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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

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  #1  
Old 10-06-2010, 04:08 PM
SmithBear SmithBear is offline
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330 to 390 "bolt in" questions

Thanks to Numbers Dummy for VIN code info!

Now for a another question!

Have a 330 FT in a 1966 dump truck. I want to put a 60's or early 70's 390 FE in it...

Question I have is will the fly wheel from the 330 bolt up to the 390 crank without problems, or is it not a "universal" bolt pattern?

I know where there is a 390 FE engine and was thinking of making the swap, but I don't want to get into a money pit!

Thanks in advance!
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Old 10-07-2010, 11:09 AM
Mike G Mike G is offline
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I am assuming the 390 has an auto bolted to the back? One thing you will need to consider is the engine mount pattern. I am venturing to say the engine mounts on the 330 are on the front and bell housing, where the 390 has side stands. The balancing of the two should be OK, I remember that it was the bigger motor (428) where you need to be concerned with interchange of flywheel components.
--Mike
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The Ford related items representing 1/3 of what's in the garage....
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1968 Cougar XR7 (wife's toy)
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Old 10-07-2010, 02:47 PM
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To clarify, I know the 390 will mount in place of the 330 without any worry for the motor mounts and size (I already checked that out.) The 390 I am looking at is backed up by a manual transmission.

The difference I am wondering about is in the flywheel size and bolt pattern. I think the clutch on the 330 is 13 inches, since it is in a dumptruck (F 600 series), which means it won't bolt to a 390 pressure plate.

Ideally, I would like to mount the fly wheel from the 330 to the 390, that way everything behind the motor will still work properly.

So, will the flywheel from the 330 bolt up to the 390?
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Old 10-07-2010, 05:42 PM
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Issues will be the front at the crank. The 330 uses a larger diameter snout that will need to be sleved on the 390. You must reuse the 330 front timing cover and mount. As they are larger at the spacer.

330 and 390 flywheel will interchange as each engine is a internal balance within the same family.

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Old 10-07-2010, 08:05 PM
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I must not be explaining myself well or I just don't get what you are trying to tell me. The 390 is a complete engine that will bolt in. No need to do anything with the 330 crank snout. Want to remove the complete 330 and install the complete 390. Just need to know if my existing flywheel with the pressure plate and clutch will bolt to the crank shaft of a 390 that is currently in a 4x4 pickup with a 4 speed behind it. I don't believe the pressure plate and clutch currently in the F 600 dump truck will bolt to the 390 flywheel. Much larger pressure plate and clutch in the F600. But if the flywheel behind the 330 will bolt to the 390 crankshaft it all works. Just don't know if the bolt pattern on a 330 MD flywheel to crank is the same as on a 390 flywheel to crank.
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Old 10-08-2010, 12:59 AM
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Let me be a bit more plain

You have a F600 with a FT engine that uses a unique to the FT engine series a front cover and front engine mount in a heavy duty truck. It has provisions to accept the stamped steel support

The 330 oil race is integral to the Damper and this provides the oil seal inner race.

Therefore there is no spacer like behind the damper in a 390.

The spacer on a 390 is not the correct outer diameter. Therefore the FT seal will not work with a FE spacer.

To mount the FE you must use the FT parts and have a custom spacer made to the correct seal ID. Ford service may have had a part to accomplish, ND can confirm.

The FT crank will accept the FE flywheel and the FE will accept the FT flywheel. As i posted before they are each internal balance in the same FE/FT family and have the same bell housing pattern.

It was common to use a FT crank in racing in a FE as it is forged steel. They just cut down the crank snout to accept the smaller ID spacer and seal race.

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Old 10-08-2010, 10:08 AM
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Well think maybe I am begining to understand. In another thread it talks about replacing a 330 with a 390 and that all the casting and mounting holes are the same in both blocks. My 330 is a front engine mount that feels like the bracket is bolted to the block with 4 bolts. Much oil and grime on the front of this engine so feeling the 4 bolts in the mount has been the best I could do. By the way the 330 block also has the taped holes in the block for side motor mounts. Guess my mistake is thinking the front motor mount is just bolted to the block with the 4 bolts I can feel, and you are telling me that mount is part of the block front cover and not just a mount bolted to cast holes in the block. Must be that the crank front pully is also a part that comes through the mount. Am I getting closer? Sorry to not understand, felt like the 4 bolts went though the front mount bracket into the block, not that the bracket is part of the engine front. Hope I am getting close. If that's the case and it takes machine work to make all this happen, probably should just put an engine kit in the 330. Colser? Thanks a bunch for the patience.
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Old 10-08-2010, 02:30 PM
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The bracket used the four bolts to the block through bosses cast in to the front cover.

The 390 stock cover does not have these. Spacers may be able to be added but that is a lot of verticle shear weight on the mounting bolts.

A 65 66 F350 or 65 4x4, 66 F250 4x4 with a 352FE will have the boss cast in the cover also as they use a front mount that is similar in mounting to the block.

You will also not be able to use the exhaust manifolds from your FT on the FE heads as they are a different pattern.

You may also run in to issues with the pilot on the 390 as it is not drilled to accept the larger clark, spicer and fuller transmission input shafts.

The bore on a 330 is able to be taken out quite a bit and rebuilds just like a FE.

I would opt fot the kit and rebuild the all ready good base you have.

Garbz
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Old 10-09-2010, 06:33 PM
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Garbz2, I won't need to try and use the 330 exhaust maniforld, I will have a "complete" 390. Why do I need to worry about the pilot shaft size on the 390 flywheel if my 330 flywheel will bolt to the 390 crank as you said? Thanks SmithBear
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Old 10-09-2010, 07:19 PM
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The 330 exits in a complete different place than the FE you need the FT manifolds to run the exhaust. The passenger FE manifold exits straight back. The FT exits straight down. It may work or it may not.

Bolting a flywheel on is one thing, not able to install the transmission due to the pilot hole in the crankshaft being too small is another. The FE crank must be machined to accept the larger transmission pilot. The flywheel does not center or support the input shaft of the trans.

Garbz
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Old 10-09-2010, 07:40 PM
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That helps / Thanks Sir.
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Old 10-09-2010, 07:40 PM
 
 
 
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