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Was wondering approximately how much HP will be lost going from a manual to a built auto. I will dyno the truck again to verify when I'm done. My truck is around the 700rwhp mark.
Expected HP loss
- Thread starter BLWNSRT
- Start date
Horsepower lost through drivetrain is mostly expressed as a percentage of total power, not a specific number. Which automatic are you switching to?
SrtBrad
Michel Productions
My guess would be around 7 - 10% RWHP loss.
Hello there cutey! What have you been up to?
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Sounds like a fun project. Have you ever had your '10 down the track?
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Yes, 3 weeks ago no traction, and last Wednesday castrol and go auto had put on a private race days. And last wednesday my 2nd gear decided to make a high pitch whine followed by a clunk and grind. I had to have the transmission rebuilt when I bought the truck 8years ago and it only had 3000 miles on it had to buy new synchris and the second gear assembly.
SrtBrad
Michel Productions
Hi meathead. Been on a huge repipe job since Feb of this year. Had 1 day off so far. A week away from completion. I start sending you flowers again soon.
ralphie
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i was told
When I got mine dyno'd, I was told around 20% loss..!
When I got mine dyno'd, I was told around 20% loss..!
Quad cab trucks normally dyno about 30hp less than regular cabs so I'd expect to loose at least 20 to the wheel after the swap.
I'm not sure that means what you think it means.
Promise?
Yeah, but how much of that loss can be attributed to torque management, two piece driveshaft, and the relative uncoolness of a QC (compared to a RC)?
NukeGM/Ford
Active Member
I'm not sure that means what you think it means.
Promise?
Yeah, but how much of that loss can be attributed to torque management, two piece driveshaft, and the relative uncoolness of a QC (compared to a RC)?
Lost an Xtra 10% based on coolness alone
That's only 1% less than the 9% that yellow trucks lose over black trucks!
NukeGM/Ford
Active Member
That's only 1% less than the 9% that yellow trucks lose over black trucks!
Oh man, u didn't go there, I know you didn't go there
I actually like the yellow trucks. I just can't let you know that!
NukeGM/Ford
Active Member
So you are gonna let me have the wing for shipping costs. ..........
I'm not separating the wing from the cover and I'm not shipping either of them.
Back on topic, anyone have any real data on the 47RE or 48RE HP requirements?
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