sethracer

My 2005 Corvette, LS2 6-sp, is now getting older, coming up on 12 years. It runs fine. But I am thinking of replacing the motor with a stronger, newer LS motor. My motor is a 24/slot position sensor motor, most of the LS3s and later are 58/slots. Also, I live in California, so I have to maintain smog legality. No long-tube headers, etc. I thought about the following combination. Go to a slightly larger displacement motor, 6.2L with the crank retaining the 24/slot sensor, ported LS3 heads and install a heartbeat blower kit from Magnuson. I would install a complete LS7 exhaust system manifolds to exhaust tips, as well as the stock LS7 cam. The thrust of this is to have a powerful motor which will still pass all California smog requirements. Any thoughts? Who might build this motor for me? Am I asking too much?

Flyr282

Contact Cunningham Motorsports or Synergy Motorsports. Both good shops in Ca. Synergy is up in your area. I have a Z06 and I have a CMS cam in my car. You can notice there's a cam but its not that aggressive. Both shops offer a "smog" cam that will still pass a sniffer test, although most of ca did away with that. You could go with a Fast or msd intake, they come with CARB stickers. Also a bigger throttle body. I may also have a full Z06 exhaust for sale too off my car, right now I have the factory H pipe and mufflers for sale. Changing up to long tubes soon.

Is2scooby

Awesome suggestions. Are the MSD fully CARB certified yet? I just bought my LS7 MSD 3-4 months back and it was still "CARB Certification Pending" with no sticker.

Just FYI.

Flyr282

Not sure I've got a ported fast 102 on my car and it came with a sticker.

sethracer

Thank You great ideas.

Chiselchst

Might never get checked, but...
Ca smog laws do not allow you to change the engine, unless you comply with the Y/M emissions of that engine if later than the chassis, IIRC.
Why not just do the same mods to your LS2? Many folks here are running those to great HP numbers with reliability too...

subfloor@centurytrans

If you can get past the visual test you can swap motors without issue.

seevi

I don't believe you can change the 58 tooth LS3 reluctor wheel, and even if you could it would ne a lot of work. Best to replace your E40 with an E38 ECU.

subfloor@centurytrans

Yes, you can easily swap the reluctor wheel.

Although the crank has to be out of the motor to change it, doing it that way would be a LOT easier than trying to change the PCM and all the associated electronics.