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Hey guys, I have a 4r100 and I am looking to upgrade it some. Well here, Ill just pose my base question. I am getting a free rebuild under warranty from my builder. He will completely rebuild it replacing all the broken or worn parts with new stock ones for free. I want to upgrade some of these parts however and have about $1500 to do so (this includes the TC). So I want to find the best combination of parts and a TC for my application that will be under that $1500. I use my truck for a daily driver, and I want it to last. But i also want to take it to the track a couple times to see what she can do. I want a transmission that will hold up to 400-500 hp for many miles.

Wow that sounded really demanding haha. Iv made a parts list with a bunch of stuff. I know alot of the options overlap and what not but here is a list with prices and links to each part. Hopefully you guys (who are awesome btw) can help me decide what I do and dont need.

Input Shaft-$150-300
Ford 4R100 Transmission Input Shaft Billet 300M Hardened Steel | eBay
or
John Wood Automotive - Products

Intermediate Shaft- $50
John Wood Automotive - Products

Valve Body-$250
John Wood Automotive - Products
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BTS valve Body
or
https://racerxusa.com/product_info.php?products_id=272&osCsid=08f52121c367a2beb9919f87f994d3b3

Spiral Snap Ring- $15
E4OD 4R100 Overdrive Spiral Snap Ring Sonnax 36744 01 | eBay

ZPAK- $120
E4OD 4R100 Zpak Intermediate Raybestos Z Pak 1989 On | eBay

Direct Powerpack-$100
E4OD C6 4R100 Alto Red Eagle Direct Powerpack 1966 On | eBay

Intermediate Powerpack
E4OD 4R100 Alto Red Eagle Intermediate Powerpack 89 On | eBay

Coast Clutch Powerpack that works with Cast Iron Coast Drum
E4OD 4R100 Alto Red Eagle Coast Powerpack 89 99 | eBay

Torque Converter $600-1000
4R100 Stage 4 Torque Converter
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https://racerxusa.com/product_info.php?cPath=82&products_id=268&osCsid=08f52121c367a2beb9919f87f994d3b3
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Stallion Torque Converters | Precision Industries
link>>> http://www.converter.com/images/stallion/powerstroke.pdf
4R100 Precision Industries "Stallion" 3-Clutch Power Stroke Torque Converter :: FORD Stallion Torque Converters :: Pro-Built Automatics

Cast Iron Coast Drum w/ new planetary- $350 __From builder or….
Sun Coast Diesel Transmissions*-*Ford 4R100 4

Disc Coast Clutch Drum | Catalog Products | Sun Coast Diesel Transmissions


Coast Clutch Powerpack that works with Cast Iron Coast Drum
E4OD 4R100 Alto Red Eagle Coast Powerpack 89 99 | eBay

Overdrive Powerpack- $75
E4OD 4R100 Alto Red Eagle Overdrive Powerpack 1989 97 | eBay

Front Hub to Forward Drum Washer-$5
C6 E4OD 4R100 Metal Front Hub to Forward Drum Washer | eBay

Possible complete kit, but need to see if he can make the kit for the Cast Iron Coast Drum Style- $500
4R100 Alto Red Eagle Kolene Friction Steel Kit 98 on with Powerpacks Heavy Duty | eBay
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Sun Coast Diesel Transmissions*-*Ford 4R100 Xtreme Rebuild Kit 1999-2003 | Catalog Products | Sun Coast Diesel Transmissions

Do I want this? Bushing kit- $65
4R100 Ford Bushing Kit w Teflon Tail Bushing 1998 On | eBay

Do I want this? Overdrive Sprag Assembly- $100
E4OD Updated 2nd Design Overdrive Sprag Assembly 89 On | eBay

Do I want this? Boost Valve and Sleeve Kit-$40
E4OD 4R100 New Boost Valve Sleeve Kit by Sonnax | eBay

Steel OD Planet Kit-$100
E4OD 4R100 Ford Lincoln Steel OD Planet Kit | eBay

Center Support Kit-$90
E4OD 4R100 New Updated Bearing Type Center Support Kit | eBay

Servo Piston-$13
E4OD 4R100 Updated National Band Servo Piston New | eBay

Solenoid Pack-$240
Ford 4R100 98 2005 Solenoid Pack E4OD Transmission Electronics Powerstroke Only | eBay

Dual Load Center Support-$230
Sun Coast Diesel Transmissions*-*Ford 4R100 Dual Load Center Support 1989-1997 | Catalog Products | Sun Coast Diesel Transmissions

Line Mod Valve-$32
Sun Coast Diesel Transmissions*-*Ford 4R100 .500 Line Mod Valve 1989-2003 | Catalog Products | Sun Coast Diesel Transmissions


Thanks so much for any help/suggestions.
 

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I'm subscribing because my plan is to do a rebuild in the future by I also have a question. Not to derail the thread but when I shift into drive, the selector seems pretty weak. Almost like the shifter is worn out. I'm at 95k in an 02. Does this sound like a cable problem or is this a neutral safety switch/trans shift mechanism problem. I fix my dads old gasser with the same problem by replacing the switch. Shoot me some ideas and I'm looking forward to the input on the trans build.


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Nice homework. Subscribed.
 

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Lay under your steering column, and look at the bottom of the shift rail. There are 2 torx screws holding a bracket on. Check to see if they are tight. Mine came loose last year, sounds like a similar problem.



I'm subscribing because my plan is to do a rebuild in the future by I also have a question. Not to derail the thread but when I shift into drive, the selector seems pretty weak. Almost like the shifter is worn out. I'm at 95k in an 02. Does this sound like a cable problem or is this a neutral safety switch/trans shift mechanism problem. I fix my dads old gasser with the same problem by replacing the switch. Shoot me some ideas and I'm looking forward to the input on the trans build.


Sent from AutoGuide.com App
 

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