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The block has cast in part number 4006630-440-7, but then just above that is another set of cast in numbers 9 * 18 * 74

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The crank dampener is the tapered "bullet" type, and the pulley is 4 groove. Never saw that many before. I'm sure it has a cast crank because of all the info I have found concerning the E on the milled pad by the intake, after the 440.

There seems to be conflicting info every time I look at data on the 440 Source website pictures. According to them, the bellhousing mounting area was changed slightly for all 75 and later engines and has a slight stepped area where the oil sending unit installs. Mine does not look like that, but is a continuously round shape as the pre 75's had. But then the crank dampener info and pictures say that the bullet type dampener was only on 76 and later engines.

This engine does not appear to have ever been apart and has factory stickers still on the valve covers.

I don't know what to think. I guess I need to provide pictures when I can and let you guys hash it out as to what the heck I have.

Thanks for your input so far.

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I will wager it is the same as mine.

the bullet damper is a external balance crank shaft, it will need a weighted TC from a 383/400/cast crank 440. ( I used a stock 400 weighted TC on mine )

it most likly has the LY rods and 452 heads that use the small "peanut" plug with a tapped seat/no washer.

these heads also have extra cooling ports/steam holes around the plug seat area from what I have read and nee to becarfull when port/polishing them.

the rear of the block where the big bell shaped oil sender is sounds about right with the step area but has a nice round mating surface for the trans bell.

did you check for the yr and cubic inch on the block sidewall?

is it a front sump? rear sump? center sump? oil pan?

di you see a double oil pan gasket with the windage tray inbetween gaskets?

mine had a front sump with windage tray, i turned the windage tray around and used it with a rear sump truck pan.

does it have any motor mount brakets bolted to the block? that could be a clue.. mine had MH/60-71 swept line truck mounts and came out of a 1 1/4 ton MH chassis.

sounds like one of the last lopo smogger dinosaurs from a HD truck chassis to me.

pics are good here is a shot of mine showing the oil sender area. this what you talking about?? do the pullys look like the 2nd pic? IIRC my crank pully is 4 grooves but i only use the 2 rear grooves running the wp/alt with PS it is 1 belt to each on the 2 rear grooves again.

can you confirm.. oil pan/plugs/windage tray/motor mounts/block cast date ?

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I have a 440 engine that has some conflicting information on it, at least as far as I can figure.

The block has cast in part number 4006630-440-7, but then just above that is another set of cast in numbers 9 * 18 * 74

If this is a 77 motor, why the date of sept 18, 74?

The milled pad up by the intake has 7 T440 E
2 25 2

Which seems to agree with the 77 motor info.

Also, the milled pad down at the oil pan on the passengers side of the block, where the last digits of the vin number belong, is completely blank, other than the factory milling machine marks. Could this have been a replacement block, or did they just forget to stamp in the numbers and letters?

I find it hard to believe someone would go through the trouble to try to fake a 77 engine.

I have pics on my phone if I can figure out how to post them. The intake is a 4 barrel with huge secondary holes. I have no idea what this came out of.

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What I BOLDED above is the IMPORTANT information , the block was CAST in sept of 1974 but for whatever reason it was not ASSEMBLED till Feb 25 of 1977

The 7 is the model year of the vehicle the engine was installed in , T means it was assembled at the Trenton plant , 440 is the cubic inches and the E means it has a cast crank. The 2 25 2 is Feb. 25 and assembled on the 2nd shift.

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JohnRR, the only problem is that the 4006630-440 block numbers were not created until late 1975. 1973, 1974 and early 1975 blocks would have been 3698830-440.

Not that it really matters but there seems to be some errors made somewhere, which is probably not all that uncommon back in those days.

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Then I'm going to ask the real stupid question ... what do you want to know ??

Once you hit the smog era everything is the same ... they are all low compression pigs with cast cranks .

Unless it's the original engine to something you have it's a core that you use the block from and throw the rest of it in the scrap pile .

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JohnRR, the only problem is that the 4006630-440 block numbers were not created until late 1975. 1973, 1974 and early 1975 blocks would have been 3698830-440.

Not that it really matters but there seems to be some errors made somewhere, which is probably not all that uncommon back in those days.

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Then I'm going to ask the real stupid question ... what do you want to know ??

Once you hit the smog era everything is the same ... they are all low compression pigs with cast cranks .

Unless it's the original engine to something you have it's a core that you use the block from and throw the rest of it in the scrap pile .

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RR, shame on you for bringing up that old "thin wall casting" hosepoop. It just isn't so. Now that people have sonic checkers it is known for the lie that it always was.
AndyF's article is the definitive take on the topic.

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