4.36 gears

maizenblue · 12-18-2014, 05:03 PM

alright, i have done some research in my decision of which ratio to go. here is the data ive put together. all of this data is with the manual transmission with sport package tires. hopefully this helps someone else out in the future as well

Stock redlines.
1st- 42mph
2nd-69
3rd-99
4th-126
5th-160
6th-202

3.9 final drive
1st-40
2nd-65
3rd-93
4th-119
5th-152
6th-191

4.08 final drive
1st-38
2nd-62
3rd-89
4th-114
5th-145
6th-183

4.36 final drive
1st-36
2nd-58
3rd-84
4th-107
5th-136
6th-171

if you want to know what rpm you would be at in any gear at any mph with any final drive just let me know and i can figure that out too.

here is the rpm at 70mph which i figure is highway cruising speed for most people

Stock FD- 2591rpm
3.9 FD- 2738 rpm
4.08 FD- 2864 rpm
4.36 FD- 3061 rpm

MJB · 12-18-2014, 06:22 PM

Quote:

Originally Posted by maizenblue

if you want to know what rpm you would be at in any gear at any mph with any final drive just let me know and i can figure that out too.

here is the rpm at 70mph which i figure is highway cruising speed for most people

Stock FD- 2591rpm
3.9 FD- 2738 rpm
4.08 FD- 2864 rpm
4.36 FD- 3061 rpm

I would honestly just go with 4.08. I think that 4.36 is a bit much, unless you plan on making your Z a dedicated track car. I remember when I drove my 350z with 4.08 rear from WA to TX, my RPM's were getting way up there at cruising speed. I think at 75mph to 80mph I was almost at 4k rpm. It was basically like driving in 5th gear the whole way down there.

L33T Z34 · 02-20-2015, 09:12 AM

To fully utilize the 4.36 FD on the strip you're going to need slix, ECU reflash for a rev limiter @ or > 8,000RPM, and a Nismo oil pump. For the week end ST racer/garage queen, these gears are fun as hell and I wouldn't go to anything higher since the VQ don't make any torque. If you daily drive your Z and are slightly concerned w/gas mileage, then you better go for the 4.08 FD.

12-18-2014, 05:03 PM	#1 (permalink)
maizenblue Enthusiast Member Join Date: Sep 2013 Location: Denver Posts: 288 Drives: 2010 370Z Rep Power: 12	alright, i have done some research in my decision of which ratio to go. here is the data ive put together. all of this data is with the manual transmission with sport package tires. hopefully this helps someone else out in the future as well Stock redlines. 1st- 42mph 2nd-69 3rd-99 4th-126 5th-160 6th-202 3.9 final drive 1st-40 2nd-65 3rd-93 4th-119 5th-152 6th-191 4.08 final drive 1st-38 2nd-62 3rd-89 4th-114 5th-145 6th-183 4.36 final drive 1st-36 2nd-58 3rd-84 4th-107 5th-136 6th-171 if you want to know what rpm you would be at in any gear at any mph with any final drive just let me know and i can figure that out too. here is the rpm at 70mph which i figure is highway cruising speed for most people Stock FD- 2591rpm 3.9 FD- 2738 rpm 4.08 FD- 2864 rpm 4.36 FD- 3061 rpm jchammond likes this. Last edited by maizenblue; 12-18-2014 at 05:08 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[WTB] SWAP SOCAL: 4.08 gears for 3.9 or 3.69 Gears	kosstick	Parts for sale (Private Classifieds)	26	09-24-2016 09:35 PM
[FOR SALE] 4.08 Gears	joelio	Parts for sale (Private Classifieds)	9	05-22-2013 12:07 PM
[FOR SALE] 4.08 gears	Skorch	Parts for sale (Private Classifieds)	27	02-22-2013 10:15 AM
4.08 gears	adam	Engine & Drivetrain	7	02-04-2013 02:48 PM
Wtb gears	OKC Z	Wanted	3	01-30-2012 04:11 PM

02-20-2015, 09:12 AM	#3 (permalink)
L33T Z34 Banned Join Date: Jun 2010 Location: Ahnald, MO Age: 47 Posts: 387 Drives: 09 K51 G C Bw/S 6MT Rep Power: 0	To fully utilize the 4.36 FD on the strip you're going to need slix, ECU reflash for a rev limiter @ or > 8,000RPM, and a Nismo oil pump. For the week end ST racer/garage queen, these gears are fun as hell and I wouldn't go to anything higher since the VQ don't make any torque. If you daily drive your Z and are slightly concerned w/gas mileage, then you better go for the 4.08 FD.