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Old 07-09-2014, 11:10 PM   #1
2nd Gear Member
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Join Date: Oct 2013
Vehicle: 1989 Mustang 5.0 Vert
Location: California
Posts: 185
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Just got mine in the mail. I know it wont work 100% without a manual valvebody but the stock one is broken. I want to install a manual valvebody at some point but I am hearing from a local shop that it will ruin the transmission if it's a daily driver, is that true? Also, how hard is this thing to install?
1989 5.0 LX vert auto. Rear cats removed, flow 50s replaced with straight pipes. Quieter with no drone than with the Flow 50s.
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Old 07-09-2014, 11:33 PM   #2
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Join Date: Jan 2007
Posts: 1,108

A manual valve body by itself won't hurt anything on a DD as long as you're not abusing the transmission by holding in a low gear at high RPMs all the time or shift backward to lower gears before you should. Plenty of guys are running manual VBs on the street. They're fine if you know how to drive them right. They probably just don't want to take the risk of you knowing how to do it right and are just telling you "nope".

If you can learn to drive it like the stock auto would shift, you're fine. That isn't saying ANYTHING about what kind of converter you have (lock-up, shall speed, etc). I personally wouldn't want one for a DD and would just go with a stick though. Shuffling through the gears up and down w/o actually selecting what you want directly would get old. In my driving 3-5 and 5-3 are as common as me shifting from 1-2. You can't skip a gear on a manual VB unless I'm drastically mistaken.
'91 GT 5 Speed

Last edited by Maxwelhse; 07-09-2014 at 11:40 PM.
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Old 07-09-2014, 11:33 PM
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