Intake Manifold Recommendation

rumblefish360 said

Sorry, but don't the Magnum engines all use the SAME HEAD AND VALVES?!

Click to expand...

NO. 5.2 has 1.92" intake and 5.9 has 1.86" intake

5.2 has .439" lift roller and 5.9 has .397" lift roller

Thats why both engines basically make 245 hp. Just installing the 5.2 heads and cam in 5.9(pcm too if injected) will push 5.9 much closer to 300 range.