How much horse power and torque would a 30 over 454 with 336781 gm oval port open chamber heads crane energizer 282 cam edelbrok torker 2 manifold trw 225 dome pistons 700 holley dp carb make?

It's impossible to give an exact horsepower and torque figure for that engine combination without dyno testing. Too many variables influence the final numbers. Even with identical components, variations in machining, assembly, and even fuel quality can affect the outcome.

However, we can make a reasonable *estimate*. This 30-over 454 (meaning a 484 cubic inch engine) with those parts is a fairly healthy big-block Chevy build. The components suggest a focus on torque, especially with the oval port heads, the relatively mild Crane Energizer 282 camshaft, and the Torker II intake.

A reasonable *guess*, assuming proper tuning and good assembly, would be in the range of 500-550 horsepower and 550-600 lb-ft of torque.

But keep in mind:

* This is just an educated guess. The actual numbers could be higher or lower depending on the factors mentioned above.

* Tuning is critical. A poorly tuned engine will produce significantly less power than a well-tuned one.

* Internal engine condition (ring seal, etc.) impacts power output.

* Exhaust system design significantly affects horsepower and torque curves.

To get accurate numbers, the engine needs to be professionally dyno-tested. Only then will you have the real horsepower and torque figures.