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Old 12-04-2006, 05:29 PM   #1 (permalink)
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shifting problems with my turbo 350 3 speed

my trany doesnt seem like its shifting in to 3rd gear it feels like it shifts twice but i only get 40 mph out of it and it winds out and doesnt shift, please help,
thanx, jason
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Old 12-05-2006, 01:53 PM   #2 (permalink)
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well i figured that it does shift 2 times, i guess its just really low geared whitch is kinda odd, it came out of a 78 chevy 3/4 ton 4x4 long bed, but i have all the running gear of that truck so the only diference is the body and 4.3L
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Old 12-05-2006, 04:06 PM   #3 (permalink)
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check the vac switch (I forget the proper name) on the rear of the tranny. Make sure the hose has vac from the engine and test the switch to make sure it holds vacuum.
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Old 12-05-2006, 05:53 PM   #4 (permalink)
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the only thing I see is the vacume mogulater, is there any adjustments any where
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Old 12-05-2006, 09:37 PM   #5 (permalink)
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Quote:
Originally Posted by 3/4 ton s-10
the only thing I see is the vacume mogulater, is there any adjustments any where
Is it getting vacuum?

Does it hold vacuum when you test it?

You can adjust most of them by turning a screw in the vacuum inlet.
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Old 12-08-2006, 09:24 AM   #6 (permalink)
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well I figured out the trany, it was in 4 wheel drive I guess,but the front drive line wasnt spining when the transfercase shifter was all the way forword, I found that 2 high is one position from all the way back and all the way back is eather 4 high or 4 low i dont know, but then why wasnt the front drive line moving if it was in some 4 wheel drive or what ever it is all the way forward.
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Old 12-08-2006, 09:26 AM   #7 (permalink)
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I think its a 208 or 205 transfer case all i know is that its huge.
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Old 12-08-2006, 09:28 AM   #8 (permalink)
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It's probably a 203 if its out of the 78.
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Old 12-08-2006, 11:09 AM   #9 (permalink)
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what position is all the way forward, and if its 4 hi or lo then how come the driveshaft wasnt moving
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