Ford y block flywheel info.

B

bakchoy

Junior Member
I have a 292 Y block that I am going to put a T5 behind. It is going in a car and the flywheel I have is out of a 1960 f250. Is it heavier than a car flywheel or do I need to find a car flywheel? I can't find flywheel info anywhere. Any info would be greatly appreciated. Thanks.
 
If you have time and can afford it, take the flywheel in to have it cut down a bit. Tell the machinist to go ahead and take a bit off, more then may be required. A lighter flywheel is a good thing, to a point. To protect his butt, a good machinist will not take to much off.
 
Thanks for the info. I really appreciate it. It needs to be resurfaced anyway so I'll have it lightened a little also.
 
Last edited:
scrapiron said:
Check the clutch bolt pattern, from a 250 it may be larger than you want for a car,,,,
Click to expand...

Scrapiron has the right idea, in this case the old maxim "If some is good, more is better, and too much is just enough." might not apply. If the flywheel is drilled for a 12" clutch and you are looking for performance the added centrifugal mass will hurt the engines ability to rev quickly and slow up those speed shifts if that is your plan for the car. A smaller diameter clutch will act just like a lightened flywheel; even a 10" pressure plate and disc of good quality can outperform a stock 12" assembly. It all depends on what you are looking for.
 
A rule of thumb regarding flywheel weight is 1 lb. per 100 lbs. of vehicle weight. A while back
I was considering a lightened flywheel for my truck. With the truck at 2700 lbs., that gives 27 lbs. I didnt end up doing that, but the clutch in use is a 10 inch.
 
Thanks again to everyone that took the time to respond. I was not able to find any of this info anywhere else.
 
10", 10.5", 11", & 12" clutches.

Here is a pict of the pressure plate and clutch sizes from a 57 ford truck manual. For anyone interested.

123279
 

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