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4.56 ring and pinion gears?

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Old 07-11-2018, 12:01 PM
WD Ray
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4.56 ring and pinion gears?

Is there anyone with a 4x2 ,auto trans truck running 4.56 gears ?
 
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Old 07-11-2018, 06:29 PM
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what is your goal ? Normal gearing would be maybe 3.55 .... to get to 4.56 is a 30% change..... what that is going to do is at 60- MPH when the motor is running 1700 RPM, it will be running 30% faster or 2250 RPM ...... lot more bottom end torque... mileage and top end may be sacrificed.
 
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Old 07-11-2018, 07:45 PM
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Yes sir. Thank you for taking the time to reply to my thread. I orig. had a 3.55 gear in my truck,and them swapped out for 4.10. The performance was somewhat different,but now I'm think about going 4.56. Accoording to an RPM calculator it indicates that while at a steady 70 mph with a 4.56 gear my RPMs would be 2503 rpms. Is 2500 RPMS to high for 70mph ?
 
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Old 07-11-2018, 09:48 PM
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What engine?
 
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Old 07-12-2018, 04:20 AM
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2000 F150 auto trans 8.8 with a 4.6 V8
 
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Old 07-12-2018, 06:46 AM
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Originally Posted by WD Ray View Post
2000 F150 auto trans 8.8 with a 4.6 V8
4.56 would be good then, that 4.6 needs all the help it can get.
 
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