I like my LT1...
(drool pics below)
The LS1's main advantage, and the real reason it has so much more power from the factory comes from 3 things...
1. Insanely better heads... The flow numbers between LT1 castings and stock LS1 heads are not even close...
2. The intake design helps a decent bit as well, even though the LT1 intake does flow quite good...
3. The LS1's have a more header styled exhaust manifold...
The fact that the LS1's have a 6 bolt main is irrelevant really... A 4 bolt LT1 made of iron is just as strong or strong than a 6 bolt aluminum main... Perhaps they use 6 because of the fact that aluminum is softer, has anyone considered that...
The cams are also a bit more agressive...
As for the valvetrain, they are actually quite similar...
just my
-Garrett
