I have a 2010 Ford class c e450. anyone know what the engine rpm red line is? there is no mark on the tach. thanx

Since you have an automatic transmission controlled by the engine computer, it doesn't matter too much; the computer won't let you exceed the redline in any remotely reasonable condition by forcing shifts and/or cutting out the fuel. I guess if you were backing down a steep hill at high speeds you might be able to exceed the red line...but that's about it, and I can't even begin to imagine trying that trick in a motorhome.I think it's somewhere in the vicinity of 6K rpm, give or take a bit, but could be wrong. The engine does just fine being run at high speeds all day, even though it sounds like it's liable to dash itself to pieces, and generally speaking likes to rev quite high for a truck engine.Frankly, the tachometer is rather a pointless gauge in this case IMHO. You can tell everything you need to know about the engine speed just by listening.

If you just hold it to the floor you will find out. We had a 5.4 which is the same modular engine with a couple less pistons and if you floor it the computer would cut it off at about 5700. It was hard to tell the exact number because it would bounce when it cut off and back on. It would do that with no ill effects.I haven't done that with the V10 yet in park but in 1st gear it will stay at 5500 without cutting out so I know it's higher then that.

Maybe some help for you. If you click on the link you can find the horsepower/torque curves for the Ford V10 (including revised curves for Hypertech power adders). Max torque is just under 4,000rpms and max horsepower is just over 5,000rpm.Hypertech V10 Horsepower CurveEDIT: I am NOT affiliated nor selling Hypertech products, just using their chart for reference.

There is none. Not in the common terms you're trying to use anyway. As has been stated, the computer will dictate what the red line is. If you floor it the computer is making the call and not you. Floor away! :B

I think the term 'red line' is really a dinosaur from the past. Your engine will have a rev limiter to prevent any damage.

v10 red line? | Good Sam Community

DrewE
Explorer II
Jul 14, 2015
Since you have an automatic transmission controlled by the engine computer, it doesn't matter too much; the computer won't let you exceed the redline in any remotely reasonable condition by forcing shifts and/or cutting out the fuel. I guess if you were backing down a steep hill at high speeds you might be able to exceed the red line...but that's about it, and I can't even begin to imagine trying that trick in a motorhome.

I think it's somewhere in the vicinity of 6K rpm, give or take a bit, but could be wrong. The engine does just fine being run at high speeds all day, even though it sounds like it's liable to dash itself to pieces, and generally speaking likes to rev quite high for a truck engine.

Frankly, the tachometer is rather a pointless gauge in this case IMHO. You can tell everything you need to know about the engine speed just by listening.

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v10 red line?

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