I'm curious as to this too, what all have you done to your truck to turn those RPM's Chris? I bumped my timing today to 18* and it runs alot better (my timing had slipped down to 3mm of lift) and now I really can't wait to get the new head and cam in and bump up the RPM's some more

 

I "can" turn 5500...that's what my pump is governed at. I haven't done anything else to it, not even valve springs, so I don't spin it under power over 4K. The only time Ive taken it past that is when I got the truck running after the pump swap, I just had to hear how it sounded...not too mention I had way too much timing in it and it wouldn't hardly run under 2K, so I had to

It sounded GOOD up there

Hopefully, this winter I can build a new engine, and make it handle those kinds of R's!

Chris

 

Oh I agree, thats why I would think some form of Automatic rev limiting would be a godsend.

Just thinking out aloud, if you normally turned say 5500 RPM max on a pull or run, you could put a 5700 chip in and then if an issue happened, it would pull the Normally Open solenoid open shut, removing fuel to the engine in a matter of milliseconds.

I'm sure you might have to use the rev limiter to pull in a relay and slow it down a little, but I couldn't see it taking more than 200 or so Ms to kill the fuel to the P-Pump