WTB: Dana 44 4.10 gear set
#1
Le Mans Master
Thread Starter
WTB: Dana 44 4.10 gear set
Currently have 3.73's in ZR-1. Due to using 19" wheels, I am looking to bump rear axle ratio. Buy 4.10's or swap differential. Prefer the Dana OEM or Viper gear set.
#2
Le Mans Master
Member Since: Oct 2004
Location: South-central Missouri
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Check w/ Suburban Driveline yet? 630-941-7101
They've done some good work for me - new U-joints, balancing the drive shaft, etc.
747 W North Ave, Villa Park (SW corner of North Ave and Westwood-Lincoln Ave. (about 3 blocks from Marc's shop).
Good luck!
Paul.
Last edited by Paul Workman; 07-03-2016 at 12:09 PM.
#3
Le Mans Master
Thread Starter
Hi, Dom!
Check w/ Suburban Driveline yet? 630-941-7101
They've done some good work for me - new U-joints, balancing the drive shaft, etc.
747 W North Ave, Villa Park (SW corner of North Ave and Westwood-Lincoln Ave. (about 3 blocks from Marc's shop).
Good luck!
Paul.
Check w/ Suburban Driveline yet? 630-941-7101
They've done some good work for me - new U-joints, balancing the drive shaft, etc.
747 W North Ave, Villa Park (SW corner of North Ave and Westwood-Lincoln Ave. (about 3 blocks from Marc's shop).
Good luck!
Paul.
#4
#6
Le Mans Master
Thread Starter
Thanks Jeff. The problem is I keep getting conflicting advice on whether to go from 3.73 to 4.10. I was recently told I would feel little to no difference
that I am also using taller 345/19 tires.
that I am also using taller 345/19 tires.
#7
Taller tires I'd think "reinforces" the thoughts that you need more gear.
#8
Race Director
so unless you are changing tires/wheels I would think you would notice the difference..
#9
Dom,
I'm running the same 345/19 tires as yours with 4.10 ratio gearing and really like the combination. With the taller 345/19 tire its like running 3.90 gears with 315/17 stock size tires.
I'm running the same 345/19 tires as yours with 4.10 ratio gearing and really like the combination. With the taller 345/19 tire its like running 3.90 gears with 315/17 stock size tires.
#10
Would a 4.30 build and the 345/19 maybe be a practical thought for maybe some? I didn't do any math with them and I may but the thought occurred to me. What do you actually consider the "rolling/loaded" circumference/diameter of the 345/19? I've never looked at the advertised or actually any of the specs.
#11
Le Mans Master
Thread Starter
Would a 4.30 build and the 345/19 maybe be a practical thought for maybe some? I didn't do any math with them and I may but the thought occurred to me. What do you actually consider the "rolling/loaded" circumference/diameter of the 345/19? I've never looked at the advertised or actually any of the specs.
Just don't think I want to go that high. But for comparison, the stock
GY Eagles are 25.7" dia. while my Michelin PSS are 27.2". I register about a 4mph@70mph difference between the ODO and my GPS measured speed.
The trans has a stock speedo gear in it. The 3.73s brought the delta a bit closer but GPS still read higher than speedo. So the wheel/tire combo "acts" like a taller gear than stock setup and still does.
Phil,
The 3.90 was supposed to be THE gear for the ZRs.
#12
Dave,
Just don't think I want to go that high. But for comparison, the stock
GY Eagles are 25.7" dia. while my Michelin PSS are 27.2". I register about a 4mph@70mph difference between the ODO and my GPS measured speed.
The trans has a stock speedo gear in it. The 3.73s brought the delta a bit closer but GPS still read higher than speedo. So the wheel/tire combo "acts" like a taller gear than stock setup and still does.
Phil,
The 3.90 was supposed to be THE gear for the ZRs.
Just don't think I want to go that high. But for comparison, the stock
GY Eagles are 25.7" dia. while my Michelin PSS are 27.2". I register about a 4mph@70mph difference between the ODO and my GPS measured speed.
The trans has a stock speedo gear in it. The 3.73s brought the delta a bit closer but GPS still read higher than speedo. So the wheel/tire combo "acts" like a taller gear than stock setup and still does.
Phil,
The 3.90 was supposed to be THE gear for the ZRs.
#13
Le Mans Master
Thread Starter
This ain't about odometer correction, the gear and tire are performance related, it's they either complement one another or "they don't" - odometer correction is a completely different issue and you can't use "guesstimates" to evaluate. It's all about the "desired final drive"!
Phil,
What rpm are u running at when say cruising at 70mph?
#14
I recall around 1900 rpm in 6th gear but I'll confirm for both 5th and 6th gear next time I have it out.
I'm using 13/41 speedo gears which are spot on at 70 mph according to GPS.
I'm using 13/41 speedo gears which are spot on at 70 mph according to GPS.