My Challenger’s motor, at precisely 4,000 RPM, goes from sounding good to sounding heavenly. Unfortunately, that’s where the Park/Neutral rev limiter is. So, to make some really good noises without breaking the 0 mph speed limit,
1. Is it safe to raise my rev limiter in park/neutral from 4,000 to 5,800? (how to do so is next) I know, throwing a rod, but the 5.7 HEMI is a very reliable motor, probably as much as the small-block Chevy. And the SBCs can rev in park up to 6,000 all day...(or can they?) Just keep in mind that I would never simply hammer on it all day. Maybe once a month I’d take it on up there.
2. If the answer to the previous question is yes, is it possible to do so without spending $600 on a tuner? Like, a dealer reprograms the ECU? I couldn’t care less about air/fuel ratios or increased power.
I have a possible solution: Not the most convenient, but I could raise up the back wheels on a jack, put it in drive, and let ‘er rip. This might be dangerous, since the car could rock itself off the jack while revving and crash down, damaging who knows what.
EDIT: I look back on this and it looks stupid now.