4r100 upgrade

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Aug 26, 2007 | 07:48 PM

c00nhunterjoe

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From: Belair md

4r100 upgrade

alot of people have been asking "why do i need the 4r100 foreward planetary?"
well whle looking for fluid today i came across my old one

Aug 26, 2007 | 08:01 PM

97REDPSD

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Joined: Apr 2007

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From: texas

Thats why I replace mine to. I also did dual bushing center support.

Aug 28, 2007 | 01:38 PM

Neal 97 250

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Joined: Mar 2007

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From: Johnson City, TN.

Makes a good paperweight though.

Aug 28, 2007 | 10:32 PM

IDMooseMan

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Joined: Jul 2006

Posts: 2,756

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From: Nampa, ID

Joe,

You had the tranny shop install this upgrade? And the other stuff, too, right? Do tranny shops do this kinda stuff on a regular basis or did you take your tranny to "performance" tranny shop?

Aug 29, 2007 | 05:57 PM

c00nhunterjoe

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Joined: May 2007

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From: Belair md

i did mine myself, that borke a weeek after towing my buddy's highboy up the side of a mountain literaly

Aug 29, 2007 | 06:25 PM

powerstroked162

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Joined: Apr 2004

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From: Ellensburg, Washington

The SD planetarys are much stronger. I believe I have a forward SD pump and planetarys in my tranny now.

Cowboy Steve

Aug 29, 2007 | 10:43 PM

c00nhunterjoe

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Joined: May 2007

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From: Belair md

the 4r100 planetary is a 6 pinion forged steel unit, the one out of an e4od is a 4 pinion aluminum unit

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Aug 29, 2007 | 11:01 PM

RocknXJ

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Joined: Jan 2004

Posts: 254

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From: Bakersfield, CA

I just did my tranny at a local tranny shop. I had an aluminum planetary that looked like the one in that picture....the splines were stripped out of it. My tranny guy said it was because the oil goes to the rear planet last, so if the fluid gets weak, low or if the pump wears, then the rear planet and clutches don't get lubed well enough. It was rebuilt with all steel six pinion planets, increased count on all the clutch packs, better valve body, shift kit, billet triple disc TQ, pump modifications, etc, etc. The internal parts to beef up the E40D are readily available and pretty much any tranny shop can and very likely has done them. Find a reputable shop, talk to the tranny guy and see how you feel about what he says, and go from there.

I have no problem with the high dollar popular brands of super stout trannies. But, for many of us that won't ever drag race or sled pull, or don't plan to build 400-500 HP motors, a well build tranny from a local shop will work perfectly for us.......for quite a bit less $$.