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Old 02-18-2011, 05:55 PM
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350 turbo trans

I have a 350 turbo trans in a 1979 camaro that was wrecked and has been sitting for approx 15 years.The trans was rebuilt 6 months before wreck.I am wondering if the trans would possibly be OK to put in something else after sitting so long.I don't want to have to have trans gone through if it may be OK.I know I'm taking a chance if I just put it in.Any suggestion's would be appreciated.
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Old 02-18-2011, 05:58 PM
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As long as the fluid is pink and healthy, I would say its likely ok. It would likely be in your best interest to change the front and rear seals while its out though.
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Old 02-18-2011, 06:05 PM
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I would run it. I would look at the torque converter hub where the convertergoes into the front seal.Chances are it is a little rusty and will eat up the front seal if the when end play of the engine pushes it further into the trans. Pull the converter and check, polish as necessary. If it is heavily rusted hit it with some 180 the 320 then 400 or higher. If it isnt too bad just hit it with 320-400. The seal should be OK.If the trans sat out of the car then replace the front seal as the converter will have been "hanging" on the pump shaft and may have deformed a little over the years from the converter laying off center in the seal.
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Old 02-18-2011, 06:07 PM
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350 turbo

thanks,that makes sense to go ahead and change front and rear seal.
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Old 02-18-2011, 06:12 PM
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trans

the trans is still in the car,hasn't been removed yet.I hope it will fit my 1985 silverado 305 eng.
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Old 02-18-2011, 06:15 PM
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Check the tail shaft lenghts to make sure they are the same. some f bodys used a long shaft t 350 ( I know counterintuitive) and trucks use the short one,usually with a 2 piece drive shaft.
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Old 02-18-2011, 06:23 PM
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trans

can the tail shaft be easily swapped over if the length is not the same,are what are option's?
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Old 02-18-2011, 06:25 PM
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It can be, but not easily. The trans will have to be disassembled.Measure them first. You may luck out.
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Old 02-18-2011, 06:32 PM
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trans

thanks,I will definitly measure first
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Old 02-18-2011, 10:41 PM
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If it wasn't mentioned above, change the Fluid in Pan & drain as much as possible out of the Converter. It's probably absorbed plenty of moisture over the years. May as well change the Filter while you're there.
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Old 02-19-2011, 06:48 AM
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350 turbo

I do appreciate all the input. thanks
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Old 02-19-2011, 11:14 AM
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The Silverado probably has a 9 inch long output shaft/extension housing, whereas the one in the Camaro most likely has a 6 inch output shaft/extension housing. They can be swapped to fit, but that's a lot of work, as almost all the guts have to be removed before the output can come out/go back in.
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Old 02-19-2011, 11:50 AM
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Condensation can build inside the trans and rust stuff , also delaminate the friction material from the backing plate
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Old 02-20-2011, 07:25 AM
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350 turbo

Sounds like I may have a problem with the tail shaft length if I try to swap trans,I still haven't been able to ck yet. The reason I was going to swap trans is the trans in my silverado does not want to fall back into first when you come to a stop.If you stomp down on it when you take off it will go into firsr.Also takes along time to upshift .I have changed trans fluid and screen and modulator but still no difference.This has been going on for several years,but I don't drive the truck very often . IT has around 230,000 miles on it.
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Old 02-20-2011, 02:29 PM
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350 turbo

any ideas on why my trans don't shift properly as in previous post,are is it just time to replace trans?
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