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Forum: Engines and Drivetrain

07-19-2019, 07:42 AM

Replies: 20

diminished power

Views: 3,490

Posted By carringb

Ray brings up a good point about the transmission...

Ray brings up a good point about the transmission selector. A lot of people don't realize that the numbers on the shifter are fully manual. On other other words, if you pull the shifter into "3", it...

Forum: Engines and Drivetrain

07-19-2019, 05:21 AM

Replies: 20

diminished power

Views: 3,490

Posted By carringb

To maintain 4.10 equivalency with 35" tires, you...

To maintain 4.10 equivalency with 35" tires, you would need 4.88 gears.

On that note, have you ever checked your speedometer now? I'm wondering if it was ever programmed for the taller tires with...

Forum: Engines and Drivetrain

07-18-2019, 09:01 PM

Replies: 20

diminished power

Views: 3,490

Posted By carringb

In your case, it's the gears. Your effective...

In your case, it's the gears.

Your effective gear ratio is about the same as 3.55 gears with stock tires. Ford didn't offer the V10 with 3.55 gears because its puts operating RPMs too low to make...

Forum: Engines and Drivetrain

07-18-2019, 09:58 AM

Replies: 20

diminished power

Views: 3,490

Posted By carringb

OK I didn't realize you had a V10. It can be...

OK I didn't realize you had a V10. It can be expected from the 5.4L, but the V10 should have power to spare even at 10,000 ft unless you're towing a heavy trailer. What's your loaded weight and gear...

Forum: Engines and Drivetrain

07-18-2019, 07:14 AM

Replies: 20

diminished power

Views: 3,490

Posted By carringb

Why is it disconcerting? It's simply physics. All...

Why is it disconcerting? It's simply physics. All natural-aspirated motor will do this. Your PCM is already adjusting the mix so it won't run rich like a old carb'd motor.

The 5-star tune will add...

Forum: Engines and Drivetrain

07-16-2019, 03:50 PM

Replies: 20

diminished power

Views: 3,490

Posted By carringb

Non-turbo motors lose 3% per 1,000 feet. So when...

Non-turbo motors lose 3% per 1,000 feet. So when you were in the Sierras, you were already down 25% just from elevation. Then add in grades that are steeper than they look.

So... your experience...

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