How One Tuning Shop Plans to Revive the GM V-10 LS Engine

Yes, you read that right. As far back as 1994 GM was toying with the idea of building a V-10. Mopar and Ford had one, so it should come as no surprise that GM would be interested in doing an engineering study on it. Instead of
spending money to continually upgrade the big-block V-8 and make it comply with emissions, a V-10 based on the same platform had many advantages.

02 GM V10 Stillborn Prototype

From a performance perspective, a 10-cylinder also has advantages, thanks to an increase in piston area (at the same displacement), that could help push the platform to new heights. Had it come to fruition, there would have been an iron truck block and an aluminum Corvette version.
The proposed GM V-10 was essentially a Generation III LS engine with two extra cylinders, a 90-degree block with uneven firing cylinders like the Mopar V-10.

03 GM V10 Stillborn Prototype

According to a GM HighTech Performance story by David Vizard, GM spent $310,000 on prototype tooling for two iron blocks that were ordered
and “still floating around the bowels of Powertrain Advanced Engineering in
Pontiac, MI.” With so many changes over the years, including the newly opened Global Powertrain Engineering Center built at the same location, some of these old relics have a tendency to walk out the door. This brings us to today. The folks at VC Fabrication in Kansas City, Kansas, have one of these engines in their possession, and it was recently rebuilt with new pistons. Check out this video of the crank being balanced.