How fast can you go with a Magnum? Who has the quickest setup?

rumblefish360 said

Yes and No.

The bottle neck IMO starts with the intake manifold. Then, the throttle body. I could have it reversed. The computer Chyrsler uses isn't street user friendly. Or, in other words, you have to know a person to reflash it. The injectors have limitations. I do not know where that is. There rated at xx pounds. You have to know where xx pounds will show it's hp ceiling.
I don't know where you want to go with this build.

FWIW, A MP - M1-single plane just hit the classifieds for $275, used, glass beaded. That intake is best used at 4,000 plus RPM for the strip. Otherwise, hughesengines has a RPM with FI abilities due to the cast in FI bosses.

No aftermarket EFI experiance here.

Click to expand...

Good info there. Thanks again!

I'm currently running a Mopar M2 dual plane and a 650 carb so my motor is a clean slate when it comes to fuel injection...but it sounds like a factory system wouldn't be worth the trouble.

I'm going to check out that Hughes Engines piece! That sounds interesting...

I'm just looking to wake up this lazy motor but I don't have a final vision in mind for a power level. I tend to find that a powerful but still balance and well matched set-up to be the most fun. I admire and respect the guys who build for the drags too but that's not my goal.

Assuming I can keep the weight down, a fully braced up, Abody with suspension upgrades, a manual transmission, good tires and 450ish hp V8 might just peg the fun-meter for me.

Again, the info is hugely appreciated.