Hello fellow Ford fans, I just pulled the 351w (not original obviously) out of my 64 F100 to fix a broken bolt and swap the FMX automatic out for a M5OD-R2. I am really looking forward to having a manual again but I was hoping to get some suggestions.

First, upon inspection of the motor I found that the rubber around the harmonic balancer (dampener) was very cracked. The motor is from a 78 T-bird and I am rather certain that it is the original so it makes sense it would be worn out. The stock replacement for it range from the $60-$100 range, but there are some aftermarket ones that go from $90-$150. Whenever I replace something on the truck I shoot for OEM+, it isn't a show truck, nor is it high HP. Just an old farm truck that I want to keep on the road as long as possible. Does anyone have dampener recommendations? One of the things I liked about some of the aftermarket ones is the improved timing mark visibility.

Second, the M5OD-R2 that I purchased used is in great shape, the internals look lightly used with no issues. I am just going to upgrade the rear shifter rail seals, rebuild the shifter bushing (?), and replace the front and rear seals since they are easy to get to. The big issue is the flywheel and clutch that came with it. The clutch components look usable, but I know the flywheel is from a mid-90's 302 so it will not work on the 351w due to the balance weight difference. Again, I would like to go OEM+, but their is a myriad of flywheels out there. The ones that are called OEM replacement look like they would work fine, but I would like to hear suggestions on possible upgrades.

Second and half, the clutch itself is from a mid-90's F-150. I think it would meet my needs fine, but I have never mated a used clutch to a new flywheel. Is a new clutch and pressure plate recommended? I know new is always better, but I am looking to save some money if at all possible.

To add context, this truck will be used to haul things, but nothing too heavy. I also do not plan on pulling a trailer regularly with it. Actually, I do not see ever pulling with it as it does not have a hitch, nor do I have a trailer.

I really appreciate any input, Thanks.

 

i think the 78 bird motor was internally balanced so finding a flywheel wont be as hard as other combinations, what did the F-150 have for a motor? you might be able to rob the flywheel off of it as well as the clutch. , go ahead and get a stock damper from the parts store and just make the timing marks more visible with white paint, womens fingernail paint comes with a little brush, go thru your wife's purse and while your at it get yourself a little beer money too.

 

The balance factor never changes for the 351W it is always 28oz so keep this in mind when you're looking for parts. A flywheel and damper from a 5.0 will fit on the engine but the balance will not be correct. There are 2 different timing pointer locations that were used on the 351W, a 10:00 and an 11:00 position.