3rd gen Engine/Drivetrain Engine/Drivetrain Modification Discussions for 1999-2003 Models Only (BJ chassis)

Auto Transmission mods

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Old Apr 16, 2005 | 08:44 PM
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Auto Transmission mods

Are there any mods for the auto transmission itself on the 3rd gen, like a shift kit or stall converter or something??????????
Old Apr 16, 2005 | 09:04 PM
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http://www.lentechautomatics.com/4f27eproducts.html
Old Apr 16, 2005 | 09:19 PM
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those are for focuses not proteges unless there is something im unaware of.
Old Apr 16, 2005 | 11:12 PM
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both trannies are identical
Old Apr 17, 2005 | 12:21 AM
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they are VERY similar but not identical. There is a huge thread discussin the differences between the focus tranny and the protege tranny. I think MacDaddy knows a good bit about them.

Here's the rules though....

use good fluid (synthetic with a high tolerance for heat...i.e. redline)

keep up line pressure (valve body)

run a small tranny cooler to lower temps.
Old Apr 17, 2005 | 04:50 PM
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so theres no shift kits or anything?
Old Apr 17, 2005 | 05:47 PM
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what do u mean by "shift kit"
Old Apr 17, 2005 | 05:51 PM
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a thingy you put in the thingy to make it shift better
Old Apr 17, 2005 | 07:41 PM
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those would be valve bodies and lentech sells them for around 350$
Old Apr 17, 2005 | 08:07 PM
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yeah but im not 100% sure if they fir our cars or not id have to ask macdaddy he knows alot about this sort of thing
Old Apr 17, 2005 | 08:12 PM
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I asked macdaddy he didnt know much at all. The site lists the products are for the

4F27E/FN4A-EL
Focus/Protege

So if for some reason it didnt fit (even though im sure it will) you could return it.
Old Apr 17, 2005 | 08:20 PM
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Ok, thanks a ton, their site says extremely similar to proteges so there must be some slight difference

Last edited by import_tuner19; Apr 17, 2005 at 08:23 PM.
Old Apr 17, 2005 | 10:29 PM
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Have any of yall used the Trick Shift synthetic that B&M sells? I have heard it is good but not sure.
Old Apr 18, 2005 | 08:41 AM
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i use redlne D4 ATF and it works great
Old Apr 19, 2005 | 06:33 AM
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A 'shift kit' BACK IN THE DAY consisted of a few ball bearings and a new gasket for the valve body to change when/how hard the tranny shifted.

They work. My 72 Impala w/ 350 and the turbo-hydro350 could 'catch second' (albeit a small bark! ) after the kit. I was well pleased as a pimply BIg Country Pimp in my jacked-up (with coil sping spacers) primer-black 8-track playing 'Boston' with a 'booster/EQ' putting out 10%THD... sigh.

Is ti worth it for our cars? Prob'ly not. Spend the dough on engine mods. (My $.02 worth...)



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