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onehundredoctane
onehundredoctane None
12/2/13 10:03 p.m.

Hi all, my name is Matt!

I had been coming back to the Grassroots Motorsports forum for a while now taking notes from another members build thread, and since my "build" isn't exactly like most other typical Nissan V8 swaps I figured it wouldn't hurt to share :)

I bought this car in 2008 after keeping an eye out for over a year I pounced! Picked it up with 180k miles from the second owner for the low low price of (wait for it...........) $2,200. Anyone who is familiar with these cars know they can fetch $5k in stock form at times. This is what it looked like then,

It had a nasty front main seal and valve cover leak at the time of purchase. Which had lead to a very nasty engine bay. . . The interior however, clean as a whistle! After a quick pressure washing I tackled the little things like an overheating issue, bad radiator hose and a ton of other little issues that were so long ago I've forgotten. . .

After getting those drive-ability issues squared away I shifted my attention to the stock green color that I really didn't like. I've always wanted to paint a car charcoal gray metallic, so now was as good a time as any! I love the way this color looks on this car. . .

Around that time I also decided to upgrade the brakes, for the time being I slapped Infiniti Q45 brakes up front, out back I installed the 2003 Altima rotors, Z31 caliper brackets, and Hawk pads all the way around. The fronts didn't stay for long, the rears are still on there today, and balanced the whole set up perfectly!

For reference, here is stock rotor compared to the Altima rotor. .

Not too much later my friend John and I tackled removing that auto-tragic transmission. I have a rule, and it's simple. Only my daily driver can be automatic. Out came that old POS auto-thingy, and in went a 5 speed manual trans... sadly there weren't many pictures taken after I got the manual trans is, too much excite going on lol (yes, you read that right.)

Then at some point I installed the Wilwood Forged internal superlite calipers with Z33 rotors.

I enjoy driving this car so much, the balance, the braking, the handling, I enjoy everything but the lack of power. I would eventually throw Eagle rods, Wiseco pistons, and Brian Crower cams at that little KA24DE and still only manage to make 150 whp. Not cool.

Now my options were boost, or displacement. . . I think you know what route I took. Those in the know will recognize quickly that an LS1, this ain't. All my progress from here on out has taken place within the last two months. Just to give you an idea of how recent this all is.

So began the strip down of this Chevy 5.3, (engine code LM7) which came from a 2003 Chevy Tahoe with 91k miles on it.

on went the Holley motor mounts and Creative steel isolator bushings.

I'm a firm believer that you don't install an engine in a car without popping the oil pan, and in this case, the stock oil pan wasn't going back on, especially if it's going in my engine bay. So Canton got the call and sent the goods :)

Increased oil capacity, and baffled, doesn't get any better unless you go dry sump!

And you can't just keep stock cast exhaust manifolds. . .

Beautiful.

Goodies everywhur lol, you'll notice a bellhousing, input shaft and trans front plate, I had picked up an LT1 T56 to use, and am planning on converting it for use on this LS based V8. I still haven't figured out if that's going to happen. . . I guess we'll see.

Rigid Racing makes the adapter pictured here to allow you to use the Wilwood clutch master cylinder which is required for this swap.

With this being a truck engine being installed in a smaller car engine bay, the truck intake manifold has to go, it won't work in my car due to the hood hitting it. So in goes an LS1 intake manifold, and instantly problems are found. The LS1 intake won't work with the truck accessories. Below you can see my contact points. Here the throttle body and water pump outlet. And here throttle body and accessory bracket.

At this point all the LM7 accessories have to come off.

On went the LS1 water pump (which I'm already thinking about replacing with a CTS-V)

Then the Spec clutch I got with low low miles on it

Then the mating of the trans and engine.

And eventually the drivetrain went into the car, from the bottom

Then just like that, it seemed too good to be true, the engine and trans went in with little fuss! There was a reason. . .

