4R70W tranny upgrade
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Member
Joined: Apr 2001
Posts: 22
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From: New Caney, TX USA
4R70W tranny upgrade
Has anyone put a shift kit or any mods in a 4R70W Tranny?
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Bright Red 99 F150 Extended-Cab 4.2V6
Snugtop Hard Tonneau
Superchip
Bosch PlatinumPlus4 plugs w/Magnecore 8mm Competition Wires
AirForceOne FIPK
Gibson Performance Single Side-Swept Exhaust
Clear Corner Lights
Amsoil
(Thanks for all the help Mike Troyer)
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Bright Red 99 F150 Extended-Cab 4.2V6
Snugtop Hard Tonneau
Superchip
Bosch PlatinumPlus4 plugs w/Magnecore 8mm Competition Wires
AirForceOne FIPK
Gibson Performance Single Side-Swept Exhaust
Clear Corner Lights
Amsoil
(Thanks for all the help Mike Troyer)
Senior Member
Joined: May 2000
Posts: 4,761
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Member
Joined: Oct 1999
Posts: 61
Likes: 0
From: Wa. State
boxman- My tranny failed and when I had it rebuilt, I had a commercial 3rd gear clutch installed as well as upgraded accumulators. I can tell you that the truck tows like a truck should tow now. It holds the gears until you really mash the pedal, then it will shift down. There is more control put in my foot istead of the tranny making all the decisions on when it should shift. HIGHLY RECOMMENDED!!
Senior Member
Joined: Mar 2000
Posts: 1,740
Likes: 22
From: SE Florida, USA
<font face="Verdana, Arial" size="2">Originally posted by basshunter:
There is more control put in my foot istead of the tranny making all the decisions on when it should shift. </font>
There is more control put in my foot istead of the tranny making all the decisions on when it should shift. </font>
Mark
Member
Joined: Oct 1999
Posts: 61
Likes: 0
From: Wa. State
Mark,
That was what I thought until the upgrades were made and I am happy to say that it doesn't work that way anymore. It still goes into O/D at 40 mph, but when you have it loaded down, it holds the gears. So, under 'normal' driving conditions I agree that the computer has its way, but when you are loaded down, it allows the engine to stay in the powerband rather than shift unexpectantly. The proof is in the truck.
That was what I thought until the upgrades were made and I am happy to say that it doesn't work that way anymore. It still goes into O/D at 40 mph, but when you have it loaded down, it holds the gears. So, under 'normal' driving conditions I agree that the computer has its way, but when you are loaded down, it allows the engine to stay in the powerband rather than shift unexpectantly. The proof is in the truck.