I have a LQ4 with a missing crank. The crank was broken. How do I know what year the block is. I need to replace the crank. The 07 and up use the crank with a 58 reluctor wheel and before 07 a 24 reluctor wheel. Is this correct?

 

if its a gen 3 block then its a 24. Is the cam sensor in the back? Where are the knock sensors? Those are a few things that can help you identify which it is if the heads are no longer on it.

 

Im still learning about these engines. The engine is completely torn down. The heads are 317's.

Cam sensor that reads the reluctor?

That is in right in the rear on this block.

There is one sensor in the back of the intake area and what appears to be two kinds of sensors in the lifter valley

 

some 07 blocks are hybrids where they are gen3 and gen4 at same time

buddy has one fresh from GM many years ago and made into a 402

 

Iron block or alum? I thought all the hybrids were alum blocks.

 

iron block, hybrid as it has both gen3 and gen 4 provisions

 

Here is a pic or so.

Iron block.



LQ4 1





LQ4 2






LQ4 3

LQ4 2

 

Looks like a Gen 3 block. (24X)