Originally Posted By: 99Burb454
Also I'd like some suggestions on rebuild kits to use on the performance end of the spectrum. Not super super performance though, the thing weighs 6000#. Lol. Think im already gonna do the transgo shift improver, really interested in upgrades to pump, solenoids, separator plate, valves, steels, etc. can't afford the billet aluminum housings but a man can wish. Lol. May not want them for that heavy sob anyway. One more question, the check ball seats in my case are worn a bit, I haven't been able to find much in the way of how to proceed with that issue other than it should be ok as long as the ball still seats completely. Well duh! Lol. Are there any retro fit kits? Thanks guys
Check Ball pocket wear on the Case side is normal & causes no harm, They seal against the Separator Plate....If the plate has wear, Replace it.
Replace all Solenoids & Pressure Switch Manifold with AC-Delco or Borg Warner replacements. Rostra makes good replacement harnesses if yours is damaged/leaking. Use a Filtran or Allomatic filter. DO NOT use vasoline or wheel bearing grease for assembly.....The filter will clog. Filtran makes dedicated assembly lubes (I like TransJel Red). Buy a assembly manual, ATSG is OK & cheap enough.
Pump Upgrades.....Check for wear in the pump gear pocket before doing mods!
...Drill the seal drain-back to .250", Prevents hydraulic front seal blowout.
...Drill a .055"-.067" hole between Line Pressure & Converter Charge passages, This will provide converter charge & lubrication regardless on the pressure regulator valve position.
...Drill the Stator to O/D lube hole out to .125", Increases lube flow to the overdrive section.
...Install Sonnax Part# 4L80E-LB1 line booster kit, Large ratio boost valve & 10% over PR Spring, (Good to 600 ft. lbs.)
...Install a new pump/converter bushing & BOTH Stator Bushings!
...Install a new set of Pump Gears, If your budjet allows.....Install
THESE