LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

1992 Z28 LQ4 swap

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Old 06-07-2012, 05:54 PM
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1992 Z28 LQ4 swap

So I had this car in high school. A 1992 Z28 Camaro 25th Anniversary black w/ red stripes. Needless to say driving was a blast in high school. 6 months after graduating high school I blew the worn out 350 TPI . Well here I am 5 years later just having graduated college and I have finally started amassing parts to bring the old Z28 back to life.

I have just purchased a complete lift out 6.0 LQ4 (engine, computer, harness, pedal, TAC module) through LKQ w/88,xxx miles out of an 01 Silverado, Fbody LS1 oilpan+ windage tray+pickup+new gaskets, new GM clamshell LS mounts, Spohn polyurethane bushings, Spohn LSX adapter plates, 4th Gen F-body fuel tank, 4th gen F-body coolant tank, torquer V2 cam, tsp 7.400 pushrods, beehive valve springs, stainless hawks LT headers 1-3/4 primaries, 4L60E out of an 00 Z28, Circle D 3200 stall torque converter, all the air conditioning components , all accessories and brackets out of a 4th gen Fbody, new water pump, alternator, power steering pump w/ reservoir, harmonic balancer and bolt, ARP header bolts, LS7 lifters, every gasket on the damned engine, comp cams rocker trunion kit, LS1 intake, LS1 Injectors, LS1 fuel rails, I'll keep updating this list.

I am planning on using and abusing the stock 700r4 until she gives out and will eventually build up a 4l60 or 80e for it. (That was the plan when I started this thread but have since bought the 4L60e.)

I work at my family business which is an automotive repair facility specializing in exhaust. I will be getting the Hawksthirdgen long tube headers(got them) and using out mandrel bender to build custom exhaust. Hopefully true duals but I am probably just dreaming

I will start to post some pictures tomorrow of the car and what not but for now I am excited as ever to get a start on my ride!!!!!!



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Last edited by WillyMoPena; 05-22-2014 at 10:58 AM. Reason: Updated Parts list
Old 06-09-2012, 09:10 PM
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Re: 1992 Z28 LQ4 swap

nice car and welcome, take a lot of pics, hope to join you lsx guys soon
Old 07-09-2012, 12:24 AM
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Re: 1992 Z28 LQ4 swap

Got the car uprooted from our shop and to our house.
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LQ4 complete pull out w/ engine, computer, wiring harness, and gas pedal/TAC modulej; $1600
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Dummy LS block for mock up.
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Old Clamshell mounts that were mounted to the frame
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New GM 98-02 LS1 Clamshell mounts w/ stock bushings taken out and replaced w/ new polyurethane bushings from spohn and will mount to the bottom of the block.
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Dummy block fits perfect
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Last edited by WillyMoPena; 07-09-2012 at 12:47 AM. Reason: more pictures
Old 07-09-2012, 12:45 AM
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Re: 1992 Z28 LQ4 swap

Hugging the transmission
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Motor almost stripped down to where I can clean all the grime off

317 head casting
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Last edited by WillyMoPena; 07-09-2012 at 12:48 AM.
Old 07-09-2012, 01:02 AM
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Re: 1992 Z28 LQ4 swap

Welcome to the lsx world lol.Lq4 with longtubes should serve you well for a nice daily cruiser.I wish I took the time to really clean my block before dropping it in,take your time and it will turn out perfect.Keep us posted and good luck on your build.Nice car to start with.
Old 07-09-2012, 04:05 AM
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Re: 1992 Z28 LQ4 swap

can't wait to see the path this z28 takes, on standby for more updates
Old 07-09-2012, 09:20 AM
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Re: 1992 Z28 LQ4 swap

Take your time with the swap and it should turn out real nice. Seems like most people start out wanting to use their 700r4 at the start of their swap, but end up using a 4L60e before it's all said & done. Do your homework on it.

What kind of lens do you have on your camera? It looks like it's convex or something. Some of your pics seem distorted.
Old 07-09-2012, 10:47 AM
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Re: 1992 Z28 LQ4 swap

If you have access to an exhaust shop I'd recommend making your own headers! It's always nice to do something yourself and save some cash IMO. Clean that block up too. At least tear it down and re-ring it. Just following torque specs it'll go back together in no time. Plus a pressure washer and some paint will make it look 10X better when you open your hood.

