What's your MAX RPM? - Diesel Forum

DZLJIM · 03-13-2006, 08:54 AM

I'd like to hear from any OBS guys out there on what the max RPM is that you see.
Thanks.

--Edited to eliminate the word "Performance" as I'd like to hear from everyone.--

BIGBEAN · 03-13-2006, 09:06 AM

5800 [img]/ubbthreads/images/graemlins/eek.gif[/img]

I probably dont count though lol.

mattymx · 03-13-2006, 10:04 AM

3500ish....

ryanPSD · 03-13-2006, 10:13 AM

I think I've seen 3600.

kam1970 · 03-13-2006, 10:34 AM

If I remember right they are factory governed at 3450 rpm.

1997PSD4ME · 03-13-2006, 10:43 AM

[ QUOTE ]
If I remember right they are factory governed at 3450 rpm.

[/ QUOTE ]

mine cuts out there or somewhere close also.

Vengeance · 03-13-2006, 11:08 AM

[ QUOTE ]
If I remember right they are factory governed at 3450 rpm.

[/ QUOTE ]

All depends on whether or not a chip is on the truck, and if it is, what the tuner has the rev limiter set at.

WyoCowboy · 03-13-2006, 12:19 PM

With the hypermax program. I saw 4000... Don't recomend it I heard they like to bend pushrods above 3600

Twinned444 · 03-13-2006, 12:32 PM

Maybe y'all should work on shifting the peak power rpm somewhere other than 2800 before we worry about turning more rpms just for fun [img]/ubbthreads/images/graemlins/laugh.gif[/img].

Just my opinion,

Steve

lukecline · 03-13-2006, 01:12 PM

3850 or thereabouts was my rev limiter, doubt i'll push it any higher than that with new engine either.

Twinned444 · 03-13-2006, 01:20 PM

Makes sense, because at 3850 you've already left your peak power by over 1000rpms [img]/ubbthreads/images/graemlins/shrug.gif[/img].

You should only run the rpms up until the power you'd be making in the next higher gear is equal to, or greater than the power you're making in the current gear. Once that happens.........it's time to shift, running the rpms higher than that is actually making the truck slower.

Now making the actual power itself go higher in rpms........now that's something to really work on. As in making the peak on the dyno run happen somewhere higher than 2800, lol.

Steve

On Edit: I was wondering about this more, and ran across this thread High Rpm Fueling

lukecline · 03-13-2006, 01:37 PM

[ QUOTE ]
Makes sense, because at 3850 you've already left your peak power by over 1000rpms [img]/ubbthreads/images/graemlins/shrug.gif[/img].

You should only run the rpms up until the power you'd be making in the next higher gear is equal to, or greater than the power you're making in the current gear. Once that happens.........it's time to shift, running the rpms higher than that is actually making the truck

[/ QUOTE ]

stage 2 dyno sheet

Looks like my truck fuels up to rev limiter. I dunno what your smoken but looks to me like i was still making good power until defuel/ rev limiter came into play. Truck was at or above 400hp from 2500 rpms til 3650-3700 where it hit defuel (blue line on sheet).

Vengeance · 03-13-2006, 03:37 PM

When did you get a new truck?

catdiesel0631 · 03-13-2006, 06:27 PM

[ QUOTE ]
When did you get a new truck?

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and twins and a K&N filter LOL IPC_dutycycle <--- thats important heehehehehhe

On Edit: to be on topic 3800+/- same boat as luke on dyno sheet with Tony Wildman Tuning.

TimMiller · 03-14-2006, 01:59 AM

around 3800 on mine.