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Aug 14, 2011 | 07:54 PM

95formulalt1350

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From: houston,texas

th400

can anyone tell me what i need in parts and what all needs to be done to swap from a 4l60e to a th400?

Aug 16, 2011 | 11:45 AM

95formulalt1350

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Teching In

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From: houston,texas

any advice or help would greatly help just confused on what i need

Aug 16, 2011 | 08:21 PM

cycletech

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th400

gm high tech mag had article installing this tranny into firebird.

Aug 17, 2011 | 02:02 AM

Big Al

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There is a thread here. Do a search.

Al 95 Z28, TH400, S60

Aug 17, 2011 | 07:24 AM

Paul Bell

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From: NYC

Look over in the transmission section. It's a sticky within the "Stickies are in here!" sticky.

Aug 17, 2011 | 10:10 PM

chief455

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Quote:

Originally Posted by 95formulalt1350

can anyone tell me what i need in parts and what all needs to be done to swap from a 4l60e to a th400?

the stickies are helpful

*153 tooth flexplate for 1pc seal with 10.75 bolt circle for torque convertor - be sure to get external or nuetral balance based on your engine
*torque convertor 10.75" bolt circle for th400/th350 chevy - snout will fit the LT1 crank
*th400 short tail (9") from chevy
*dipstick from Lokar/Madman
*trans coolant line adapters to stock lines - or fabricate your own trans cooler lines.
*th400 conversion crossmember (stock 6spd member may work?)
*torque arm mount for th400 - either trans or chassis mounted
*if you want automatic - need vacuum modulator hooked up to intake source
*if you don't - manual valve body
*if you want stock shifter, forward shift - the shifter/cable and trans lever from your 4l60e works, but the cable mount bracket to trans pan will need modified. I had to cut and weld mine to get proper alignment.
* for aftermarket shifter - aftermarket stuff.
*driveshaft - never believe they will fit - you need a th400 trans yoke and must fit the shaft to your car. Maybe you'll get lucky.
*VSS for speedometer/cruise control to work. If you get a later trans from a computer truck / car it might have this, if not you'll need to buy the 40 pulse reluctor, sensor and pigtail. Easy install in trans and hook to your stock 4l60e harness
* PCM - mine did not throw any error codes with the harness left unplugged. Results may vary - you might need trans programmed out of the PCM.
*read the stickies at least 10 times and shop wisely.