I'm thinking a set of improved stock replacement mounts. They won't require using different brackets. This way I can keep the cost and effort to a minimum. The biggest differences are in the materials and that I will add something inside to prevent them from coming apart if the rubber peels off its backing plates. I can probably get them in different durometers depending on whether you want a daily driver or a racing buildup.
Those can be next.

If these really take off, I might consider a run of something more ambitious, like a spool mount conversion, or a way of using modern liquid-filled motor mounts in an A-body.

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"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair

What I would like to see addressed is the fore/aft flexibility of the early mounts, perhaps polyurethane would do that. I have seen more than one early A-body with a circle inscribed on the radiator where the engine has pitched forward during a panic stop or mild collision, pushhing the fan into the radiatior. There is precious little clearance anyway and the thick, soft rubber of the stock mounts allows a lot of movement.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

dakight, that happened to my Dart too - in fact, it was the reason why the car was for sale. I'll see if I can come up with anything - probably a different cross-section to give them the same stiffness in compression and tension, but much higher stiffness in torsion and shear.

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"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair

This is exactly why I would like to see vertical-shear mounts just like the very robust '60-'61 items. They saved a few pennies per mount by going to the '62-'66 sandwich-style mount, which is unfortunately just how the car industry works. But even the original rubber (not poly) '60-'61 items last a lonnnnng time without allowing the kind of fore/aft engine flop you mention here. They also do a better job of restraining engine roll about the axis. The '73-up spool-type mounts likewise do a better job restraining the engine, but I'm not sure they have enough cushion to them to be completely acceptable in the earlier cars (which don't have cushion-mounted bodies and other NVH isolation measures added in the early-mid '70s).

As far as liquid-filled engine mounts...color me skeptical. They've always ever seemed to me to have a shorter service life and a much higher replacement cost, without any enormous huge benefit.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Got any pictures of the vertical-shear mounts?

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"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair

Pictures...can probably come up with some if you'll give me some time. I even have NOS vertical-shear '61 mounts. Of course they bolt right onto any year slant-6 engine, but they don't drop directly onto a '62-'66 car, because the mounting tabs (where the mount bolts to the K-frame) are located a little differently). Doesn't seem like this would be difficult to change if one were interested in making new steel brackets anyhow.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I am in for set. Mine are pretty ate up.

Greg

I'm not sure if they are the right ones but doesn't the slant and v-8 use the the same mount? I have a 74 and would like poly's for it but they only have v-8 spool type mounts. If the 62-66 is the same then year one sells a blow prof stye biscuit motor mount.

There is a thickness difference in some years.
Several years ago, I replaced motor mounts. At idle, in gear, there was an ugly noise. It turned out that one engine mount was too short, and the pan was contacting the K-member. The mount (Passenger side, IIRC) was actually for a V8 car. It was about 3/8" too thin.
A new mount from a different vendor, for a Slant six, was thicker and solved the problem.
Sorry, I don't remember the vendors involved, and I can't seem to find the thread on search.

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"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO

No.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Imperial Services is in final stages of tooling for really nice polyurethane left and right mounts, made in America, with internal lock plates, for '62-'66 A-bodies with slant-6s! Just got off the phone with Steve over there, and it surely sounds as if these are going to be the excellent-quality upgrade mount we've been after for quite a few years for these cars. That's the good news. The bad news is that in all likelihood they won't be shipping until 1/07.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Good to hear that, Dan! I haven't been able to give these things front burner status, as I've had a lot of other things to worry about. Glad to hear that someone's picked up this. I might have to order a pair myself.

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"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair

Count me in.

Thanks for the link,

I'm in line too.

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Sex, drags, and rock & roll.
Dick, 225% crazy.
Hobby (cars, that is) Photos link

I just ordered one from Paddock as suggested by Charlie S.

STANDARD OE MOTOR MOUNT
FITS 62-66 A-BODY 170, 225, RH.

Product Number EM2304

Price:$17.95
Quantity:

FYI. Thanks all.