[tliltocatl]

Raptor has much higher chamber pressure (35 MPa vs 7 MPa of F1) and hence higher Isp (380 vs 304 in vacuum).

[jcims]

35MPa is ~5000psi for anyone wondering lol.

[tliltocatl]

And I took the effort to convert it to metric… Seriously, NASA uses the metric system and so should you.