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C6 Shift problems

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Old May 14, 2010 | 11:07 AM
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C6 Shift problems

I have purchased 1978 f-150 4 wheel dr. It Has a 351M w/ C6 auto tranny. This truck was used as a pulling truck (amateur) if figure from the looks. The truck runs very well however the problem lies in the transmission. When it is put into Drive it not will shift ouy..But it will shift manually from 1st to 2nd fine.. revirse is strong. I have couple of questons. first could this tranny be set up this way as not to shift out , or to be shifted manaually only , The shifts from 1st to 2nd are firm and no slipage as is the same with revirse.
 
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Old May 14, 2010 | 12:11 PM
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A full manual valve body will do this. Does the trans take off from first gear or third gear if it is placed in the drive position?
 
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Old May 14, 2010 | 07:25 PM
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it start off in first gear
 
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