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Old 07-29-2010, 06:49 PM   #1
garyed08
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Join Date: Mar 2008
Location: Carbondale. pa
Posts: 22
TH350 Trans question

Hey everyone, i have me a little problem. i have a 1968 C10 with 1972 Suburban running gear. 350 engine, TH350 Trans, 3.07 Rear. Edelbrock 1406 carb and 2101 intake. my question about the trans is when im goin down the road and i kick it down to passing gear it goes right from 3rd to 1st gear and then shifts right back into 3rd again. could it be the vacuum modulator, or is my trans about to retire. any help would be very much appreciated
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