Magnum VS Hemi

DionR said
I wish Mopar had put together a car version of the Magnum. Something that wasnt truck oriented and didnt need gobs of low end torque. Something that would pull to 5500-6000 RPM, rather than run out of breath at 4800 like they do with the stock EFI intake.

I bet 345 horsepower would have been easy. I know its not hugely different than what the Dakota R/T guys build, and I know they are making well over that.

In their apps, it was unnecessary. The vast majority of trucks did not have enough gear to have more cam- that's why Ford, Chevy, and the Hemi trucks didn't make them look horrendous stock. The extra 70-100hp most other truck motors had would never see usage even in a full 1/4 mile.

magnummopar said
The stock intake is not to blame, its the ignition. Replace the champion plugs gapped at .035 and they will pull well past 4500. Also, you cant expect an engine with a .439 lift 114 deg center cam to pull past 5000 but if you swap out the cam with say .550 on 112 or 110 then it should pull up to 6000. The beer keg manifold has over 16" runners. Remember when John Lingenfelter was building 180 + mph vetts and camaros? His signature manifolds were 15-16" runners. Those might have been GM mills but not one you would want to screw with in a small block Dart. Longer runners make for more than atmospheric pressure at the port ie a small supercharger. The Hughes RPM airgap only does about 1500 rpm higher than the stock kegger and not as much down low. Dont know about you, but I dont typically take my V8 cars in the 6K RPM range, more power and torque at say 4800-5200. On the street, torque is king. My Audi turbo is another story though.

All depends on what kind of power you want to make, and how you're going to make it. Stroker doesn't need to turn as hard to return better power numbers- especially with boost.