4r75w drive ratios?

[BigCars4Ever]

I searched but could not find the info. I rember someone posting the drive ratios. I need to know cause at wide open throttle I sometimes hit the rev limiter before I shift out of second. I would like to calculate so I can understand where my shift schedual needs to be and adjust it.
Thanks!

[SergntMac]

1) 2.84
2) 1.55
3) 1-1
4) 0.7-1 (od)

[BigCars4Ever]

Thanks!!!:)

[BigCars4Ever]

Ok here's what I calculated. I have 4.10's and 245 55 18's. The tires turn 704 rev/mile. I assumed no torque converter slip. The rev limiter was set o 6250 RPM's.
At this RPM
1st = 45.74 mph
2nd = 83.81 mph
3rd = 129.92 mph
od = 185.6 mph

At WOT my shift schedule is set to shift at 45 mph and there lies my problem. With the torque converter slip I will hit the rev limiter before I hit the shift point. Now I can make some adjustments.

[LVMarauder]

All seem right to me. havent actually tried the od top speed though.

[GarageMahal]

1) 2.84
2) 1.55
3) 1-1
4) 0.7-1 (od)

Those are what I have for the 2003 model (4r70w) but I think they changed for 2004 (4r75w):
Gear Ratios
I 2.82:1
II 1.50:1
III 1.00:1
IV 0.70:1

http://media.ford.com/products/presskit_display.cfm?vehicle_i d=955&press_section_id=398&make_id=93

jta

Note: My numbers come from a Ford press kit, so who knows if they are correct...

[JACook]

Those are what I have for the 2003 model (4r70w) but I think they changed for 2004 (4r75w):
Gear Ratios
I 2.82:1
II 1.50:1
III 1.00:1
IV 0.70:1

http://media.ford.com/products/presskit_display.cfm?vehicle_i d=955&press_section_id=398&make_id=93

jta

Note: My numbers come from a Ford press kit, so who knows if they are correct...

Nope. Mac got it right. The 4R75W uses the exact same gearset (not to mention other internals) as the 4R70W.
Dunno where the PR flacks got those numbers, but they're wrong.

[glassman99]

With a 3.73 gearset, I was right at 150 MPH @7,000 RPM on the dyno. (In 3rd gear)