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**usaguedriedax** · 01-13-2012, 04:02 AM

Unfortunately the mechanical superiority of Manual trannies has not been true in the last 20 years because the automakers have figured out ways to make them fail, like case-supported needle bearings for the cluster gear. The only advantage of a manual tranny is that they usually warn you before they fail completely.
My 90 1/2 ton Suburban had a 700R4 auto and it was still working like new at 165K miles when I sold it.

I have very limited experience with sticks newer than 1990, so I guess I should have considered this. I was basing my statement on my vast experience comparing the Muncie 4 speed vs. Turbo 250/350 in the same vehicles. The 4 speed always wins. But yah, I can see how that would be a problem for them and they would need to design a manual that would break sooner.

I've had a few 4T60-Es in Bonnevilles, and they were typical 150,000 and then the planet carrier breaks. Not too impressive.

At this point, I'm leaning toward Skid's suggestion. My main problem with autos is reliability. I really like the rest of the Suburban, I was just gunshy about putting an auto back in it. If I can get a souped up tranny like that for the same price as a regular rebuild, that soulnds like the way to go.

01-13-2012, 04:02 AM	#15
usaguedriedax Join Date Oct 2005 Posts 596 Senior Member	Unfortunately the mechanical superiority of Manual trannies has not been true in the last 20 years because the automakers have figured out ways to make them fail, like case-supported needle bearings for the cluster gear. The only advantage of a manual tranny is that they usually warn you before they fail completely. My 90 1/2 ton Suburban had a 700R4 auto and it was still working like new at 165K miles when I sold it. I have very limited experience with sticks newer than 1990, so I guess I should have considered this. I was basing my statement on my vast experience comparing the Muncie 4 speed vs. Turbo 250/350 in the same vehicles. The 4 speed always wins. But yah, I can see how that would be a problem for them and they would need to design a manual that would break sooner. I've had a few 4T60-Es in Bonnevilles, and they were typical 150,000 and then the planet carrier breaks. Not too impressive. At this point, I'm leaning toward Skid's suggestion. My main problem with autos is reliability. I really like the rest of the Suburban, I was just gunshy about putting an auto back in it. If I can get a souped up tranny like that for the same price as a regular rebuild, that soulnds like the way to go.
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