4r70w shift kit
06-27-2014, 04:11 PM
#31
Senior Member
You. An do all of it yourself with a few OEM parts and some drill bits. Change out spring for the 1-2 and 2-3 accumulator pistons and drill out some of the holes in the separator plate. No need to touch the valve body. Now, why is transgo bad juju? It requires the use of a an external pressure relief valve installed on the valve body. This raises line pressure across the operating spectrum, rather than at e point of shift, which is what we want. Also, tuning... Done properly can and will compliment it. But, a competent tuner will only raise pressure at the point of shift and ramp up the pressure proportional to RPM. Breaking he tires loose when you pull out of the drive thru will be enjoyable until you spill your coffee on yourself.
http://tccoa.com/articles/tranny/shiftybusiness.html
Now, who is the jerry guy that is mentioned in the link? He kinda/sorta invented the 4R70W and wrote the TSB requiring Mercon 5. Also, he started a really small company located in Longwood, Fl called SCT, you might have heard of it.
http://tccoa.com/articles/tranny/shiftybusiness.html
Now, who is the jerry guy that is mentioned in the link? He kinda/sorta invented the 4R70W and wrote the TSB requiring Mercon 5. Also, he started a really small company located in Longwood, Fl called SCT, you might have heard of it.
06-27-2014, 04:20 PM
#32
none.
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This might help: http://forums.tccoa.com/search.php?searchid=3972226
06-27-2014, 05:13 PM
#33
Senior Member
06-27-2014, 05:20 PM
#35
Senior Member
From what I remember, he newer transmissions already have a few of the holes opened up. Sadly, tccoa is a shelf of its previous self. A few really big brained dudes have passed away or moved on, thus the old tech has to be searched for!
This might help: http://forums.tccoa.com/search.php?searchid=3972226
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'95flareside (06-28-2014)
06-27-2014, 09:19 PM
#37
Senior Member
The problem with 2000 and up 4R70W Valve Body doesn't have an 2-3 Accumulator Plate and Capacity Modulator Valve. Since 96-06 Valve Body are interchangeable without affecting performance. It's much better to use 96-99 Valve Body to increase it's durability and reliability.
06-30-2014, 03:00 PM
#40
