First of all, a whole bunch of misconceptions on both sides. SBC and LS engine are not even close in engineering or origin.
SBC started out in 1955 made until 1997 in cars, and even later in trucks. Chevy division designed, same as the Stratostreak Pontiac design, or the rocket olds, design. Clearly a division designed engine that was one of the cheapest to make designs, and why it was vaulted to the only V8 left in the corporate stable until the unveiling of the LS.
LS engine was designed by corporate engineers of GM Powertrain division, GM gave the new engineering over to not a brand of car, but to a division like the Hydramatic division was to transmissions for close to 50 years. One division that oversaw transmission production for nearly 50 years, I never have seen people arguing over which automatic transmission is better, because the same corporate division made all of them. So in roughly 1992 GM combines Hydramatic and the corporate engine building under one umbrella, GM Powertrain. Cadillac, buick and chevy get their engines from GM Powertrain, there are no more chevy engines, just corporate GM.
GMP engineers took all of the best design features of all the former GM designs, and a few from competitors, and incorporated them all into a clean sheet of paper design. There is buick, cadillac, chevy, olds and Pontiac engineering designed into that engine, as well as some ford in there, not sure if chrysler got any credit or not. All the latest and greatest is really not just that, it's proven ideas that work. Now GMP has done the same thing for all their engines, not just the V8 platform.
Now, can the Stratostreak use some of the same engineering ideas to be more efficient? It surely can, current aluminum heads use the LS style combustion chamber, but you can repackage bits and pieces of LS technology, but without redesigning the whole engine you can't repackage everything, GM has years of design into the LS engine, and millions upon millions of dollars into it's design. A small group of enthusiasts can copy some off the stuff, but all of the stuff is what makes the LS engine a whole package.
Hey, for a 70 plus year old design it did well, for many years, it's been adapted and crutched further than other designs have, so it was a great feat of engineering to begin with. I love the Stratostreak design, I won many a battle over other brands with it. I worked harder, spent more money, but I was brand loyal to it, and still am.
I do own a 2005 GTO with an LS2 in it and I don't feel I betrayed my loyalty to the Pontiac Stratostreak because I own it, It ISN"T a chevy engine, it is a GM manufactured engine with input from all the former divisions designs, so there is Pontiac design in there too.....
Not many others have designed, and made Stratostreak T Shirts because they were infatuated with it, I have...…..
