Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - th350 fairbanks kit down shift problems
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Old 07-31-2011, 09:14 AM
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Crosley Crosley is offline
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Quote:
Originally Posted by bink32
governor is used with springs to hold wide open the modulator is there but no vac to it . the instruction say to leave modulator in but not use vac to it. however it does give an option to remove it and use a plud to hold the valve.,but the instruction say not to use the plug if using the manual valve body option

Vacuum modulator is there to blow off pressure in reverse. Reverse pressure can go over 300 if a aluminum plug is installed in place of the vacuum modulaotor

Sounds like this kit is similar to TransGo. The hole in the governor circuit should fix the problem. The hole plows off some pressure to allow the down shift to first
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