manual flywheel difference
#1
manual flywheel difference
i was wondering what you can tell me about these flywheels. the first one is like all the ones i seen before. the second one has less holes and the center recessed area is smaller. the first one is 5 7/8 the other is 5 1/8. they both fit 350/455.
100_4988-1.jpg?t=1321216039
100_4989-1.jpg?t=1321216097
100_4988-1.jpg?t=1321216039
100_4989-1.jpg?t=1321216097
#4
OK, here's my guess on the extra holes drilled through the flywheel. The bottom one has only the two sets of clutch pressure plate holes, for the 10" or 11" clutch. The top one has the same plus extra holes to be used in balancing the flywheel. The reason I say that is I have a flywheel in the garage with pins in two of the extra holes. I've also got one flywheel with 1/2 the amount of extra holes as your top picture. I don't know if this is an early or late production thing, or maybe the manufacturing plant they were purchased from. No idea on the center diameter difference. John
#5
OK, here's my guess on the extra holes drilled through the flywheel. The bottom one has only the two sets of clutch pressure plate holes, for the 10" or 11" clutch. The top one has the same plus extra holes to be used in balancing the flywheel. The reason I say that is I have a flywheel in the garage with pins in two of the extra holes. I've also got one flywheel with 1/2 the amount of extra holes as your top picture. I don't know if this is an early or late production thing, or maybe the manufacturing plant they were purchased from. No idea on the center diameter difference. John
Of course, if I'm wrong...
#7
I have also seen "balancing" pins. But shouldn't that be a 10.5" and 11" clutch? I am NOT offering this correction in any other spirit other than to make sure correct info. is provided (and I suspect you for one won't take it any other way).
Of course, if I'm wrong...
Of course, if I'm wrong...
Joe, I don't think any other GM flywheel will fit on the Olds cranks. But I'm not an expert on this topic. It will be interesting to see what other ideas are posted to the thread. John
#9
here are a couple pics of the back and some numbers i found on the clean one.
100_5030.jpg?t=1321316372
100_5031-1.jpg?t=1321316408
100_5034.jpg?t=1321316442
100_5041.jpg?t=1321316474
100_5030.jpg?t=1321316372
100_5031-1.jpg?t=1321316408
100_5034.jpg?t=1321316442
100_5041.jpg?t=1321316474
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