View Full Version : Jerry Mod for 4R70Ws
metroplex
03-19-2004, 08:10 AM
Has anyone done a write up for the Jerry mod performed on the Marauder's 4R70W?
SergntMac
03-19-2004, 09:46 AM
Has anyone done a write up for the Jerry mod performed on the Marauder's 4R70W?
What do you mean by "write up"? A how-to do it, or, a what does it do?
metroplex
03-19-2004, 09:50 AM
A write-up would be a document that explains the various procedures and specs for performing the modification.
CVN is supposed to have a write-up detailing this for a 400+ rwhp Marauder, but they're taking their sweet time in putting the article on the web. I figured if it was about a Marauder, I might as well ask here - but seeing the lack of responses probably means everyone goes to Dennis and has him perform all the modifications.
SergntMac
03-19-2004, 10:01 AM
A write-up would be a document that explains the various procedures and specs for performing the modification. CVN is supposed to have a write-up detailing this for a 400+ rwhp Marauder, but they're taking their sweet time in putting the article on the web. I figured if it was about a Marauder, I might as well ask here - but seeing the lack of responses probably means everyone goes to Dennis and has him perform all the modifications.
Here's a shortcut for the write-up, I am sure any skilled tranny builder can work with this 411.
http://www.tccoa.com/articles/tranny/transmission/page1.shtml
Dennis does make things conveinent by offering pre-built rebuilds with a core exchange program, for about what it would cost for your own tranny rebuild, unless of course, you have a friend in the business.
Logan
03-19-2004, 11:20 AM
I just did the full level 2 kit on my car... Write-up forthcoming, just waiting on a chip reprogram first...
metroplex
03-19-2004, 12:24 PM
What did you have to get changed in the chip programming?
I asked the same question because if I do the j-mod, I was worried I had to change the tranny to prevent too firm shifts, but basically I was told that you could just adjust it to your liking.
Logan
03-19-2004, 02:56 PM
Because the modifications mechanically firm up all your shift points, so you need to return the electronic line pressure modifications via the chip back to stock levels and let the line pressure operate as it's new levels which have been raised mechanically.
metroplex
03-19-2004, 03:10 PM
Just asking because I was told 2 different things: leave the tune as is, and adjust it to your liking.
I guess i could always go into the EEC and re-adjust it so that it doesn't bark the tires but shifts faster.
Logan
03-19-2004, 03:52 PM
If you don't back off the pressure on the 1-2 via the chip, the 1-2 is not just hard, but it snaps so god damn hard it'll break something at even part throttle.
We took the valve body back down, drilled it out to 1/8" and it still shifts REALLY hard, so we're backing off the line pressure electronically for 1-2 part throttle shifts back to stock.
metroplex
03-20-2004, 02:43 PM
This is what I have planned for my 00 4R70W:
Hole #1: 0.160"
Hole #2: 0.100"
Hole #3: 0.180"
Hole #4: 0.100"
Hole #5: 0.100"
Hole #6: SLOT
Hole #7: 0.125"
Hole #8: 0.238"
Hole #9: 0.089"
Hole #10: 0.089"
Hole #11: 0.089"
SLOT #1: 0.100" wide
According to my FSM, I have the good rubber bonded accumulators and I should have all the servos
Let me know what you did for your valve body.
cyclone03
03-20-2004, 07:38 PM
This is what I have planned for my 00 4R70W:
Hole #1: 0.160"
Hole #2: 0.100"
Hole #3: 0.180"
Hole #4: 0.100"
Hole #5: 0.100"
Hole #6: SLOT
Hole #7: 0.125"
Hole #8: 0.238"
Hole #9: 0.089"
Hole #10: 0.089"
Hole #11: 0.089"
SLOT #1: 0.100" wide
According to my FSM, I have the good rubber bonded accumulators and I should have all the servos
Let me know what you did for your valve body.
Before you start drilling PM me I'll send you the drill specs and a photo strait from JW.
You don't need to do that much drilling.
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