Yes it will bolt up just fine, the locations of all the accessories/intake manifold/bellhousing bolt holes are identical on ls1/ls6/ls2/lq9/lq4/ and the 5.3

 

guys...you don't need to just look for a ls1... you can do a lq9 or lq4 = 6.0 iron block for cheap. I'm building a new motor for my turbo silverado. Getting a 6.0 iron block and stroking it to 403 ci. Building it for boost, with headwork will run me $3k. I'm building a 4l80e tranny for less than 1k. All motor with my cam is going to be close to 500whp, 700whp with boost... check out performancetrucks.net to see what some of these truck guys are building for cheap.

 

you will see that I discuss about my build.

Later, Jose

 

i have been doing alot of reserch for this and the ls1 swap is still cheaper than building a 1uz and getting a custom flywheel and clutch set up for it. so my plans are getting a lq4 long block for a 1,000 stroker kit for 2,300 that brings it up to a 427. then 250 for ls6 intake because the truck intake on the lq4 is too tall. then 1000 for l92 heads if not less and 1000 for a t-56 then another 600 in parts to rebuild and make bullet proof. then 100-250 for gms hot cam and 600 for valve springs and rockers and push rods. clutch pedal and master cylinder about 250. and 500 misc because you know youll run into hoses and other little things. so about 8,000 for a done up motor and trans thats cheap it cost 4000 just for heads on the 1uz. and this combo i should put out well over 500 to the wheels. i forgot a few things like the drive shaft so i sure everything said and done it will be a 10,000 dollar swap not including labor still the cheapest way to reach my goals...

 

Tom, that's a great list...I forgot to mention engine management! no need for expensive standalone or piggy back. The LSx ecu can be flashed with a custom tune!!!

 

Thats exactly what I said haha

look at some of these insane deals weve been getting local in socal
http://www.ls1tech.com/forums/wester...6-pullout.html

This was an INSANE deal if I wasnt buying a GS400 I would have picked this up instantly

 

A GM Hot Cam is a complete POS. Its mild as **** in a stock 346 motorand uses lobe technology that was developed back in the late 90's. A custom spec'd cam is a necessity with a nice stroker longblock.

If you were every seriously interested in building a 408 or 402 LSX stroker you'd be 10X better off just ordering an already assembled shortblock than wasting your time and money tearing down a stock longblock, having machine work done, balancing, assembly, blah blah, blah.

A 427 6.0 build typically frowned upon because with a 4.25 crank VS a 4.0 crank they cannot withstand any type of power adder due to the paper thin ringlands and the insane stroke makes it a major risk to take it to any decent RPM.

Also an LS6 intake will only work with cathedral port heads, 806's 241's, 243's, 799's etc, It will not even bolt up to L92 (rectangular port) nor function with L92 heads

 

Now when you say SS, which model are you talking about, Camaros? I'm pretty sure anything weight with 450hp on tap isn't going to be "slow", and driving an LS_ GS you would have massive amounts of torque sitting at idle, and low rpms, unlike the NA-T setup. I haven't seen too many LS_ GS's, but I do now that CleanS14, or Jay, gets a lot of attention with his LS1/T56 GS300, and his motor is stock.

Long, the LQ4/9 is an LS_ motor, just got a different RPO number, but the same design pretty much with a few exceptions. There is one out in Savage at Highway 101 Auto Salvage, just sitting in like an 03' 2500.

I think your thinking about the 408ci build, Here's a great article that shows them putting together a little LQ9 408ci build. http://www.gmhightechperformance.com...ild/index.html With a healthy budget, of about $12k they built this beast that puts out 554hp and 508tq. Now for ****s and giggles, I would like someone to say how far would $12k take you in a 2JZ, because I don't know, I'd guess along way... but the thing is that the 408 starts at 550hp, then you can supercharge it, turbocharge it, run nitrous, etc. than your around 700hp, and that's all across the entire RPM range, not just above 5k Rpm.

I like the list, but you've left a few things off of there. First build the 1UZ is expensive, but there only so many things you can do to it. As far as the LS_ I would think $8k might be a little conservative for a swap. As you mentioned hoses, fuel line, clamps, AN fittings, shipping, engine/tranny mounts, drive shaft, bearings, rings, tools, spark plugs, coolant, oil, trans fluid, gaskets, exhaust, air intake, as none of these were mentioned as well as time which all adds up, fast. Yes, the engine work itself is pretty straight forward, but even then you haven't accounted for any machine work, which again, adds up even faster. The LQ_ needs to be bored out to achieve the 408ci displacement, new pistons need to be fitted to the rods, etc, etc, so machine work can't be avoided.

That is some great stuff/information, it's nice to have a real LS_ guy around here with some answers.


One a side note: I would like to do a little advertising, this weekend on powerblockTV (which is a joke), they dyno'd and installed an 'E-Rod' motor, which is a base LS3, with some serious power to boot. It leaves the factory with something like 450hp 424tq, and is 50 state emission legal. With a little timing, headers, etc, it made just shy of 500hp/tq Now that's a platform to build on.

 

no, I'm thinking of a 403ci...408 would have to bore the motor...

 

Haha, sorry, I just hadn't heard of this build before so I figured you meant the 408. I'm in for anything that represents displacement.

 

yea, figure the less 5ci, you'll have stronger cylinder walls with room to bore later if there's ever a rebuild.

 

I almost bought a 5.3 out of a Suburban yesterday because i was going to get a steal on it as the motor didn't turn over, but I decided I have enough on my hands already and will save that for another day.

 

Yeah, the GM performance products E-Rod is the 6.2 liter (378cid) emissions package to allow legal installations in kit cars allowing full registration. This LS3 is rated at 430hp and 424tq.

They dyno'd the package complete with factory exhaust manifold and catalysts and exhaust pipe.

Thing that pisses me off is the whole "carbon footprint" deal. Give me a break. Test for real pollution and fuel economy. I want clean air and water but don't want political manipulation.

Anyway, the engine with catalysts, iron exhaust manifolds, small pipe, 93 octane fuel made 496hp @ 6300rpm and 440tq @ 4900rpm. That is 66hp and 16tq more than it is rated.

I wish they had thrown it on their chassis dyno.

 

I'd have to strongly Disagree!

 

I can put together an N/A 420-450RWHP/390RWTQ LQ4 longblock for under $2500
And you can still hit it with a 150-200hit of the giggle juice from time to time.