RPM'S
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Joined: Oct 2002
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From: Dededo, Guam
RPM'S
i have never heard about a rev limiter in these trucks. if there is i have never hit it. highest i have ever had my truck is 4200. didn't want to take it any higher than that, but man will that motor sing.
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Joined: Jul 2001
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RPM'S
I've never run into a rev limiter (been over 5k once and didn't like the sounds) but i've hit the speed limiter (~110mph). For a stock motor you're not going to be making (much)power over 5k, so i'd stay below that. When i'm racing my bud around shifting at 3800 or so seems to be about optimum ('89 F150 2wd M5OD). Every once in a while i'll toodle around a bit at 4500 or so just to clean the carbon out 
-=Whittey=-
-=Whittey=-
Posting Guru
Joined: Dec 2001
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From: Southeast FLA
RPM'S
Wow... my 1993 with a M5OD doesn't seem to make much power when I get up to 2800 RPM, so I rarely take it to 3000.
I'd be surprised if mine would act like it was worth leaving in gear up to 3800 for a race.
Best,
I'd be surprised if mine would act like it was worth leaving in gear up to 3800 for a race.
Best,
Hotshot
Joined: Oct 2002
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From: The Big, Oregon
RPM'S
Yours should have a limiter at around 5500-6000rpm. I don't know what good it is, by 6000 these things are ready to come apart. I have shifted mine at 5500 before, and it was still pulling. I usually shifted at around 5000, and it pulls very nicely from 1200 to there. But, mine is built for that. I would keep any stock 300 on the low side of 5000.
Jared
Jared
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Joined: Sep 2002
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From: kansas
RPM'S
Would the rev limiter use spark control or fuel cut-off? Would make a huge difference if running Supercharger/turbo/nitrous. A local guy with a 96-98 camaro with centrifugal supercharger broke the ring lands off his pistons and shattered the rings when he ran up against the stock rev limiter because it cut off fuel. Dead lean in an instant and he didn't know it. His wife even held it against the rev limiter once while learning to shift as quick as the motor could wrap-up.
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Posting Guru
Joined: Dec 2001
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From: Southeast FLA
RPM'S
Woth a rev limiter that high it raises the question in my mind if our computers aren't just the very same ones the V-8's use - but Ford hasn't told anyone?
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New User
Joined: Oct 2002
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From: Nanticoke USA
RPM'S
I got a 95 f-150 with the 300 with msd an other stuff. When i burn out at school or turf up its front lot, my truck will only hit 4200 in second gear. I do have to agree that any more than 3200 on mine feels like your at a steady pace and no acceleration. The best is between 1800 and 2200 when that little power surge kicks in, you can really slip some tires then in 2nd.
Postmaster
Joined: Mar 2002
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From: Coal Region
RPM'S
well im guessing i had mine wound out to around 3800 with my auto in 1st once when i was in the mud. but it sounded angry as hell and but seemed that it liked it...but they arent made to be wound out past 3500...hard to tell with mine tho, no tach...
Post Fiend
Joined: Jan 2000
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From: Metro Detroit (Redford)
RPM'S
>...but they arent
>made to be wound out past 3500...hard to tell with mine tho,
>no tach...
Someone on this site once posted that their auto tranny 300 I6 shifted flat out at 3600 rpm. That tells me the redline has to be well above 3600.
After reading this thread yesterday I floored mine in second (not an unusual occurance with me
)up to 3800--it sounded so sweet. Ahhhhhh, just love to push the pedal .
INLINE SIX POWER!
'95 F150 XL
300 Cubic Inches of Low RPM Truck Torque! And twin-I-beams too!
"Drive a stick young man! There'll be time for automatics when you're old and unable."
>made to be wound out past 3500...hard to tell with mine tho,
>no tach...
Someone on this site once posted that their auto tranny 300 I6 shifted flat out at 3600 rpm. That tells me the redline has to be well above 3600.
After reading this thread yesterday I floored mine in second (not an unusual occurance with me
)up to 3800--it sounded so sweet. Ahhhhhh, just love to push the pedal . INLINE SIX POWER!
'95 F150 XL300 Cubic Inches of Low RPM Truck Torque! And twin-I-beams too!
"Drive a stick young man! There'll be time for automatics when you're old and unable."
Posting Guru
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From: Copley, OH
RPM'S
That posting about the WOT upshift was mine. "Redline" is a subjective term. On a race engine it represents the RPM which you cannot exceed without doing immediate and irreperable harm. On a street engine it should be a somewhat lower number since you presumably want the engine to last more than 20 hours between rebuilds.
A stock 300 won't come apart at 6000, but it may not live very long if you push it that far very often. If you really need a "redline" number try 5500 for argument's sake. The question is: WHY BOTHER? Depending on year the torque peak is 2000 RPM +/- 200 and the HP peak is 3500 +/- 200. Rev it much beyond that and all you're making is noise. You're actually losing performance vs. shifting to the next gear. The computer shifts the E4OD at 3600, with an M5OD you probably have no reason to go above 4000.
A stock 300 won't come apart at 6000, but it may not live very long if you push it that far very often. If you really need a "redline" number try 5500 for argument's sake. The question is: WHY BOTHER? Depending on year the torque peak is 2000 RPM +/- 200 and the HP peak is 3500 +/- 200. Rev it much beyond that and all you're making is noise. You're actually losing performance vs. shifting to the next gear. The computer shifts the E4OD at 3600, with an M5OD you probably have no reason to go above 4000.
Post Fiend
Joined: Jan 2000
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From: Metro Detroit (Redford)
RPM'S
I agree 100% with StrangeRanger. I recall Pitt Electric used to sell 300 I6s for generators and their specs had a maximum sustained RPM which I believe was 3400, not to say you can't exceed that but you would not want to haul a trailer from Detroit to St. Louis at 4000 rpm all the way--that I think would beat the engine to pieces.
For the record I am on my third 300 and have never gone over 4000 and if you check my gallery you will see that my tach dosen't go over 4000 either ;-) .
My motorhome's 460 V8 with auto tranny shifts out of first at 4100 flat out and my wifes auto 3.0L Aerostar shifts out of first flat out at 5700 (wow, that's a real screamer. I better not do that with her in the van ).
For the record I am on my third 300 and have never gone over 4000 and if you check my gallery you will see that my tach dosen't go over 4000 either ;-) .
My motorhome's 460 V8 with auto tranny shifts out of first at 4100 flat out and my wifes auto 3.0L Aerostar shifts out of first flat out at 5700 (wow, that's a real screamer. I better not do that with her in the van
).
Thread Starter
|
Senior User
Joined: Oct 2002
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From: Connecticut
RPM'S
this is all great info but im curious to know what can my truck get with out destorying my truck im not talking about generators or anything like that... im just saying... i-6 300 m5od
Senior User
Joined: Jul 2001
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RPM'S
What we're saying is this:
If you are talking maximum RPM that the engine can handle bone stock without comming apart on you, look twards 5500 or 6000rpm. If you're talking about 'where should I not go past with a stock or mostly stock engine' then you should probably end up shifting at ~3800rpm.
-=Whittey=-
If you are talking maximum RPM that the engine can handle bone stock without comming apart on you, look twards 5500 or 6000rpm. If you're talking about 'where should I not go past with a stock or mostly stock engine' then you should probably end up shifting at ~3800rpm.
-=Whittey=-