5.2L Hp and torque estimate?

talking gross? 285.... about 15 less than the 360 mag. Compared to the LA 318, the 318 mag has good compression, good flowing heads, lighter rotating assembly, better ring location and roller cam that is a hair better than the 360 mag. Honestly, should run at least like a factory 340 in a Duster.

I think it'll be about the same as the stock EFI 5.2. He's talking about removing EFI. Power down. Putting on a 4 barrel. Power back up. The 340 manifolds are a step up from non Magnum manifolds, but if it had Magnum manifolds, and he goes to the 340, power down.

"Whatever" the stock EFI HP rating is for the 5.2 I think will be real close. I agree with your assessment with the stock 340, but maybe not as much torque, due to the smaller bore. But really who knows? It'll be snappy. Isn't that all that matters?