E58 400 plus HP Dart sport build

4.7Light said

See engine labs dyno build 360, I do plan to do some head work and I'm bumping compression up as well 10.2 to 1 should be right on the edge of 400 with better compression which they left bottom end stock pistons. Modifying And Testing A Dodge 360-Cube LA Small-Block On The Dyno

Click to expand...

I have no dog in this hunt. But I will mention the westech dyno seems to be a little on the happy side compared to others.

For instance a stock rebuilt high compression 340 with headers and the comp 268 cam supposedly made 400 hp as well.

That said what you are putting together sounds like a great low buck street combo no matter what the actual horse power level winds up at.