True, but the low setting hypoid ratio that causes a 9 to eat more power than a dana, also results in longer, stronger teeth on the ring and pinion, contributing to overall strength. I think that if the 9 actually ate a lot more power than a dana, there wouldnt be ten nine inchers under racecars for every dana.A Dana 60 does require LESS hp to turn.
That might matter to a NHRA class racer, doesn't matter to me. HP is easy to make.A Dana 60 does require LESS hp to turn.
What boxes did the 9" check that the S60 didn't?The 9 inch will replace the S60 that is currently under the Duster. I got a new S60 with 3.23 gears from Doctor Diff last summer for the Coronet.
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Simple. Gear ratio available in a nine not available in a dana 60, as previously stated by Andy.What boxes did the 9" check that the S60 didn't?
The reason I ask is that will probably upgrade my 8-3/4 in the future, and what you are taking out is what I would have gone with.
Ok so the ratio. Didn't know what was available for what.Simple. Gear ratio available in a nine not available in a dana 60, as previously stated by Andy.
Roughly twice as many ratio choices available in a nine, compared to a dana. And some of the available choices for a dana are ludicrously low. A 6.17? How about a 7.17?! Until a little while ago, you couldnt get anything higher than a 3.54 for a dana either.Ok so the ratio. Didn't know what was available for what.
My 9 inch uses the big Set 20 tapered roller bearings. They are a sealed bearing so you don't need an adjuster but they are a tapered Timken roller bearing rather than a ball bearing. https://www.strangeengineering.net/product/3-150-1-562-tapered-axle-bearing-with-seal-ea.html/That’s because every heat manufacturer put tons of r&d into the 9. Had that been done on the 8 3/4, there would be **** loads of gears too choose from. And just a tad bit more info, those 9’s use a Green style bearing, so there goes the theory that Timkens are the best.
Roughly twice as many ratio choices available in a nine, compared to a dana. And some of the available choices for a dana are ludicrously low. A 6.17? How about a 7.17?! Until a little while ago, you couldnt get anything higher than a 3.54 for a dana either.
Yep, and a 4.10 is lower than a 3.54. Until Dr Diff had 3.23s made for dana 60, a 3.54 was as high as you could get. Thats why there is such a thing as a dana 61. Higher gears than you could get in a 60. Looks the same as a 60, but the pinion is in a different location in the case. Most common ratio in a 61 is 3.07.Uh, you could get 4.10 in a Dana 60 back in the day.
Sounds good Andyf.