What front accessories are you using? What harness PCM combo? Intake? AC? Cruise? I've a '91 so more power to ya!
Old 07-23-2012, 08:01 PM
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Re: 1992 Z28 LQ4 swap

Originally Posted by robguitargod1
If you have access to an exhaust shop I'd recommend making your own headers! It's always nice to do something yourself and save some cash IMO. Clean that block up too. At least tear it down and re-ring it. Just following torque specs it'll go back together in no time. Plus a pressure washer and some paint will make it look 10X better when you open your hood.

What front accessories are you using? What harness PCM combo? Intake? AC? Cruise? I've a '91 so more power to ya!
Funny enough I work @ my fathers exhaust shop that he started 27 years ago and my entire family runs today. That being said though I would rather just buy headers than have to go through the pain of making them but that is just me. I am degreasing the entire block up tomorrow as well as hitting it with the pressure washer. I haven't decided how far I am going to go into the motor internally though. Regular maintenance for sure. I will be using the front accessories off of an ls fbody 98-02, A/C all the way (must notch my kmember for compressor clearance), most likely an ls1 intake & fuel rails. Not sure what I am going to do with the harness and pcm but I have both from the motor and the car.
Old 07-23-2012, 08:02 PM
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Re: 1992 Z28 LQ4 swap

Originally Posted by dprest68
Take your time with the swap and it should turn out real nice. Seems like most people start out wanting to use their 700r4 at the start of their swap, but end up using a 4L60e before it's all said & done. Do your homework on it.

What kind of lens do you have on your camera? It looks like it's convex or something. Some of your pics seem distorted.
Got my camera fixed so the next pics should be better
Old 07-24-2012, 08:25 AM
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Re: 1992 Z28 LQ4 swap

Nice Any progress in the last two weeks?
Old 07-24-2012, 12:37 PM
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Re: 1992 Z28 LQ4 swap

Will have updated pics tonight.

Last edited by WillyMoPena; 07-24-2012 at 12:37 PM. Reason: spell check
Old 07-24-2012, 01:37 PM
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Re: 1992 Z28 LQ4 swap

Nice build! Your car is the t-top version of my vert... Looking good
Old 05-21-2014, 02:25 PM
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Re: 1992 Z28 LQ4 swap

Have done some serious work here in the last two years lol! Car is coming together. A long list of pictures and comments to come hopefully later tonight!
Old 05-22-2014, 10:48 AM
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Re: 1992 Z28 LQ4 swap

forgot about this build, nice to see you back among the posting.

where in ks are you?
Old 05-22-2014, 10:59 AM
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Re: 1992 Z28 LQ4 swap

Topeka! Adding tons of pictures at lunch today!
Old 05-22-2014, 11:03 AM
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Re: 1992 Z28 LQ4 swap

Originally Posted by WillyMoPena
Topeka! Adding tons of pictures at lunch today!
right on, i'm about an hour north of you between hiawatha and atchison.

what is the name of your family business?
Old 05-22-2014, 11:07 AM
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Re: 1992 Z28 LQ4 swap

Originally Posted by STREETDEMON
right on, i'm about an hour north of you between hiawatha and atchison.

what is the name of your family business?
Hogan Muffler and Brake. www.hoganmuffler.com
I used your thread a ton while amassing parts and planning by build!
Old 05-22-2014, 11:18 AM
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Re: 1992 Z28 LQ4 swap

Originally Posted by WillyMoPena
Hogan Muffler and Brake. www.hoganmuffler.com
I used your thread a ton while amassing parts and planning by build!
glad i could help! i'll have to stop in and check out your shop next time i'm through topeka.
Old 05-22-2014, 11:43 AM
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Re: 1992 Z28 LQ4 swap

Originally Posted by STREETDEMON
glad i could help! i'll have to stop in and check out your shop next time i'm through topeka.
Absolutely do so! My name is Joshua. I'd love to see your car as well. Question too: You drilled a 2" hole under the HVAC box and mounted your pcm under the dash is that correct? If so do you have any pictures of when you did that?
Old 05-22-2014, 11:50 AM
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Re: 1992 Z28 LQ4 swap

Evolution of the motor from greasy pullout to nice clean LS ready to drop!
Pull out 6.0 in all of its greasy glory!
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Starting to tear her down
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Hole drilled to facilitate alternator bracket
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Front Accessory drive on for mock up purposes.
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Nice tight fit on the alternator after drilling the hole and installing the bracket
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Degreased......ish
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Decided to paint the block black
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Attached Thumbnails 1992 Z28 LQ4 swap-2012-06-04_14-26   1992 Z28 LQ4 swap-20121202_200513.jpg   1992 Z28 LQ4 swap-20121111_185329.jpg  

Last edited by WillyMoPena; 05-22-2014 at 12:17 PM.
Old 05-22-2014, 12:00 PM
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Re: 1992 Z28 LQ4 swap

Originally Posted by WillyMoPena
Absolutely do so! My name is Joshua. I'd love to see your car as well. Question too: You drilled a 2" hole under the HVAC box and mounted your pcm under the dash is that correct? If so do you have any pictures of when you did that?
the only picture i have is the one from my thread, it isn't doesn't show much. it is right below the hvac box, and right above the "frame" rail. i lined the edges with fuel line, and it has steel wool stuffed in it from when i was painting.

