Silverado 2500HD - LS2 motor?
Drifting
Joined: Oct 2006
Posts: 1,372
Likes: 311
From: Bristol, VT
That is the LY6 which is not an LS2. It has the same bore x stroke as the LS2, but an iron block, and 9.6:1 compression ratio as opposed to the aluminum block and 10.9:1 compression ratio of the LS2. Fuel cutoff is also at 6000 rpm instead of the LS2's 6600, and recommended fuel is regular while the LS2 recommends premium. I also assume it has the truck intake/accessories. Unlike the LS2, it also features VVT. Most likely has a different sized camshaft as well, but that is also just a guess from me.
It is more of a Gen IV successor to the LQ4, and I suppose could also be considered an iron block version of the L76 engine found in some trucks and also the new Pontiac G8 GT.
It is more of a Gen IV successor to the LQ4, and I suppose could also be considered an iron block version of the L76 engine found in some trucks and also the new Pontiac G8 GT.
