need help 904 upshift

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mattydean

Well-Known Member
Joined
Aug 18, 2007
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Location
arizona
Just got a 74 dart 318 with a 904 trans. The car shifts from 1-2 at 25-35 mph. But the 2-3 shift does not occur till 65-70. Was told that it was the valve body. But any help would be appriciated
 
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