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How to ID a Twin Grip |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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VERY true.
All one has to do is think of the size - diameter of the pinion, and the thickness of the ring gear to reach the pinion. Being on the 20 the 2.87 and higher numbers (lower ratios) were most common, makes sense to make them pretty much interchangable, IMO. But I only play an engineer on my home computer............
with the 2.87 being standard for the auto/V8 combo, but a lot of folks wanting an optional ratio, it makes sense to make them interchange. My car is a good example. It's originally a C differential, twin grip. But the invoice bills the customer for an optional ratio (which it turns out is 3.15) and a whopping 10 bucks cost. They only had to drop the different gears into those who wanted the optional ratio. Edited by billd - Dec/19/2010 at 10:48pm |
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mchaggis
AMC Apprentice Joined: Aug/29/2010 Location: New Zealand Status: Offline Points: 239 |
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That's settled then! 2 carriers.
Thanks for your help. I'll have to move the car for a good look at the cover but if I can't see the letter then it shouldn't matter all that much.
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jroemer
AMC Apprentice Joined: Oct/28/2007 Location: Athens Ohio Status: Offline Points: 240 |
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Okay I did this and the wheel turns. What does that mean ??
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1972 Hornet X two door sedan
1973 Gremlin X V8 conversion 1972 Gremlin X factory V8 car 1972 Hornet SST 2 door sedan AMO# 9855 |
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poormansMACHINE
AMC Addicted Charter Member Joined: Jun/28/2007 Location: Shoemaker-Levy9 Status: Offline Points: 12302 |
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Same direction or opposite? |
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jroemer
AMC Apprentice Joined: Oct/28/2007 Location: Athens Ohio Status: Offline Points: 240 |
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If I raise both wheels and turn one. The other wheel turns the opposite way.
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1972 Hornet X two door sedan
1973 Gremlin X V8 conversion 1972 Gremlin X factory V8 car 1972 Hornet SST 2 door sedan AMO# 9855 |
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poormansMACHINE
AMC Addicted Charter Member Joined: Jun/28/2007 Location: Shoemaker-Levy9 Status: Offline Points: 12302 |
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Run of the mill open diff.
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kingsX
AMC Nut Joined: Jan/20/2011 Location: Holland, MI Status: Offline Points: 343 |
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Whats it mean if both wheels turn the same direction?
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73 AMX Javelin PC
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poormansMACHINE
AMC Addicted Charter Member Joined: Jun/28/2007 Location: Shoemaker-Levy9 Status: Offline Points: 12302 |
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It could mean that you have one of the locking type differentials. Worst case it means that the pinion shaft is worn and the spider gears are wedged in position.
Pull the cover and dispel all doubt.. |
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phast1
AMC Addicted Joined: Feb/07/2008 Location: California Status: Offline Points: 716 |
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My 68 actually has a factory "11/39" stamp which means means it's a factory 3.54 ratio. Kinda cool i think because it was optioned up from the standard 3.15
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1972 Javelin
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poormansMACHINE
AMC Addicted Charter Member Joined: Jun/28/2007 Location: Shoemaker-Levy9 Status: Offline Points: 12302 |
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Or it was swapped in.
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