I had to install a new LS1 in my Camaro and got a GM Crate engine. The car is a 2000 Z-28. Is there any chance that I got an engine with the so-called LS6 block? The engine did not come with the intake manifold so they used the one from the old engine. Did I get lucky or do I have exactly what was in the car to begin with? Would there be any other differences?

Thanks!

 

Is there that much difference in the blocks? I thought it was just better oil distribution, moved a sensor, and a few cooling vanes... Isn't the big difference between LS1 and LS6 the heads, cam, and intake?

 

For the condensed version............even if you have the LS6 block there is NO difference in power. Yes the oil moves better and yes it cools better, but thats it.

Brandon

 

Should be an LS6 block all 03+ LS1's have the LS6 block, assuming your crate engine was made 03 or later.

 

https://ls1tech.com/forums/showpost....86&postcount=8

there ya go..

 

Should have gotten the ls6 service replacement PN: 12498399 , was one of the easiest installs on my 2002 camaro, which has the ls6 intake already. Thanks to LS1 How to on the PCV redo.

 

LS1 blocks are stronger than LS6 blocks.

 

thought it was the other way around?

 

What does "Stonger" mean? That, given the same rotating assemblies, if they blow up at 7000 the connecting rods in the LS6 won't fly through the block and in the LS1 they will? Aren't the sleaves the same? I can't figure out how the Bay Windows (taking metal out of the block between the pistons) can make it stronger... ...I guess I still have a lot to learn...

 

No, you've got it right. The removed material makes the block weaker.

 

This makes sense to me... You might be able to claim cooler and marginally better oil presssure (hey, not knockin it, keep making it better...), and probably a lot more even pressure behind the pistons (sounds OK to me, too), but in terms of delivering HP or Torque they should be just about identical. In the end, it shouldn't matter much at all which block you have, seems like what's important is the heads, cam, intake, and valve train components.

 

To clarify, an LS6 block is plenty strong, most likely unmeasurably weaker than an LS1 block in a stock bore setup. However, when having a block resleeved, I know it is preferred, if not required, that a LS1 block be used for this very reason.

Shawn

 

ohhhh ok i get ya...didnt know that