How do you identify a 6 pack 440 motor?

Question

I need to know if the 440 I have is a 6 pack motor. Please tell me what #'s etc. to look for on the motor, thanks!

It is a 1969 HP

This is a complete running motor in a 1968 Charger, not a block.
The "HP" stands for horsepower.
It is not the original motor, so the VIN etc, doesnt help.
It has a German cross on the block.........

Answer 1

Hi Deb,

Simple answer--Only way to externally identify a 440 Sixpack is to measure the counterweight thickness of the harmonic balancer.

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Some spam about that,if ya wanna wade thru it >>>>

A 440 Sixpack is maybe THE hardest engine to identify
of all the American Hi performance engines

"HP" is Hi Performance,,,and was simply stamped on engines
that got "HP" parts bolted-in on the assembly line.
No Difference in HP and HP2,none whatsoever

No Number on the engine identifies them.

Besides the 3-2bbl Intake Manifold,,there's only ONE external feature,,,and that's the Harmonic Balancer/Crankshaft Dampener thingie.

Only Sixpacks had that particular dampener.

Internally--the obvious & visible differences were Few also.
*Pistons had 4 valve releifs in the dome,,,all other 440's had only 2

*Connecting Rods-
'69 part# 3462426 Casting #1851535
Those were "standard 440 rods" but with extra inspection.
("Magnaflux" Crack checking,I 'bleive.???)

In '70 Rods were changed to Casting # 2951908
These are actual "Sixpack Rods",,
Sixpacks were the only engines that used them.
They MIGHT be in some '69's

*Camshaft Sprocket had a 3-bolt attatchment.
All other 440's had One center bolt holding on the Cam Gear.

Obviously,,in order to VERIFY any of those things means WRENCH WORK,,
Remove Cylinder Heads,or Oil Pan,or Timing Cover.

........................................................
Identifying the Balancer is easiest.
It has 2 distinguishing features:

#1 It has the ol' Offset Bolt Pulley---
One of the bolts which holds the Pulley to the Balancer is Offset,,so that the Pulley will only install in That certain position.
(which makes NO difference anyway???)
The Offset Bolt Hole is the one which is aligned with the Timing Mark on the Balancer.

There's a LATER 440 Balancer that looks VERY SIMILAR,
except it's got a LITTLE Thicker Counterweight & All the Bolt Holes are the same--pulley will install in any position.
It can be "tricky" to the eye to tell the 440 balancer from the SIXPACK one.

#2) Sixpack has the Thinnest of all the counterweights,,
among Mopar's counterweighted balancers.
The Weight is .20" Thick on a SixPack,,
and its .25" on the one that "looks like a Sixpack"

The Sixpack is a little over 3/16",
The Other is a little over 1/4"

That's a Small Difference,,,,
.050" ,,about 1.25 mm or 1/16"

Easiest way to measure it without taking the Pulley Off:
Get a 3/16" and 1/4" Drill Bit,,a Good Light,,,and crawl under the car.

Try them in the gap between the Pulley and the Balancer.
"Eyeball" Each bit's thickness in comparrison to the Thickness of the COUNTERWIEGHT.

(Using the Straight end/SmoothShank part of the Bit,,,right? :)

It makes like a "feeler gauge",,and the Difference will be obvious to see if you get a good close look at the Balancer.

Here's an Ugly Old picture to see the Counterweight.
Sorry it's not nice,,,Pics are SCARCE.
At least the Counterweight is Clear and Obvious.

On the page,,the 1st pair of Rusty looking balancers---
Notice the one on the LEFT looks even & symmetrical
on it's face,,surrounding the bolt holes.

The one on the RIGHT is "LIKE" the Sixpack's.
It has the Eccentric,Crescent Shaped Counterweight
on it's face,
In that pic,,the Weight is a thin ring on the Bottom,
and it's Thick/Wide at the top.

I hope I explained that to make any sense,,
it's pretty obvious to see.

http://www.moparts.com/Tech/Archive/bb/22.html

I'd suggest using the "drill bit thickness gauge"
in an area where the Weight's Diameter is Larger,,,
such as from about 9 O'clock to 3:00 in that Pic.

It will be easier to See the Thickness at the shallower Depth


Or any other way you can imagine to Fairly Accurately Measure/Judge the THICKNESS of that Counterweight.

THIN weight is a Sixpack, 3/16" or .20"
Thick weight,,Aint,,,1/4" or .25"

I'm no Mopar Expert,,,but That's the Only External Indication
I know of that distinguishes a Sixpack,,,
besides the Induction set-up of course.

It's NOT 100% PROOF,,,ok?
It's possible to INSTALL that balancer,,,,But I dunno why anyone Would.
They'll ALL "fit" the engine,,,but they are NOT interchangeable.

Somebody can put a 3-2's Intake on ANY Bigblock and it'll work fine.

But a Mismatched Balancer just aint gonna act right,,
So there's No Reason for anyone to try to make a
SixPack Clone by putting on "Wrong" balancer.

Odds are " 99.9%" if It's Got a Sixpack Balancer,,then it IS one.

I know of a few Sixpacks that got switched to 1x4bbl,,2x4bbl.
But the Engine is Still a Sixpack,,even so.

Some people claim to be able to tell by the tag on the Ignition Distributor--the part number.
I know the 4spd and Auto had Different Distributors,,,
and that's ALL I know about 'em.

There's actually Very Little difference in the Performance between all the 440 HP's

Im no Mopar expert,,so I wont swear to any of the above.
But I think it's close to being correct

Hope any of that helps

Answer 2

1

Answer 3

440 Motor

Answer 4

What is a "HP"? If the motor is in a car already, you can check the VIN tag and that will tell you how it was spec'd from the factory. The only sure way to tell with a motor that is out of the car is to compare it to a factory build sheet. You might find some info on 6-bbl casting numbers, but its unlikely. Besides, unless you're doing a full resto job on a car that had a 6 pack, there's no real value in getting a 'genuine' 6 pack block - just build what you want and have fun with it.

Answer 5

If the rest of the car is equal, same trans, rear gears, etc., the 440-6 is quicker in the 1/4 mile. Reason being, the 440 makes more torque, sooner, so it can accelerate quicker from the start. Where the hemi picks up is at the mid to high RPM range.

Answer 6

Does it have three two barrel carburators sitting on top of the manifold?