dave91gt
Well-known member
- Thread starter
- #1
So my new 21 F150 has 300 miles and I’ve been taking it pretty easy for break in. Yesterday I decided to see just how strong it was and wound out 2nd. To my surprise, the tach kept climbing. And climbing until I saw 6.8, the tach turned red, and it shifted. It pulls STRONG all the way through. Just watched a video where a guy did a cold air intake and Dyno tune on his 21 and he said 6200 was his rev limit. So- is 6800 normal for this gen? My 2012 shifted way earlier.
I’m not complaining. Just surprised. I must say- I’m glad I got this engine. The 3.73’s just make it perfect.
I’m not complaining. Just surprised. I must say- I’m glad I got this engine. The 3.73’s just make it perfect.
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