4L80E & TH400 Tech.

[Dieselwrencher]

Clinebarger, I was wondering if you would share what I need to get to build a 4L80E to hold 600hp reliably. The trans is from a 96 truck. Will that be an issue? The trans is going behind a 2000 5.3 in a 40 Ford with a mid frame S400 turbo and I'm sure it'll see some abuse. I'm going to use the GM PCM to run it so do I need to change any connectors to a later one or is it cheaper to get the adapter harness? Thanks for your time, Ryan.

[clinebarger]

Originally Posted by Dieselwrencher

Clinebarger, I was wondering if you would share what I need to get to build a 4L80E to hold 600hp reliably. The trans is from a 96 truck. Will that be an issue? The trans is going behind a 2000 5.3 in a 40 Ford with a mid frame S400 turbo and I'm sure it'll see some abuse. I'm going to use the GM PCM to run it so do I need to change any connectors to a later one or is it cheaper to get the adapter harness? Thanks for your time, Ryan.

A '96 model will work fine!, It actually has a better/stouter Overdrive Sprag assembly than the '97 & up 4L80E's, However '91-'96 models generally have a weaker 16 Element Intermediate Roller Clutch VS a 34 Element Intermediate Sprag, If yours has the 16 Element Roller Clutch.......At 600hp, You will have to upgrade the Direct Drum/Intermediate Sprag!

On the wiring, Your going to use a 2000 chevy truck 5.3L/4L60E harness? If so, You can just swap some wires around at the Trans Plug & PCM & run 2 Input Speed Sensor wires, The Trans plug will reach.....Simple stuff. Now if your running a 4th gen F-body harness, The Plug will not reach & buying a adaptor harness is best.

Ok, On to the parts list...

Of course you will want to "Dual Feed" the Directs.

Billet Input Shaft, http://www.ckperformance.com/View/CO...ON-INPUT-SHAFT If your planning on running drag Radial/Slicks this is absolutely necessary!

Billet Forward Hub, http://www.ckperformance.com/View/FO...ZED-CLUTCH-HUB Recommended for any Boosted application.

Spiralock Intermediate Clutch Snap Ring, http://www.ckperformance.com/View/TH...UTCH-SNAP-RING

Late 4L80E Direct Drum/Intermediate Sprag, http://www.ckperformance.com/View/6-...L-RETAING-RING

Actuator Feed Limit repair kit, http://www.transgo.com/products.php?...dcountview=Yes

AFL Filter End Plug, http://www.sonnax.com/parts/2031-afl...lug-o-ring-kit

Large Ratio Boost valve, http://www.sonnax.com/parts/2170-lin...re-booster-kit

Line to Lube Pressure Regulator Valve, http://www.sonnax.com/parts/1989-lub...egulator-valve

TCC Regulator Valve, http://www.sonnax.com/parts/2025-tcc...ator-valve-kit

Torlon Check Balls (you need 8), http://www.sonnax.com/parts/1689-checkball

No Walk Case Busing, http://www.sonnax.com/parts/1981-case-bushing Requires careful installation, Cannot use a typical bushing driver...The bushing will break!

Rebuild kit with Frictions, Bands, Steels, Bushings, Seals etc. http://www.ebay.com/itm/4L80E-Transm...-/360815789616
"HEG" High Energy Graphite Carbon frictions are superior to "Red"/"Blue"/"Tan" materials.

Alto rates their proprietary "Red Eagle" friction material as the "Best". Raybestos rates their proprietary "Blue Plate Special" friction material as the "Best". These 2 companies both make HEG frictions as well, But have to pay royalties too Borg Warner because Borg Warner holds the patent on High Energy Graphite Carbon friction material. Alto & Raybestos wants to sell their proprietary frictions because they make the most money that way, Not what is best for the end user!