And sadly this is the where I'm currently at with the build. I have a few loose ends that need attention and a parts list I need to sit down and check off to see what all else needs to be ordered. I got married 6 months ago, we're house hunting, trying to start a family, and I just started a new job 4 months ago. . . I have quite a bit going on right now and I'm trying to accomplish as much as I can when I have time to tinker.

Thanks for checking out my build, hopefully I'll have an update soon!

-Matt

MrJoshua
MrJoshua PowerDork
12/2/13 10:08 p.m.

Congrats! (on the marriage and the budget supercar)

ValuePack
ValuePack SuperDork
12/2/13 10:17 p.m.

Well that's a hell of a first post, nice rig!

calteg
calteg Reader
12/2/13 10:23 p.m.

Very cool. I've got an LS1 on a stand with exactly this swap in mind. Any thoughts on the sikky kit?

onehundredoctane
onehundredoctane New Reader
12/2/13 10:45 p.m.
MrJoshua wrote: Congrats! (on the marriage and the budget supercar)

Thanks! I'm not sure which I'm more excited about lol

ValuePack wrote: Well that's a hell of a first post, nice rig!

Thanks! Like I said this is actually several years worth of progress condensed, the V8 swap literally just started. I couldn't be more excited for the finished product :)

calteg wrote: Very cool. I've got an LS1 on a stand with exactly this swap in mind. Any thoughts on the sikky kit?

This is a slippery slope. . . Sikky makes great produts, and they are EXTREMELY proud of those products as well, this is reflected in their prices. My point being, $750 for their oil pan and oil filter relocation kit. . .

Their complete kit goes for $2,750. That's more than I paid for the car!

Now, don't get me wrong, if I had the money I would have just bought the Sikky kit and been done, one phone call, one shipping fee, done.

But I would like to think I'm coming out a lot cheaper going the route I have. I guess we'll see

Jaxmadine
Jaxmadine HalfDork
12/3/13 6:22 a.m.

Arnt the waterpumps all the same?

Conquest351
Conquest351 UltraDork
12/3/13 8:08 a.m.

Damn nice build so far, epic first post. Welcome to the forum and welcome to the engine swappers club.

4cylndrfury
4cylndrfury MegaDork
12/3/13 8:20 a.m.

Welcome to the fray! I love your build. Great first post!

Any ideas what the swap sill do to your weight balance?

onehundredoctane
onehundredoctane New Reader
12/3/13 10:56 a.m.
Jaxmadine wrote: Arnt the waterpumps all the same?

Yes and no. . . there are similarities between all LS based water pumps.

The major differences are the location of the water outlet pipe on the top of the water pump and the thickness of the water pump pulley. I have a comparison pic saved somewhere, I'll post it up when I have a chance.

kb58
kb58 HalfDork
12/3/13 11:11 a.m.

Here's one that's turbo'd

onehundredoctane
onehundredoctane New Reader
12/3/13 11:18 a.m.
4cylndrfury wrote: Welcome to the fray! I love your build. Great first post! Any ideas what the swap sill do to your weight balance?

Actually YES! With the interweb searching I've been doing I came up with this.

The KA24DE I removed (with trans) weights right at 495 lbs.

An LS1 swap (with trans) weights 459 lbs.

From everything I've read online the LM7 swap comes in about 100 lbs heavier than the LS1 swap.

Jaxmadine
Jaxmadine HalfDork
12/3/13 11:23 a.m.

In reply to onehundredoctane:

Ah ok. Never really paid attention to them. Makes sense.

onehundredoctane
onehundredoctane New Reader
12/3/13 11:05 p.m.

Typical LS1 water pump, note upper tube placement, thickness of water pump, thickness of pulley and overall size

Below is a 2004+ Corvette water pump, note pump isn't as thick, pulley isn't as thick, and overall the pump is smaller.

