2004 F150 4.6l rpm limited to 2000 in drive with brake applied
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Junior Member
Joined: Jun 2020
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From: Texas
2004 F150 4.6l rpm limited to 2000 in drive with brake applied
Preface: I had no idea where to put this thread so I’m sorry if I chose wrong but I figure it has something to do with tire size/brakes
I drive a 2004 f150 4.6l XLT Supercab with the 3.55LS. It has been a hand me down truck from my grandpa to my dad and to me. I haven’t been impressed with the 4.6l for the past couple of years that I have driven it but it was an improvement from my 97 4.2l.
Burnouts in a truck are a waste of fuel and expensive tires (running 285/70/R17 k02s.)
That being said I’ve read a lot about people on here being able to do burnouts with their 04-08 4.6s.
It’s not doing burnouts that I’m after, it’s being ABLE to do it.
The truck absolutely will not do it by flooring it, unless it’s wet. The truck also won’t do it by stepping on the brake and getting the RPMs up and slowly letting off the brake seemingly because the RPMs will never get above 2000 with the brake applied.
I thought that it may be a rev limiter in the computer so I tried using an SCT X4 to alter it but had no luck.
Today I received my Detroit Trutrac diff carrier and my 4.10 gears so I will report back whenever I find time to do the swap, but if anyone else has the same problem or knows why the RPMs won’t go above 2000 please let me know.
I drive a 2004 f150 4.6l XLT Supercab with the 3.55LS. It has been a hand me down truck from my grandpa to my dad and to me. I haven’t been impressed with the 4.6l for the past couple of years that I have driven it but it was an improvement from my 97 4.2l.
Burnouts in a truck are a waste of fuel and expensive tires (running 285/70/R17 k02s.)
That being said I’ve read a lot about people on here being able to do burnouts with their 04-08 4.6s.
It’s not doing burnouts that I’m after, it’s being ABLE to do it.
The truck absolutely will not do it by flooring it, unless it’s wet. The truck also won’t do it by stepping on the brake and getting the RPMs up and slowly letting off the brake seemingly because the RPMs will never get above 2000 with the brake applied.
I thought that it may be a rev limiter in the computer so I tried using an SCT X4 to alter it but had no luck.
Today I received my Detroit Trutrac diff carrier and my 4.10 gears so I will report back whenever I find time to do the swap, but if anyone else has the same problem or knows why the RPMs won’t go above 2000 please let me know.
Thread Starter
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Junior Member
Joined: Jun 2020
Posts: 2
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From: Texas
2000 seems reasonable for stall speed from what I was reading, but I wasn’t able to find a lot of good data or information on it.
Senior Member
Joined: May 2015
Posts: 362
Likes: 11
From: San Antonio, Tx
STALL speed a little low
According to the Factory Service Manual for your likely transmission, your stall speed is slightly low, but not bad. Most likely a slight degredation of 'TORQUE' from normal wear. I thought the Stall Speed was 2500, but mine is a 5.4L so I looked it up. Seems like it is likely the same transmission - but the different engines produce different low end torque. Haven't tried mine (I'm afraid to with 254k miles on the original tranny). Maybe you'll forgive me. haha
