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Auto gearboxes........

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Old Feb 16, 2006 | 05:10 PM
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hensen1954's Avatar
hensen1954
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Default Auto gearboxes........

Anyone know for sure - or take an educated guess at which was / is the strongest auto box produced by a manufactures in bog standard trim ?

My guess would be a C6 or maybe something that was behind a hemi of the day.

Am I right ....?
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Old Feb 16, 2006 | 05:44 PM
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My experience with dodge transmissions is that they're all total crap. Friend of mine has a dodge and I've yet to see her actually be able to drive it, since the transmission is ALWAYS broken.

Strongest autos? Powerglide, th400, and th350 in my opinion.
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Old Feb 16, 2006 | 08:08 PM
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The 400, C6, and TF727 are about the same for torque capacity. But for durability, it would be the C6, 400 and a distant last would be the 727. The 727 had a failure-prone planetary set and sprag. Even though it was behind the mighty Hemi, a person who used the car hard could expect regular failures of these two items. It also had a tendency to bend the input shaft.
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Old Feb 16, 2006 | 08:10 PM
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You didn't mention the powerglide, whys that? Not enough gears to consider it a real auto gearbox?
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Old Feb 16, 2006 | 08:52 PM
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Chevy Turbo 400 and 4L80E 4 speed , Ford C6 ,and hmmmmmmm but as mentioned not really lol 727
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Old Feb 17, 2006 | 03:09 AM
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The only C6 problem I ever suffered ( and its common ) is the end snapping off the second brake band. Cheap to fix but the trans has to come out and spend a few minutes on your kitchen table.
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Old Feb 17, 2006 | 10:06 AM
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Default slip and slide with powerglide

Does anyone remember that saying? Powerglides are pretty good units for 1/4 mile work if you have the right converter and get it rebuilt by someone who knows transmissions,,, 1/4 mile transmissions. The fact that you only have to shift it once is a +, but not as much fun if you are good with a four speed manual, nothing beats the sound of a high revving small block (w/open headers) going down the 1/4 mile being shifted by someone who can shift. Ah,,,,,,,,,Memories.
Peace, Moosie
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