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Old 05-22-2014, 12:19 PM
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Re: 1992 Z28 LQ4 swap

Primer on the intake, p/s bracket, and alternator bracket and then black paint.
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Under the valve cover
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Under the heads
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88k worth of Kansas gas lol
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Black Block
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Underside with truck windage still on
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Broken down
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Last edited by WillyMoPena; 05-22-2014 at 12:23 PM. Reason: Photo Correction
Old 05-22-2014, 12:21 PM
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Re: 1992 Z28 LQ4 swap

Camshaft TSP Torquer V2
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Who wants a black block??????????????????? I don't know what I was thinking so Chevy Engine it is!
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Timing cover painted and back on after and LS2 timing chain and new oil pump(I believe LS2 as well, Melling pump)
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One head back on
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Help from a friend
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Two heads back on!
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Heads were cleaned up, new valve seats, springs, etc. installed.
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Going to need an injection cleaning once she is running lol
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Back together w/o the ac on
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Last edited by WillyMoPena; 05-22-2014 at 12:25 PM. Reason: Photo Correction
Old 05-22-2014, 12:21 PM
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Re: 1992 Z28 LQ4 swap

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With the a/c on
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Old 05-22-2014, 12:27 PM
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Re: 1992 Z28 LQ4 swap

More to come!
Old 05-22-2014, 02:35 PM
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Re: 1992 Z28 LQ4 swap

Looking good!!
Old 05-22-2014, 03:15 PM
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Re: 1992 Z28 LQ4 swap

Nice progress *****! Is that a Chevelle in the garage beside the engine on the stand? Are those new head bolts? Did you install better rods bolts? I've heard the stock rod bolts are the weak link in the bottom end on these engines. Keep up the nice work.
Old 05-22-2014, 03:46 PM
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Re: 1992 Z28 LQ4 swap

Originally Posted by dprest68
Nice progress *****! Is that a Chevelle in the garage beside the engine on the stand? Are those new head bolts? Did you install better rods bolts? I've heard the stock rod bolts are the weak link in the bottom end on these engines. Keep up the nice work.
68 Chevelle Convertible 427 5 speed dual carbs But that is my pops' project. They head bolts were new yes but I left the stock rod bolts. Hopefully all will be fine :/
Old 05-22-2014, 09:38 PM
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Re: 1992 Z28 LQ4 swap

Notch in the crossmember for some oil pan clearance. Would have been reallllllly tight without it but probably would have fit.
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Progression of the notch in the crossmember for the A/C compressor
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[IMG]http://i1054.photobucket.com/albums/...520_212748.jpg[/IMG]
Boxed up
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Painted up
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Engine bay is almost ready to accept the motor

Last edited by WillyMoPena; 05-22-2014 at 09:42 PM. Reason: Photo Correction
Old 05-23-2014, 08:43 AM
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Engine: 6.0L LQ9
Transmission: T56
Axle/Gears: Dana 44 3.92
Re: 1992 Z28 LQ4 swap

i'm spinning my engine to 7k rpm on stock rod bolts.
Old 06-05-2014, 10:03 PM
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Re: 1992 Z28 LQ4 swap

looking forward to watching this build. i just came in possession of an 88 iroc-z and am planning on doing an LQ4 build. psyched to see the progress of this.. especially as ill soon be following your steps!
Old 06-06-2014, 01:08 AM
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Car: 88 Formula, 90 Iroc RIP, 92 RS Sold
Engine: 305 to 350
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Re: 1992 Z28 LQ4 swap

Originally Posted by STREETDEMON
i'm spinning my engine to 7k rpm on stock rod bolts.
I've research alot on this and what I gathered it's 50/50 rod bolts my blow or may not spinning around 7000 above and beyond some dont have issues others do

rod bolts are the weak point I upgraded my rod bolts to arp if your block is apart it's cheap insurance , but if block was taken apart I probably wouldn't bother and use a blown rod as excuse to get better block lol
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