what do 4.10's do???

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01-10-2006, 03:31 AM

#11

Rezalien

2nd Gear Member

Join Date: Jan 2006

Location:

Posts: 226

RE: what do 4.10's do???

Ricva05, i'm assuming a tune (XCal II) will correct the speedo if I change to 4:10, correct? Any pointers on that?

Also, know it's probably over-asked, but did the 4:10's significantly lower your top speed or affect your rpm's? I routinely cruise at 80-90 mph...if the 4:10's are too extreme, I might opt for 3:73, etc...

I would appreciate anyones opinion on this

01-10-2006, 08:15 AM

#12

RICVA05

3rd Gear Member

Join Date: Apr 2005

Location: VA

Posts: 991

RE: what do 4.10's do???

Quote:

ORIGINAL: Rezalien

Ricva05, i'm assuming a tune (XCal II) will correct the speedo if I change to 4:10, correct? Any pointers on that?

Also, know it's probably over-asked, but did the 4:10's significantly lower your top speed or affect your rpm's? I routinely cruise at 80-90 mph...if the 4:10's are too extreme, I might opt for 3:73, etc...

I would appreciate anyones opinion on this

Yes the X-Cal 2 will fix the speedo. problem . The best way I can describe what it is like riding at higher speeds is like taking the overdrive off it runs a couple of hundred RPMS higher and I feel like I lost nothing switching to 4:10 gears only gains in accelerations.

01-10-2006, 04:02 PM

#13

Ebein

1st Gear Member

Join Date: Apr 2005

Location:

Posts: 86

RE: what do 4.10's do???

05-06 Manual Mustang GT ( stock Wheel Size )

Code:

4.30 Rear End - Speed in Gear @ RPM					
 RPM	2000	3000	4000	5000	6000
 1st	10.79	16.18	21.58	26.97	32.37
 2cd	18.23	27.35	36.47	45.58	54.70
 3rd	27.63	41.44	55.25	69.07	82.88
 4th	36.47	54.70	72.94	91.17	109.40
 5th	53.63	80.44	107.26	134.07	160.89
 
 4.10 Rear End - Speed in Gear @ RPM					
 RPM	2000	3000	4000	5000	6000
 1st	11.32	16.97	22.63	28.29	33.95
 2cd	19.12	28.68	38.25	47.81	57.37
 3rd	28.97	43.46	57.95	72.44	86.92
 4th	38.25	57.37	76.49	95.62	114.74
 5th	56.25	84.37	112.49	140.61	168.74
 
 3.90 Rear End - Speed in Gear @ RPM					
 RPM	2000	3000	4000	5000	6000
 1st	11.90	17.84	23.79	29.74	35.69
 2cd	20.10	30.16	40.21	50.26	60.31
 3rd	30.46	45.69	60.92	76.15	91.38
 4th	40.21	60.31	80.42	100.52	120.62
 5th	59.13	88.69	118.26	147.82	177.39
 
 3.73 Rear End - Speed in Gear @ RPM					
 RPM	2000	3000	4000	5000	6000
 1st	12.44	18.66	24.88	31.10	37.31
 2cd	21.02	31.53	42.04	52.55	63.06
 3rd	31.85	47.77	63.70	79.62	95.55
 4th	42.04	63.06	84.08	105.10	126.12
 5th	61.82	92.74	123.65	154.56	185.47
 
 
 3.55 Rear End ( Stock ) - Speed in Gear @ RPM					
 RPM	2000	3000	4000	5000	6000
 1st	13.07	19.60	26.14	32.67	39.21
 2cd	22.09	33.13	44.17	55.22	66.26
 3rd	33.46	50.20	66.93	83.66	100.39
 4th	44.17	66.26	88.34	110.43	132.52
 5th	64.96	97.44	129.92	162.40	194.88

( dont account for wind resistance )