L99 vs LS3

[firebirdzig]

Is there a way to tell the difference between an LS3 and L99 other than seeing a manual or auto trans attached to it? Is there maybe a different number stamped on the block? Any help is greatly appreciated. Thanks!

[71maroesteban]

A l99 will have a water pump that is sort of spaced out as it has VVT and DoD which can been seen once you remove the intake the valley cover will have like a maze Pattern other than those two things the blocks and heads are the same

[firebirdzig]

What do you mean by spaced out?

[130fe]

Don't the L99s also have VVT? LS3s do not.

[1989GTA]

Don't the L99s also have VVT? LS3s do not.

That is correct. The easiest way to tell if you know what you are looking for is the camshaft timing chain cover.

[firebirdzig]

Is there a picture comparing the 2?

[dhutton]

Here you go:

http://www.speartech.com/category_s/1822.htm

Don

[firebirdzig]

Thank you very much