of the cast iron HP manifolds, but they would not clear the power brake booster and such...
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    1958 Plymouth 318 - four barrel rebuild kit??

    NO. Spreadbores did not exist until QJets in about 1965. 2.25" secondary throttle bores are not in those gaskets. I suspect that eBay kit is for a newer AFB, with the multitude of accel pump shooter gaskets and different base gaskets. The smaller baseplate bolt pattern and smaller air...
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