4R100 Rebuild kit?

99Stroke · Jan 10, 2013

Hi I was wondering if anyone could tell me who makes a good rebuild kit for a 4r100. I would just send it out to BTS or Twisted Diesel but I need to replace my injectors so my funds full enough to have it sent out so Im doing it myself with the help of a friend whos a Ford Tech. Im planing on building the truck to have around 500 marker sometime in the future so Id like to get a kit that would work for that set up so I dont have to tear it apart in the future and buy another kit as well. Thanks!

Groomzybanshee · Jan 10, 2013

A lot more to than just a rebuild kit for 500 hp

99Stroke · Jan 10, 2013

What would need to be done then?

POWER-STRUCK · Jan 11, 2013

i'm sure that atleast one of the sponsors here specializes in trans work
if nothing else i can get you a alto red eagle power pack kit, transgo tugger and a triple disc converter. just send me a PM if interested

4.0l sahara · Jan 12, 2013

How much do you want to spend? A good triple disk converter will be 1000+ just by it's self. Could get you a price on all the stuff you would need for a rebuild/upgrades if you would like. To do it right I would get a converter, sonnax shift kit, billet input, billet forward drum or e4od drum may hold up but is a gamble at 500hp, e4od low/reverse drum and the sprag etc needed to swap it in, seal kit and clutches.

early99powerstroke · Jan 12, 2013

If I were you do I'd use the ford oem spec borgwarner clutches (bts and john wood use) and go as tight on clearances as the ford specs call for, machine down the center support on both sides and use the sonnax snap ring on top and bottom to prevent walking, bts valve body, e4od forward drum thread the hole for the plug and install a set screw, triple disc torque converter preferably a precision industries, sonnax bushing, sonnax locking snap ring for the overdrive piston, and you could just get the stock shafts cryogenically frozen. The secret to a solid transmission isn't a bunch of clutches but a quik apply and release time on the clutch packs (doesn't give the clutches a chance to slip and build heat)