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Old 02-05-2008, 11:12 AM
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Tranny upgrades

So it is time for me to start upgrading the tranny in my truck. I have the 4r100 auto. I have been looking at everything from the shift kit things that are just the new valves and springs clear up to the complete upgrade rebuilds from places like suncoast. I am not going to make huge power ever with this truck, probably 350-400 whp is the most i will ever get to. What should i go with, do the 90 "shift kits" do much? Should i get the whole new valve body assembly? As far at the stock torque converter goes, at what power levels do i need to start thinking about a new one? Any help that you could give me would be great.
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Old 02-05-2008, 11:24 AM
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I would get the John Wood VB and be done with it. As far as your converter goes I think they are all different. I know my tranny as a whole is not strong. Very evident after the DP tuner. Just need to save up some money for a built one by John, then one doesnt have to second guess all the time if their trans is gonna poop on them! I have read the stock tranny is supposed to be good to about 350-400hp, dont know if there is any truth to it though, just what ive read. Hope this may help
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Old 02-05-2008, 11:29 AM
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mine went out with about 300
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Old 02-05-2008, 11:30 AM
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yea, thats about where im at, i dot thik its happy, i stay in the 80 econo mode
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Old 02-05-2008, 11:30 AM
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Yeah i have no idea what i am making right now but i can tell with the tune and the chip up it is not happy when i get in it. I get slippage and shuttering.
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Old 02-16-2008, 05:26 PM
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Yea mine wnt out and im in the 350-400 rwhp range it went in less than a month at those levels. $4300 later and i have a awsome tranny- tourque converter. Theirs also a huge powerdiference with a performance tranny to
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