Generation IV External Engine - L92 newbie

New to L92 engines but not new to LS based engines. I've done a 4.8 swap into a wrangler, a LS1 swap into a 79 camaro and a 6.0 into a wrangler. Oh and my daily driver is a 98 Wangler with a LS6. So enough about me!

That being said I purchased a 2009 6.2 out of a Denali. 1400 miles.

It has VVT.

I have few questions.

1. Didn't get the starter. Are all LS starters the same? I have a 6.0 starter.
2. Coil packs. I didn't get the coil packs. What year works?
3. I'm looking at the LS3 intake. Can the stock Corvette injectors support 500 hp?
4. If I don't want the VVT all I need to do is change the front cover to the LS2 and change the cam sprocket?
5. The head casting are #0821. Are these LS3 with the good valves?

Thanks for all the help.

Don't know what is going into yet.

Im pretty sure the starters will interchange.

Coil packs will interchange, just watch to make sure the harness and connector match.

The LS3 intake will work, I swapped to the FAST 102mm LSXR myself. The stock LS3/LS7 injectors are 41lb/hr and will handle 500fwhp.

I wish I could have VVT, keep it!!! But people get a different cover, and change the phaser to a regular cam gear typically :( Comp has a cam/spring swap that makes 500hp w/VVT!

Your heads have the heavy valves. You have to get a an actual Vette engine to get the lightweight valves. I had Lingenfelter CNC me those exact heads, and I bought the lightweight valves from the dealership.

Just make sure you dont have AFM!!!!(aka DOD)

The LS3 intake flows way better on the high end, but you have to mod the truck accessories and wp for it.

If its for a 4x4 application keep the truck intake and get a VVT cam.

Actually the LS3 injectors are 39 lb and are the same as the LS7 injectors so 500hp is no problem.

The LS3 intake will be fine, don't wast your money on a FAST.

The L92 valves are fine, you shouldn't have any issues with them.

Actually the LS3 injectors are 39 lb and are the same as the LS7 injectors so 500hp is no problem.

The LS3 intake will be fine, don't wast your money on a FAST.

The L92 valves are fine, you shouldn't have any issues with them.At 500hp I think he might want the extra 15hp of the FAST manifold, I know I did.

And lightweight valvetrain is always good. Its such a big help with valvetrain stability!

looks like a fun build :)

Sorry, a ported LS3 is making about the same as a $800 FAST so show me the bang for the buck in that deal. If you have money to burn get a FAST.

The 6.0L and 6.2L engines will not get the benefit of the FAST, they do not move enough air. There are plenty of dyno runs on here and other sites now to prove that the FAST is not very good on smaller engines. It rates right up there with putting 42 lb green tops and a 100mm MAF on a small engine, looks good in your sig but doesn't do anything for performance.

The 6.0L and 6.2L engines will not get the benefit of the FAST, they do not move enough air. There are plenty of dyno runs on here and other sites now to prove that the FAST is not very good on smaller engines. looks good in your sig but doesn't do anything for performance.I dont know where you get your information from but my reseach shows, all on 6.2Ls

Spectacle Solutions: +15rwhp +15rwtq on a 100% stock 2010 camaro
Texas Speed: +15hp +16tq on a 580hp LS3 engine
Texas Speed#2: Had FasterProms, Jeremy F, port the LSXR and it lost all of it gains and even lost to the stock intake after porting.
Vengance : +12rwhp on a Vette

I do agree it looks nice when I pop the hood, but you can really feel the gain in power. Im speaking from experience, not from reading forums with a negative predisposition.

You should really re-read this thread.

http://www.ls1tech.com/forums/dynamometer-results-comparisons/1189437-any-vendors-ready-come-clean-ls3-l92-fast-2.html

There is a lot to consider, as to the vvt many like it, but what computer are you going to use, also I have heard of several valve failures even in stock applications, as to the DOD some have this feature and I think it can determined that it is present if the valley cover is not flat, also the choice of intakes is not very good yet and some will interfer with the truck wp and belt configuration. There is suppose to be a new truck, fast intake out soon.

Thanks for all the input. I may put this in a 65 vette so space is at premium.
It's one reason to remove the VVT. The other is no one makes an EFI harness that integrates the engine control and the 4l60e control. To keep the VVT either stand alone trans control or upgrade to a 4l70e which are quite expensive.

Any word on the dual plane L92 carb intake?

Thanks again.

Any word on the dual plane L92 carb intake?


The dual plane LS3/L92 carb intake is listed in the new GMPP catalog.

p/n 19166952. I went to my local dealer and they said that p/n was no good. Some vendors list that p/n with "call for price"

I guess its not released yet.

Hey, congrats on the great find! :cool:

I've also been swapping in an L92, & like you, space is fairly tight, so I've had to be somewhat creative when trying to make it all fit under the hood, etc. I sure hope that you can keep the VVT, that capability adds SO much to the ability to "have your cake AND eat it too" when it comes to power with drivability. I've posted a picture of radiator clearance in my vehicle right here (http://www.ls1tech.com/forums/12441795-post199.html) (also make note of the quotes at the end of that post!), but if you care to see the whole swap thread, you can click on the picture in my sig. Maybe it'll help you with fitment issues, etc.

Good luck with the build, & make sure to post lots of pictures! :thumb: