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  #16 (permalink)  
Old 10-14-2009, 04:20 PM
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A lot of patience, a little persistence, 1 can of liquid wrench, a brass drift, and some help from my buddy Stanley, and the timing is set! Thanks again guys...

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Old 10-14-2009, 10:45 PM
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This is from Wikipedia, while not always accurate...this quote is correct according to my first hand knowledge of the Ford 400M.

The Ford 400 engine was based on the 351 Cleveland but was produced with a taller deck height of 10.297 inches compared to the 351C's 9.206 inches. This allowed for a longer stroke while retaining the 351C's Rod-Stroke ratio. These blocks also share the same oiling route in the block. The 400 also featured larger (Windsor sized 3.00 inch) main-bearing journals and had "square" proportions, with a 4.0 in (102 mm) bore and stroke; it therefore displaced 402 cu in (6.6 L), making it the largest small-block V8 made at that time. It was introduced in model year 1971 with a full half-inch (12.7 mm) longer stroke than the 351 Cleveland, making it the longest-stroke Ford pushrod V8 engine. A long-stroke engine has good low-end torque. This was a good compromise given Ford's requirement for an engine to power heavier mid-size and full-size cars and light trucks. The M-block, as it later became known, was the last pushrod V8 block designed by Ford. The M-block also shares some elements with the Windsor engine family: bore spacing, cylinder head bolt-patterns and crankshaft journal dimensions.[1]

The 400 was seen as a smaller and lighter replacement for the big Ford 385 engines, the 429 and 460, in Ford's big cars. Weighing just 80% of a similar big block, it was originally available in Ford's Custom, Galaxie and LTD lines, and in Mercury's Monterey, Marquis, and Brougham. Later, it would power the Ford Thunderbird, the Lincoln Continental, Mark V, mid-size Fords and Mercurys, and Ford light-duty trucks.

The vast majority of 400 blocks use the same bellhousing bolt pattern as the 385 family big-block to make it compatible with the higher torque-capacity C6 transmission used on the large cars and trucks. There were a small number of 400 block castings that use dual bellhousing patterns for mounting an FMX transmission. These castings are rare. The 400 was modified in 1975 to use unleaded gasoline.

Believe it or not, I seen a 1971 400M in a junkyard back in 1985...I thought it was a Cleveland but the tag on the valve cover and VIN told me otherwise. Should have snagged it, it was mounted to an FMX tranny too.

“She may not look like much, but she's got it where it counts, kid. I've made a lot of special modifications myself.”

— Han Solo
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Old 07-25-2010, 05:59 PM
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[QUOTE=carsavvycook]Your distributor should turn, spray some penetrant on it. Check your vacuum advance to make sure it still works, I doubt if it does. Also the breaker plates get loose, and the spark scatters all over.

Just be careful while trying to break it loose, the housing could break right off.

Here are the timing spec's for the 429, and 460 from that model year.

Timing 6 degrees BTDC, distributor vacuum hose removed and plugged.

The 400 6.6L was not made until 1974, I believe you have the 429.

The 5th digit of the VIN should be a K on your vehicle, which makes it a 429. Now that is not necessarily a bad thing, is it?[/

Wender: The 400m came out in 1971 first put into station wagons then into the toriono the 400 was produced in 71 for emissions b/c ford couldn't get gas mileage or pass government regulations and never jump a tooth in timing you will hit a valve.

Last edited by Wender; 07-25-2010 at 06:15 PM.
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Old 07-25-2010, 07:13 PM
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Originally Posted by rebelbill1972
Well, this tennis match of motor size knowledge is highly entertaining. However unless someone has gone through all the trouble to load false info into the data base of Advance, NAPA, and autozone, it is deffinately a 400, and considering the original owner sold it to my father in laws 80 something dad in 02 I'm pretty sure it's all stock and original. It still has the H-85-15 spare in the trunk(never been bolted on) oh and did I mention the owners manuals in the glove box? Now back to my question... Do I pull it or keep spraying untill it turns?
You will find that carb cleaner and a little air to blow the crud from around the edges will soak in and get it loose faster than d 40. Also look at the shank on the distributor doesnt it have Flats to put a wrench( big crescent wrench) on? If you get it loose adjust your timing. Dont pull it whats the sense. Carb cleaner man
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Old 07-25-2010, 08:13 PM
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Just look at what you've started Cobalt327!
(Just teasin' )

Yep, the Ford 400 came out in 1971 passenger cars and was later installed in 1977-82 light trucks.

The last year for the 351 Cleveland was 1974, and it was commonly found in the Torino, Cougar, Thunderchicken platforms.

The 351M was introduced in 1975 -78 passenger cars, and later installed in 1977-82 light trucks.

Wikipedia The M designation is commonly referred to “Modified”, and is derived from the use of both "Cleveland" (block, heads) and "Windsor" (crankshaft) components in the same engine, a modification for the parts' intended application, so to speak.
It was also tagged with the "M" in order to differentiate it between the "C" and the "W".

I know, I know ... it's just about as confusing as a Chevy 383!

Last edited by 66GMC; 07-25-2010 at 08:15 PM. Reason: Named and linked source of quote.
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Old 07-25-2010, 08:28 PM
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To the OP.

That dist is likely siezed to the block as a result of galvanic corrosion between dissimilar metals.

IF you happen to break it off trying to get it out, consider upgrading to a DuraSpark electronic distributor. It's a drop-in as far as the dizzy itself, but you will have to install a module and do some wiring mods as well.
Search here at HR for a diagram.

If you do decide to go this route, use a dist cap, cap adapter, rotor, and wires from the 1977+ application ... which spaces the plug wires further apart and prevents arcing and misfires.

Ford also released a "campaign" distributor in about 1981/82 which was re-curved in order to cure a detonation / hot start problem. I can't recall the dist tag # (E2TE-12127-AA ???) but the vac advance had a "WIN" label on it.

Good Luck
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