Nissan 370Z Forum - View Single Post - VHR + FD Gear Ratio upgrades

KLRCADI · 04-19-2009, 03:11 PM

In the Z33 world, the combo of the HR motors and upgraded Final drive gears in the R200 diff seems to be pretty potent combo, and really transforms the acceleration in the car. Especially in Modded NA cars. The 370 has a 3.69:1 ratio ring set. I am think 4:08's would drop another 3-4 tenths off the 1/4 mile times and really help the VHR get into the power range faster. I would hazard a guess that a fully bolted on 370z, with a 8000 RPM tune making 320-340 whp and a 4:08 gear would be a mid 12's car all day long. I think this would be the first mod I would do. The diff's are exactly the same, so anyone looking to do this can get everything you need to right now. I think the only question is the same we have about flywheels. What will happen to SRM? Thoughts?

04-19-2009, 03:11 PM	#1 (permalink)
KLRCADI Base Member Join Date: Apr 2009 Location: Toronto Posts: 11 Drives: 2005 CTS-V Rep Power: 16	VHR + FD Gear Ratio upgrades - 3.9 and 4.08 In the Z33 world, the combo of the HR motors and upgraded Final drive gears in the R200 diff seems to be pretty potent combo, and really transforms the acceleration in the car. Especially in Modded NA cars. The 370 has a 3.69:1 ratio ring set. I am think 4:08's would drop another 3-4 tenths off the 1/4 mile times and really help the VHR get into the power range faster. I would hazard a guess that a fully bolted on 370z, with a 8000 RPM tune making 320-340 whp and a 4:08 gear would be a mid 12's car all day long. I think this would be the first mod I would do. The diff's are exactly the same, so anyone looking to do this can get everything you need to right now. I think the only question is the same we have about flywheels. What will happen to SRM? Thoughts?