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Old Oct 5, 2009 | 01:11 AM
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Rev limitor

I have a 91 injected 302, and was wondering how I could bump the the rev limitor up to 6000 rpm or even just take it out. Guess I picked a tad to low of a gear ratio for my drivetrain combo and some times find myself in a position where I have a more power to use but not enough to grab another gear or maybe cant afford trying. What can I do? Buy some 39.5's to help the gear ratio! haha not in the budget at the moment as Id need to upgrade my front end first. Seriously though, is there anything I can do? I dont know much about the computer or anything so I dont even know if its possible
 
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Old Oct 5, 2009 | 04:25 AM
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Take it to a tuner or have a chip made , thats the only way i know how to do it . But on a stock motor i don't know if you want to rev it to much over the stock limiter .... Lew
 
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Old Oct 5, 2009 | 08:12 AM
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A stock motor makes peak HP at around 4500rpm so reving it more is just making noise. I suspect you are not hitting a rev limiter just floating the valves if the motor looses power up there now.
 
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Old Oct 5, 2009 | 12:30 PM
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Im not losing power, just running out of gear. I know the motors power is dropping up there in the rpms, I wasn't asking if id get more power at 6 grand then 5.
 
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Old Oct 5, 2009 | 01:42 PM
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Well as far as I know the stock rev limiter is around 6000rpm anyway, so if your motor is shutting down before that it's not the electronics doing it.
 
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Old Oct 5, 2009 | 02:58 PM
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It will only get to 54 or 5500, Im pretty sure that's the limitor
 
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Old Oct 5, 2009 | 03:47 PM
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what gears are you running.

on our trucks 5500 is the limit.
 
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Old Oct 6, 2009 | 03:43 AM
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4.88, 4.56 would have been a better combo but I didn't wanna be wishing I went lower when I had the chance. I wouldnt trade my first gear/low range ratio for anything
 
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Old Oct 6, 2009 | 10:13 AM
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weird your hitting that rev limitor so much are you strictly mud running?

i have that very ratio and 35's and love the combo but i have an auto also. when you drive your truck on the street you dont start in 1st gear do you?
 
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Old Oct 6, 2009 | 02:35 PM
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Mud is where I have the problem and sometimes climbing hills. On the street I do start in second, If I had the M5OD still I'd probly start in first.
 
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Old Oct 8, 2009 | 05:26 PM
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get a programmable ignition modules
 
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Old Oct 8, 2009 | 05:36 PM
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Is it safe to be pushing these truck engines to 5500-6000RPM anyways with stock internals? I know they are losing power up there, but I'm just curious. I know the 302 is a revver with the 3" stroke, but I'm just curious.
 
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Old Oct 8, 2009 | 05:48 PM
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welll i know 5500-5750 is no problem beacuse i would push that all the time in first gear through town beacuse i like waking people up. not sure about 6000
 
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Old Oct 9, 2009 | 12:10 PM
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if it was a roller cam setup then yes. i wouldnt with a flat tappet cam.
 
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Old Oct 9, 2009 | 12:31 PM
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man my truck 94 with a 302 shifts around 6000rpm's from 1rst gear to second, I kinda thought there was something wrong with it.
 
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