SwEeTWs6

iTrader: (2)

Evening everyone I just picked up a 2005 C6 at auction with a blown engine….. my question is can I run an lq9 block, still use my ecu so I can pass obd2 inspection? If I can what would be needed to make this swap work in my c6… Thanks in advance for any info

G Atsma

You mean sub the LQ9 block ONLY for the LS2 block?

SwEeTWs6

iTrader: (2)

I guess sub it for the ls2 or maybe put something else…. I guess what I’m trying to ask is what options do I have…. Thanks

G Atsma

I would look for an aluminum Gen IV 6.0 truck block. Likely more common than LS2 blocks, though they are still around, just not as common.

SwEeTWs6

iTrader: (2)

What yrs did those come in? Should work fine with stock ecu?

G Atsma

2007-2013
The ECU has not a single clue which BLOCK an engine is built around. Think about it.....

SwEeTWs6

iTrader: (2)

Thanks budd for all your help…. I actually found someone that will do a resleeve on the damaged cylinder…. Hopefully nothing lose is screwed up or else I’m gna grab a motor somewhere lol

BigBoyWS6

You can use any LS style block (iron or aluminum), aftermarket or GM, from 1997-whenever...... and absolutely nothing will change in your ECU or Emmissions. Only going Gen3 to Gen4 has a couple extremely simple sensor changes like CAM and Knock sensors, they sell a cheap wiring harness for that issue, which is what I bought for my new engine.

BigBoyWS6

My local builder is about to assemble an all new 370ci with forged rods and pistons for boost if you're in the market.

SwEeTWs6

iTrader: (2)

Thanks bigboyws6 I ended up snagging a 05 truck 6.0

the_merv

iTrader: (88)

So that Corvette PCM is 58x Gen IV stuff, keep that in mind.

Block wise, yea they are the same just where the sensors are and some have the DOD stuff where others don't.

SwEeTWs6

iTrader: (2)

The_Merv my 05 is actually a 24tooth reluctor wheel and I grabbed an 05 LQ4 : )

the_merv

iTrader: (88)

Nice, I know one of the LS2's is 58x, might be the TBSS then...

SwEeTWs6

iTrader: (2)

Yea I made sure double checked and triple checked lol

SwEeTWs6

iTrader: (2)

Since I’m going to use my old oil pan and pick up tube what windage tray should I use?

the_merv

iTrader: (88)

The one from the blown up LS2

SwEeTWs6

iTrader: (2)

That one is toast lol

the_merv

iTrader: (88)

Well then why is it a question haha cut the truck one down to the same length.

SwEeTWs6

iTrader: (2)

🤷‍♂️ lol…. Should I do a valley cover block off plate as Im going to mount the knock sensors onto the block… I’m thinking I’m going to have to run a catch can for the pcv system if I do this any suggestions?

the_merv

iTrader: (88)

Yea flate plate on the valley would work if you are bolting the LS2 ones to the side.

I have a Norris PCV Catch Can, it works good.