|
06-30-2017
|
#1 |
 
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,842
|
Discovered a bonus with my recent purchase
While driving the (new to me) Z recently I noticed that the rpms seemed high for any given speed in all gears. I was informed by the seller that the differential had been rebuilt in the last two years but never asked if he changed the ratios. So I conducted an experiment. I noted the rpms at 60mph in 4th gear (1:1 trans ratio) I was running at 3300 rpm. My rear tires are 25 inches tall. Using the calculator below:
http://www.crawlpedia.com/rpm_gear_calculator.htm It appears I have 4:10 gears.  Stock 3.42's should have gotten me 2750 rpm and 3.73's should be 3000 rpm all else being equal. So... unless the tach is very wrong, my first real mod is already done. Cool H 
__________________
90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
|
|
| Thread Tools | |
| Display Modes | |
|
|
Threaded Mode