I have the 4R70W auto in my 98 F-150. I am looking for a good shift kit for my truck. But I don't want something that I have to tear my transmision down to install.

 

Sniper,
I would strongly suggest a Superchip.NO transmission tear down needed.Talk to Mike T. over in the computerchips section.

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*WE WANT TO RACE THE TRUCK....PEOPLE LOVE THE TRUCK*

99 F 150 4x4.ORP,S/B 4.6 4.10 gears, Gibson 3" cat back. K&N filter. Superchip

Other Toy: 1964 Falcon, 300 H.P. 306,(soon to be 347)TopLoader 4 spd. 9"Detriot Locker rear end with 3.91's

 

Computer modifications and electronic controllers aside, all the "shift kits" will require a valve body removal.

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2000 F-150 XL, RC, LB, 5.4L, 4R70W, 3.55LS,
Class III tow, Payload #3, & Convenience pkgs.,
4-wheel disc/ABS, Chestnut/Parchment 40/60,
Ford bedliner w/Paintsaver & gas/wheel/spare locks,
K&N F.I.P.K. w/Outwears pre-filter, Superchip,
Dynomax ultra-flow welded 3" cat-back w/ 3" Y-pipe,
Hellwig front & rear anti-sway bars, Rancho RS 9000s,
Mobil 1, K&N oil filter.

 

A thing to consider with any pure software shift kit. If the software is telling the transmission to maintain a higher line pressure and the lube circuit is starved for oil, the software still demands line pressure to the shift and...well, you see where this is going. Using a completely mechanical shift kit (valves and springs)does not modify the lube priority and the transmission will shift slower rather than starve the lube circuit. Slow shifting is a lot better than no lube, so you can take it apart and finds the problem before your transmission eats itself. Sort of a built in limp mode.

G

 

I think it's only fair that I mention that my above is a generality, and doesn't apply to any paticular shift kit, chip or transmission, and I personally do not and never have worked on the 4R70W, or with any chip. I'm sure that some chips have anticipated the problems I mentioned and I'm not sure that the problem would exist on a 4R70, but I'm not sure it doesn't apply to that transmission, and I don't know that any (or any specific one) chips have a provision to avoid it.

G

 

Hey factory tech! Does a 2001 X with a tow package have a different computer program for the transmission shifting than a 2001 X without the tow package?

 

I just installed a TransGo shift kit. It's $106 including shipping from Summit. It came with an install video. You have to remove the valve body and replace all the springs and valves. I had never done one before. It was real easy! Two hours from drive into the garage and drive out. The shifts are firm but not harsh until about a third trottle. From third throttle up the shifts get real crisp. I liked it so much I bought a second kit for my T-bird.

 

I'm not the person to ask about programs, except for test stand profiles I don't deal with them. Sorry, you may ask someone who works in an assembly plant.

G