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Lq4 Th350...

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Old Feb 23, 2010 | 12:14 PM
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Default Lq4 Th350...
Not sure exactly which flexplate, bolts, and spacer I need to put a th350 behind my lq4. I've searched and searched and everybody has a different opinion. Any of you guys actually done it? I have the stock curved flexplate, gen1 converter, and the gm spacer. Is this the correct setup? Thanks
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Old Feb 23, 2010 | 05:14 PM
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just stick with actual 6.0 lq4 plate and spacer with matching or arp bolts. can use 10 sbc tq coneverter or custom. not reccomend hi rpm with stock plate and bolts.
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Old Feb 23, 2010 | 05:18 PM
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Yep, i have a LQ4 flex plate i am not using if you need it. Has the spacer built onto it.(T56 FTMFW)
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Old Feb 23, 2010 | 06:29 PM
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Originally Posted by NemeSS
just stick with actual 6.0 lq4 plate and spacer with matching or arp bolts. can use 10 sbc tq coneverter or custom. not reccomend hi rpm with stock plate and bolts.
Ok, thanks. I think I've got ls1 flexplate bolts, not the longer 6.0 bolts, that's what was throwing me off. The spacer will go between the TQ and the flexplate then, correct? Crank-flexplate-spacer-TQ...


Originally Posted by ZONES89RS
Yep, i have a LQ4 flex plate i am not using if you need it. Has the spacer built onto it.(T56 FTMFW)
I think mine will work, thanks though. You have the stock 6.0 bolts? T56 was the plan, just got a really good deal on my trans lol
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Old Feb 23, 2010 | 07:38 PM
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Hmmm, have to look around and see if i have them and dont need them.
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Old Nov 6, 2010 | 08:07 PM
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ok here is a th350 via google



and my LQ4
from the looks of this would i just need to elongate the holes circled in red on the flexplate of the Lq4?? and will i need longer bolts??
thanks kev

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Old Nov 6, 2010 | 09:13 PM
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^^^ That doesn't appear to be a LQ4, an LQ4 would be backed with a 4L80e which would have a 6 mounting points.
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Old Nov 6, 2010 | 10:22 PM
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Originally Posted by built408
^^^ That doesn't appear to be a LQ4, an LQ4 would be backed with a 4L80e which would have a 6 mounting points.
You are correct, In fact if anyone has an lq4 FP with 6 holes I sure could use one.
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Old Nov 7, 2010 | 11:48 AM
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all you need is a stock fly wheel from a 5.3 or 4.8 and the spacer off an 6.0 . the spacer will be mounted between the fly wheel and the converter. the spacer is used this way to help with the shorter pilot on the 350 /700 /400
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Old Nov 7, 2010 | 09:14 PM
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Mine had the spacer built onto the flywheel.
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Old Nov 8, 2010 | 12:52 AM
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Originally Posted by ZONES89RS
Mine had the spacer built onto the flywheel.
it sure did
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Old Nov 8, 2010 | 10:20 AM
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Couldnt remember who i sold it to, LOL.
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Old Nov 10, 2010 | 09:51 AM
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Originally Posted by 1c62nv
You are correct, In fact if anyone has an lq4 FP with 6 holes I sure could use one.
ok, i have checked the block and it is stamped 6.0<< and checked vin it shows as being a 2005 4 wheel drive denali

Originally Posted by 1-87 chevy all you need is a stock fly wheel from a 5.3 or 4.8 and the spacer off an 6.0 . the spacer will be mounted between the fly wheel and the converter. the spacer is used this way to help with the shorter pilot on the 350 /700 /400
thanks 1-87 chevy
Last edited by kvn1011; Nov 10, 2010 at 12:04 PM.
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