LQ9 to TH400
10-16-2007, 11:11 PM
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LQ9 to TH400 I'm putting a LQ9 in my 94 Jeep YJ and mating it to a TH400. Do I need an aftermarket flexplate like this one from Advance Adapters?
Heres the motor:
Does the old-style torque converter have a bolt pattern that requires the additional holes on the AA unit, or can it be done with just the crank bushing?
Heres the motor:
Does the old-style torque converter have a bolt pattern that requires the additional holes on the AA unit, or can it be done with just the crank bushing?
10-17-2007, 11:31 AM
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if the 6.0 engine came originally with a 4L80e trans you do not need any adapters,, this is what i have in my s-10 and my brother has the same setup in his malibu with no adapters or spacers
if the 6.0 came factory with the 4l65e then you will need just the cheap spacer from hughes $45,, and just grind out the flex plate to tc holes a bit
if the 6.0 came factory with the 4l65e then you will need just the cheap spacer from hughes $45,, and just grind out the flex plate to tc holes a bit
10-17-2007, 02:49 PM
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if the 6.0 engine came originally with a 4L80e trans you do not need any adapters,, this is what i have in my s-10 and my brother has the same setup in his malibu with no adapters or spacers
if the 6.0 came factory with the 4l65e then you will need just the cheap spacer from hughes $45,, and just grind out the flex plate to tc holes a bit
if the 6.0 came factory with the 4l65e then you will need just the cheap spacer from hughes $45,, and just grind out the flex plate to tc holes a bit
Bear with me, but where does this spacer go, behind the flexplate? What holed need to be ground out? My LQ9 came out of an 03 Escalade, so it had the 4L65E.
Do I use a torque converter from a 3rd gen motor, or an older style. (or for that matter, is there a difference?)
10-17-2007, 04:18 PM
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If you are installing turbo 400 you will either have to have a custom converter built with a extended snout or use the spacer.... The spacer was used on some truck motors with a straight non dished flexplate. When you remove the flexplate you will see the back of the crank, on the back of the crank if there is a very tight pressed spacer then your combo will bolt up with little to no effort.
On our shop car we used a 1998 dished flywheel and ordered a converter custom I did however have to mill the flexplate bolt holes out to line up with the converter bolt pattern.
I have also seen people use the 98 flexplate and install the spacer on after the flywheel with the correct longer bolts.
On our shop car we used a 1998 dished flywheel and ordered a converter custom I did however have to mill the flexplate bolt holes out to line up with the converter bolt pattern.
I have also seen people use the 98 flexplate and install the spacer on after the flywheel with the correct longer bolts.
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10-23-2007, 11:39 PM
#8
10-24-2007, 05:19 AM
#9
i was looking thru one of my books last night, and it said the ls crank is .400 shorter than like a gen 1 crank, from the back of the block to the crank mtg. surface-it then went on to say the spacer goes between the crank and flywheel-i am putting a switch pitch 400 behind my lq4
my engine came out of a 3500 van, had the flat flywheel, kind of rusty behind it-not sure if it has a spacer or not yet-i wonder how much of the crank sticks out past the seal
my engine came out of a 3500 van, had the flat flywheel, kind of rusty behind it-not sure if it has a spacer or not yet-i wonder how much of the crank sticks out past the seal
10-24-2007, 09:26 AM
#10
IIRC the short crank is almost flush with the seal.
Your motor most likely has the spacer. I am 99% sure that if a motor has the flat flexplate it has to have the spacer or the longer crank in order for the ring gear to line up with the starter.
Your motor most likely has the spacer. I am 99% sure that if a motor has the flat flexplate it has to have the spacer or the longer crank in order for the ring gear to line up with the starter.
