390 Flywheel help Please
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Laughing Gas
Joined: Jul 2004
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390 Flywheel help Please
My flywheel in my 67 Fairlane GT 390 4speed has many heat cracks. I found a used flywheel in good shape but it is out of about a 76 Ford Truck. They both look the same side by side but the one from my Fairlane is completely flat on the front surface. The other one has a very small step in it about 2 inches from the ring gear. Anyone know if they are interchangeable? Or can I tell if they are somehow? Of course I cant find a number on either of them..
Thanks any help appreciated
Thanks any help appreciated
Last edited by Fair 96; Feb 16, 2006 at 11:39 AM.
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From: Long Island USA
If you use a stepped flywheel with your original pressure plate, the clutch may slip.
The only difference is you'll have less pressure with the stepped one. And you'll have to adjust the clutch linkage way one way. Been there, done that
You can always bring it to a machinist, get it resurfaced, and eliminate the step.
The only difference is you'll have less pressure with the stepped one. And you'll have to adjust the clutch linkage way one way. Been there, done that
You can always bring it to a machinist, get it resurfaced, and eliminate the step.
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Laughing Gas
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Yes everything looks the same except for the step. My machinest was wondering about machining the step off would this help with adjustment then.. So If we machine it flush will it interchange no problem.. Thanks alot I appreciate it.
FTE Leadership Emeritus
Joined: Jul 2002
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From: Long Island USA
Originally Posted by Fair 96
Yes everything looks the same except for the step. My machinest was wondering about machining the step off would this help with adjustment then.. So If we machine it flush will it interchange no problem.. Thanks alot I appreciate it.
If so, take your old flywheel, clutch plate and pressure plate, and bolt it together, on the bench. See what angle the fingers on the pressure plate are.
Now, assemble the new flywheel, clutch plate and pressure plate, and see if the angle is almost the same (fingers should be slightly more recessed with brand new parts because of wear).
If it's not, like the fingers are REALLY recessed compared to the original, the pressure plate is meant for the stepped flywheel.
Does this make ANY sense?
Again, been there done that
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Laughing Gas
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Originally Posted by krewat
Yup, should work fine. Are you going to put a new pressure plate on it?
If so, take your old flywheel, clutch plate and pressure plate, and bolt it together, on the bench. See what angle the fingers on the pressure plate are.
Now, assemble the new flywheel, clutch plate and pressure plate, and see if the angle is almost the same (fingers should be slightly more recessed with brand new parts because of wear).
If it's not, like the fingers are REALLY recessed compared to the original, the pressure plate is meant for the stepped flywheel.
Does this make ANY sense?
Again, been there done that
If so, take your old flywheel, clutch plate and pressure plate, and bolt it together, on the bench. See what angle the fingers on the pressure plate are.
Now, assemble the new flywheel, clutch plate and pressure plate, and see if the angle is almost the same (fingers should be slightly more recessed with brand new parts because of wear).
If it's not, like the fingers are REALLY recessed compared to the original, the pressure plate is meant for the stepped flywheel.
Does this make ANY sense?
Again, been there done that
That makes sense. We will just machine the step off.
I will be buying new everything for the clutch . I will be sure to do that. I was hoping to be able to use this flywheel to save me some money a new one isnt cheap. This one I got for free. I really appreciate all the help..
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