Need Help With My Modded 4r70.

Mr. Rustypwnz

Advanced Member

Jun 1, 2005

1,761

63

69

indianapolis/ valdosta ga

Oct 17, 2013

#1

• Oct 17, 2013

• #1

Ok, so I have a stock 03 4r70w in my 98gt. It has a huge trans cooler and a manual valve body. Problem is, it just dosent shift that well into 3rd gear. It will chirp the tires into 2nd, but 3rd feels like . I have taken the 3rd gear accumulator spring out and it has gotten a little more firm, but I just want it to shift a little harder like 2nd gear does (because of the nitrous!). Anyone know what im talking about?

 

flstang65

10 Year Member

Dec 6, 2007

1,484

135

94

SE Georgia

Oct 18, 2013

#2

• Oct 18, 2013

• #2

could you get a tuner and adjust the settings that way?

 

Reactions: trombonedemon

Mr. Rustypwnz

Advanced Member

Jun 1, 2005

1,761

63

69

indianapolis/ valdosta ga

Oct 18, 2013

#3

• Oct 18, 2013

• #3

nope! all electronics have been ditched. It has a vacuum modulator on it now.

 

sneaky98gt

10 Year Member

Apr 23, 2008

2,387

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NC State University

Oct 18, 2013

#4

• Oct 18, 2013

• #4

I'd go inquire on the TCCoA and SCCoA boards. There's some guys over there that know the 4R70W like the back of their hand.

 

Mr. Rustypwnz

Advanced Member

Jun 1, 2005

1,761

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69

indianapolis/ valdosta ga

Oct 19, 2013

#5

• Oct 19, 2013

• #5

yeah Ive tried to get on clickclickracing, but they wont validate my account. Ill try and find jerry on tccoa later. He engineered the damn thing lol.

 

sneaky98gt

10 Year Member

Apr 23, 2008

2,387

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NC State University

Oct 20, 2013

#6

• Oct 20, 2013

• #6

http://forums.tccoa.com/forumdisplay.php?f=955

Yea, I'm not sure if Jerry still posts there or not, but there's plenty of other guys that know that transmission pretty darn well, too. RobertP routinely builds 4R70Ws to hold 700+ horsepower.

 

95Vert383AOD

15 Year Member

Jun 10, 2008

1,133

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New Bedford, MA

Oct 20, 2013

#7

• Oct 20, 2013

• #7

Hows the Linkage? Is it fully seating in 3rd? Any loose bolts on the valve body? Does the Trans still have O/D? How is the Torque converter? Are you sure thats not slipping?

 

Mr. Rustypwnz

Advanced Member

Jun 1, 2005

1,761

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69

indianapolis/ valdosta ga

Oct 20, 2013

#8

• Oct 20, 2013

• #8

It does have OD, just not wired up yet. Im 90% sure its not slipping. It is fully seating in 3rd as well, it has a tad bit of play though. I played with it some more today and I think its just the converter messing with me. It flashes at 43-4400. It pulls hard on the top end and def. dosent feel like its slipping, but I cant verify because lock up is blocked off.