[Will]

Originally Posted by pastry_chef

Looking at similar to 400 engine size, this LS is at 580 HP. I think the Pontiac would fall 60 to 70 HP short on its best day. No way will 224 @ .050 cut it.

https://www.texas-speed.com/p-3573-t...y-package.aspx

To what do you attribute the extra power?

Trying to understand how two engines of similar displacement can make such different power levels.

I know heads/intake are where the power's at, as stated before. Do the LS heads really work that much better? How much does the intake contribute to this?