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Old 02-07-2012, 06:14 PM
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Trying to ID a transmission from 1985 Chevy truck

i have a transmission out of a 85 chevy truck that has a four prong plug on the driver side of the casing what is it and is it and over drive transmission

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Old 02-07-2012, 06:22 PM
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Quote:
Originally Posted by 85sdk
i have a transmission out of a 85 chevy truck that has a four prong plug on the driver side of the casing what is it and is it and over drive transmission
yes, that should be a 700r4 and it is an overdrive trans. does the shift indicator show a "d" with a circle around it and then d-2-1? and is the pan shape rectangle?
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Old 02-07-2012, 07:46 PM
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yep 700r4 was the only overdrive offered.
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Old 02-11-2012, 02:14 PM
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85 could be TH350C or TH700R4, both have the 4-Pin plug for Lockup TC.
Look at the Pan shape >> http://www.maliburacing.com/auto_tranny_id.htm

1 Aluminum Powerglide 14 bolts
2 TH200 Metric 11 bolts
3 TH350 13 bolts
4 TH400 13 bolts
5 TH200-4R 16 bolts
6 TH700-R4, 4L60, 4L60E 16 bolts
7 4L80E 17 bolts
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Old 02-12-2012, 12:40 PM
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the pan will tell easily as per the post up above, also another way is just look if it has a modulator valve pointing backwards on rear right side then it is a 350C , no mod valve then a 700 o/d.
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