can anybody tell me how many teeth are on the ring gear from a y-block ford with an 11" clutch? also, does anybody know how these engines are balanced? internally or externally? 28oz? etc... thanks for any info.
Do you know for sure if there are different tooth counts? I kind of thought they were all the same. I'm not sure though. I have one out of a 1960 Pickup OD in the garage. I just counted 146 teeth on it. Not sure which clutch it HAD, this one didn't have it with it.
The way I read ford parts book, 146 tooth ring gear with a 12 3/8 diam. bolt circle. It does list another,but doesn't state number of teeth. It says 54-59 st/od with 11 3/8 diam. bolt circle.
There are 4 Y Block flywheels that Im aware of. The standard car and truck 10 and 11" clutch are the most common and both use a 146 tooth ring. These were used 54-64. Ive heard tales of some compatibility with 312 TBirds but havent had 1st hand experience. Then there is a 11" that came out in 58-64 for trucks that wont swap with others due to a different (called positive action) starter. Dont know tooth count. Then there is another for 11 1/2 and 12" used in larger trucks 61-64 only. The 239/256 was internally balanced, the 272 and up was external. The balancers have a bad habit of the rubber loosening up and causing slipping. Things you learn by working on them and not reading books.
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