crash41301

iTrader: (1)

Is this possible?

I am thinking about purchasing an LS3 crate engine, but need to retain my FBody accessories. Is there anything special about this setup that I need to get?

Cheese Weasel

AFAIK, there's no reason at all that you can't use a 4th-gen F-body FEAD with an LS3. I'm pretty sure that the mounting holes are all the same...

MY_2K_Z

iTrader: (1)

You will need to use your fbody balancer for sure

crash41301

iTrader: (1)

so the FBody balancer will fit onto the LS3 crank nose? Does it require modifications?

chuckd71

iTrader: (23)

Externally there isn't anything special about an LS3. The reluctor wheel, knock sensor, cam sensor etc working with your current harness would be the issue.

crash41301

iTrader: (1)

So I'm looking at basically a plug & play + rewiring + PCM here realistically, right?

383z

iTrader: (2)

I was wondering the same thing. Thanks for asking OP.

Project GatTagO

iTrader: (7)

I would not try to use whatever harness you have with your engine now. Sell that with the old engine as that would make it a more appealing package.

Go with the GMPP ECU and harness kit, plug-n-play for the LS3 (the have 3 different versions to match whichever LS3 you get...)

Andrew