For comparison sake, here is the truck water pump, water neck is completely different

I'm not sure what to label the one below, but I think it came on the newer GTO, CTS-V and Pontiac G8 LS engines. Note the water pipe up top is on the right side.

fidelity101
fidelity101 Dork
12/4/13 8:07 a.m.

I have always wanted to do this to a 240sx! I love the work. looking forward to the progress :)

Brett_Murphy
Brett_Murphy GRM+ Memberand UltraDork
12/4/13 8:59 a.m.

Great first post, Matt. I suspect that you bought the Green 240SX that I was going to buy in 2008. Was it located outside Winston-Salem?

Take that thing out to an autocross or track day and see what it can do! Even if you don't plan on doing much besides cruising in it it is a great way to get to know the limits of your car. You can look up the Triad Sports Car Club or the Tarheel Sports Car Club, but I don't think the 2014 calendars are up yet.

Jaxmadine
Jaxmadine HalfDork
12/4/13 10:22 a.m.

What kinda mpg?

dyintorace
dyintorace GRM+ Memberand UberDork
12/4/13 10:47 a.m.

What a great looking car and a great swap! Welcome!!

onehundredoctane
onehundredoctane New Reader
12/4/13 6:45 p.m.

Thanks for all the compliments guys!

Brett_Murphy wrote: Great first post, Matt. I suspect that you bought the Green 240SX that I was going to buy in 2008. Was it located outside Winston-Salem? Take that thing out to an autocross or track day and see what it can do! Even if you don't plan on doing much besides cruising in it it is a great way to get to know the limits of your car. You can look up the Triad Sports Car Club or the Tarheel Sports Car Club, but I don't think the 2014 calendars are up yet.

Actually I picked this up from a pastors wife in Columbia, SC. So likely not the same car.

Before I pulled the 4 cylinder out I looked into starting auto-x, a few issues here and there kept me from getting started. Scheduling, maintenance needs of the car, etc. I look forward to as many HPDEs and auto-x as possible once it's on the road with its new heart! I've even been planning on picking up a little Harbor Freight trailer to make into a track day hauler, after all, I did install a trailer hitch on my S14. . . :) here are a few of the ideas I've been looking at:

Jaxmadine wrote: What kinda mpg?

I'm not sure if you're asking what kind of mpg it got with the 4 cylinder or what mpg it should get with the V8 in it? I will share that the 4 cylinder got 18-20 mpg with careless driving, and 22-24 mixed city and highway. ONCE and only once, I got 33 mpg highway on flat land setting the cruise at 60 mph. When the V8 swap is complete I estimate it'll be around 20-25 mpg highway.

Jaxmadine
Jaxmadine HalfDork
12/4/13 9:17 p.m.

I ment v8 estimate. I could google...lol.

onehundredoctane
onehundredoctane New Reader
12/4/13 9:47 p.m.

Just looked it up, the engine came from a 2003 Tahoe, EPA estimated mpg is 15 city / 19 hwy.

With that said, please take into consideration that the SUV probably weights more than 4,500 lbs. My car weighting around 2,600 lbs when completed will greatly improve mpg over the boat anchor that this engine came from!

Jaxmadine
Jaxmadine HalfDork
12/5/13 6:14 a.m.

I googled. Some are getting over 30 mpg with an lt1. So temtping to do one. Lol

onehundredoctane
onehundredoctane New Reader
12/5/13 6:48 a.m.
Jaxmadine wrote: I googled. Some are getting over 30 mpg with an lt1. So temtping to do one. Lol

30 mpg? Is that 240sx people with LS swaps?

Jaxmadine
Jaxmadine HalfDork
12/5/13 9:49 a.m.

Yes. 30 highway. Mid 20s in town. With a t56 6 speed.

onehundredoctane
onehundredoctane New Reader
12/5/13 12:27 p.m.

Very cool! Thanks for the info!

Nathan JansenvanDoorn
Nathan JansenvanDoorn Dork
12/5/13 5:50 p.m.

30mpg should be pretty easy with the T56 - great project!

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