View Full Version : 1992 LS swap

03-20-2012, 01:23 AM
Hi. I am new to the forums and new to building/swapping/working on/etc. engines. I recently purchased a 2003 5.3l Vortec from a wrecked silverado. I will be purchasing a 1992 z28 later this week, I hope. It will be a 82-92 IROC style for sure tho. I am not looking to do anything too crazy right off. I basically am just looking to swap the engine into the chassis and get it running well, then I will start tweaking performance etc.

what i have:
-2003 5.3l vortec (LM7) complete from oil pan to intake
-wiring harness and ecm matching the motor
-all the brackets for the truck accessory layout
-alternator and a/c compressor

what is missing:
-power steering pump

So basically, what I need to know is:
-will the basic F-body accessory layout fit into any 82-92 chassis?
-which motor mounts should i get from where?
-will the stock truck intake, fuel rods, etc. work? (chassis i should be getting has a cowl hood)
-will the stock truck exhaust manifold fit into a 82-92?
-what oil pan should i go with?
-can i run the mechanical fan that came on the engine?
-will a 4l60e bolt up to the engine without modification? and do the stock wiring harnesses work with them?
-do i need to do anything with the fuel system? i am not sure if what was in the 82-92 camaros would work with my engine.

My car will be closest to a daily driver more than anything. It won't be driven daily, but it will be driven often. I have about $1500-2000 to play with. And like I said I am not looking for anything more than just what the stock performance from the engine is, for now. I just want to get it in and driving for the time being. Any help/info is GREATLY appreciated. Thanks. Let me know if I left out anything pertinent.

03-20-2012, 02:20 AM
Check the stickies. You will need to get at least a walbro because the tpi pump will not keep up with the 5.3. I learned this the hard way lol. You can use tpi electric fans and a stock fbody (ls1 car) oil pan. Fbody accessories will work. If you keep the AC you will have to notch the kmember if you use the stock kmember. Get a tpi car, will make it a lot easier IMO.

03-20-2012, 02:31 AM
which walbro do you recommend? and sorry, but what does tpi stand for? i tried looking it up.

03-20-2012, 02:35 AM
Tpi is "tuned port injection." Its the fuel injection GM used on the 3rd cars from 85-92. 85-90 sirocco and 91-92 z28 had tpi.
The tpi cars came with electric fans and a baffled fuel tank which is needed if your staying fuel injected.
I used a 255 walbro when I had my swap. You can get one as a kit for about 120 or so.

03-20-2012, 02:36 AM
Sirocco is supposed to be Iroc. Damn autocorrect. Check out they will have everything you need to know a out the swap. Good luck

03-20-2012, 02:42 AM
Thanks man!

03-20-2012, 03:14 AM
Anyone know if this oil pan will clear?

03-20-2012, 10:37 PM
no, it won't need a walbro gss340 for the pump.

read the lsx swap sticky on the covers all of your questions and more. there is more information in the lsx swap section than you can shake a stick at.

$1500-$2000 will be pushing it budget wise, that will get ate up pretty fast with the oil pan, front drive accessories, intake(truck intake won't clear the stock hood), exhaust, tune, and all the little stuff you forget about.