Although the LS2 intake manifold closely resembles the LS1/LS6, it's a three-piece unit that is vibration welded together. All LS2 manifolds have a 90mm throttle body opening and are set up for ...

While the LS6 is a good intake, the manifold developed by FAST is even better. The engineers flipped the LS1 market on its head when it came out with the original 78mm and 90mm intakes.

Real LS6 intake manifolds are most easily identified by their GM part numbers, and 12561184 and 12573572 are generally the most common. A quick internet search found no shortage of them at any ...

At 417 rwhp, the LS6 was making good power without suffering from too-big-of-a-cam syndrome, and it was perfectly happy to fire up cold and drive to the Keys if we so desired. That said, it could ...