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  #16 (permalink)  
Old 10-24-2012, 02:57 PM
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guess maybe i have the wrong valve in there
does anyone have a picture of the one i need for use without an elbow or "spring"

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  #17 (permalink)  
Old 10-24-2012, 03:06 PM
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been reading stuff online about "boost valve" modifications for full manual shift th400's and how you use a plug for the vac mod spot. which mine had a plug. I hope this trans is designed to shift on its own in the first place. It doesent seem like the vac mod valve is sticking out of the trans enough to make contact with the modulator
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Old 10-24-2012, 03:16 PM
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how can i tell if there has been a manual valve body installed instead of there being an issue?
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Old 10-24-2012, 06:06 PM
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okay well i bought a manual valve body th400 i guess.... It goes
Park-reverse-1-2-3. Is there anything i need to know about this? This truck is my daily driver. the 1-2 shift is really hard and fast but the 2-3 shift seems really mellow
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Old 10-24-2012, 09:52 PM
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Well i took it out today and im not really sure what happend but im pretty sure i downshifted going to fast. anyways threw a rod.
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Old 10-24-2012, 09:53 PM
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when i downshifted it caught really well and took off but then slipped and KNOCK KNOCK KNOCK KNOCK KNOCK KNOCK
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Old 10-25-2012, 07:51 PM
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Quote:
Originally Posted by 0trbo4myCHEVUICK View Post
when i downshifted it caught really well and took off but then slipped and KNOCK KNOCK KNOCK KNOCK KNOCK KNOCK
Bye Bye buick 231 v6. You served well. Hello vortec 350. serve me well.
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Old 10-26-2012, 11:47 AM
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What kind of modifications need to be done to make this trans safer to drive EVERYDAY? If i would have had a rev limiter my motor would still be together right now instead of throwing a rod from downshifting going to fast..

The thing is, my speedo ended up being WAYY off and i was only spinning 2k coming off the highway. It didnt feel like i was going very fast but i threw it into second and it revved off the chart and threw that shizz lol... I feel like an idiot, I didnt even know what kind of th400 it was and the seller was in the dark as well. I only paid 400 for it and its a new rebuild with deep pan.

I would like to keep this as my DD trans if I can but im willing to make nessessary modifications for a more streetable trans.
Everything ive read makes me paranoid. Saying you need to be into the gas pedal throughout the shifts and no cruising in second and no shifting to first under 10mph and freespinning in 2nd and 3rd and broken sprags. What if im slowing down coming up to a red light and im coasting it in 2nd but then it turns green, can i just slam on the gas and go or is that going to break a sprag or something?
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