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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

LT1 to LQ4

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Old Jan 21, 2012 | 06:46 PM
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Default LT1 to LQ4
so i finally decided to buy an LQ4.
includes everything. PCM, Wire harness, WP etc.

so far i know i have to buy the following.

LS1 oil pan.
LS1 K-Member
LS1 headers.

am i missing anything?
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Old Jan 21, 2012 | 06:50 PM
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Lots and lots and lots of money! I've got almost 4k into my swap and still need stuff
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Old Jan 21, 2012 | 06:52 PM
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You need the rack, ls1 accessories, exhaust, car intake manifold, car harness and ecm, ls1 steering shaft and I would suggest refreshing the engine. Corvette regulator also and a tune and transmission to bolt to the new engine torque converter and flexplate if auto.
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Old Jan 21, 2012 | 06:53 PM
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Originally Posted by 97badass
Lots and lots and lots of money! I've got almost 4k into my swap and still need stuff
lol, not planning on doing alot of bay mods. it will be a drop in swap.
its planned for a long project.

will the 4l60e bolt up with the LQ4? and do i change the flexplate.
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Old Jan 21, 2012 | 08:04 PM
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you have to change it
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Old Jan 21, 2012 | 08:11 PM
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Originally Posted by bizerk1
you have to change it
the flexplate? or the transmission?
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Old Jan 22, 2012 | 08:05 AM
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Flexplate has to be changed out.
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Old Jan 22, 2012 | 09:53 AM
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Originally Posted by 95mysticta
Flexplate has to be changed out.
can you help me out on looking for one? or any sort of info would be awesome.
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Old Jan 22, 2012 | 09:56 AM
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Use a stock ls1 flexplate... They can be had for around 30 shipped
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Old Jan 22, 2012 | 10:04 AM
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From what I've been told you can find one from an early 6.0L truck that had a 4L80e. They had a little spacer and longer bolts so that you can keep your current LT1 torque convertor and 4L60e. I bought mine off Ebay, but they are still available from GM too.

There are some threads you should check out in the LS1 conversions section on this site. TheMerv has one that used to be a sticky about going from LT1 to LS1 where several people lists their conversion threads in it including 97BADASS's thread "going to the dark side".
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Old Jan 22, 2012 | 10:25 AM
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^^ woot getting famous on here
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Old Jan 22, 2012 | 10:34 AM
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Originally Posted by 97badass
^^ woot getting famous on here
I just did heads/cam/intake/TB/RR on my full-bolt on 97 SS with the help of a good friend, but we didn't snap the first picture. LOL I am strongly considering doing a build thread on my rearend project. I have snapped a few pics along the way. It's pretty much down to just finding time to install it now.
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Old Jan 22, 2012 | 10:54 AM
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The following is the motor i bought and comes with all you see in the images.

http://www.ebay.com/itm/130632582794...84.m1497.l2649

as you can see the flexplate on the image. can the same one be used with the 4L60e. about the torque converter i will change it to a diff stall.
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Old Jan 23, 2012 | 01:35 AM
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https://ls1tech.com/forums/conversio...on-sticky.html

https://ls1tech.com/forums/lt1-lt4-m...going-lq9.html

https://ls1tech.com/forums/conversio...dark-side.html
Originally Posted by 97badass
^^ woot getting famous on here
My thread will be up soon, I'm assembling the bottom end now....
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Old Jan 23, 2012 | 01:38 AM
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Originally Posted by 93Z2871805
Those are the ones I was referring to. I ended up staying LT1 'cause there is no way I could afford to go LSX and keep my t56. Just finished heads/cam/RR/intake/TB/11.5:1CR. Should be in the 400 rwhp range. Think I need to upgrade my injectors before I lean on it too much.
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Old Jan 23, 2012 | 01:46 AM
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Originally Posted by 1961ba427
Those are the ones I was referring to. I ended up staying LT1 'cause there is no way I could afford to go LSX and keep my t56. Just finished heads/cam/RR/intake/TB/11.5:1CR. Should be in the 400 rwhp range. Think I need to upgrade my injectors before I lean on it too much.
Sounds like your combo will be alot of fun, enjoy!
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Old Jan 23, 2012 | 05:32 AM
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good luck u need lots of money
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Old Jan 23, 2012 | 05:38 AM
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Its not a lot of money especially if you hunt properly.
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Old Jan 23, 2012 | 05:41 AM
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even "properly" hunting, you're gambling sometimes
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Old Jan 23, 2012 | 09:01 AM
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the list is the following parts i am aware i need.

LS1 oilpan
LS1 Flexplate
LS1 K-Member and Motor mounts.
LS1 Rack and Pinion and steering shaft.
LS1 Filter/Regulator.
LS1 Intake and ThrottleBody.
LS1 Headers.

Im just curious about the WireHarness. Should i be able to just splice in the LT1 connectors to the LQ4 or do i do that to an LS1 harness.

I guess i will find out when i actually start working on it. Will not buy everything at once.
Will work my way around it. Im hoping some stuff i an do without.

Im also worried about the emissions. How will that work or do i need a Tune.
Damn you Texas !!
Last edited by davidc212k; Jan 23, 2012 at 09:30 AM.
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