ZR-1 Net Registry Forums - View Single Post

Bob Eyres · 05-22-2014

So Pete, how much better did your 60ft. times get with the 4.10's?

The combination of a better 60ft. time, combined with the advantage of being able to stay in a, (higher), more powerful RPM range throughout the run should add up to a better e.t.
It doesn't seem possible that the brief power shift from 3rd to 4th costs you THAT much.

Is it a possibility that with your high power output, (550+?), and the 4.10 gears, you may need more tire to see the full advantage of this gear ratio?

Your times are phenomenal. But its just hard for me to believe that the best 1/4 mi. e.t. for a high power, high rpm ZR-1 is with a three speed with no torque converter.

05-22-2014	#35
Bob Eyres Join Date: Jul 2005 Location: Jupiter, Fl. Posts: 815	Re: 4.10 gears...not what I expected. So Pete, how much better did your 60ft. times get with the 4.10's? The combination of a better 60ft. time, combined with the advantage of being able to stay in a, (higher), more powerful RPM range throughout the run should add up to a better e.t. It doesn't seem possible that the brief power shift from 3rd to 4th costs you THAT much. Is it a possibility that with your high power output, (550+?), and the 4.10 gears, you may need more tire to see the full advantage of this gear ratio? Your times are phenomenal. But its just hard for me to believe that the best 1/4 mi. e.t. for a high power, high rpm ZR-1 is with a three speed with no torque converter. __________________ "It's about the car, not the people." 1991 ZR-1 White/Black #1236 (Owner since 1994). Stock engine with bolt-ons: Hurst shifter,"Forced Air" intake, Coplon duct, Bee Cool Radiator, Demon coils, Jeal prom, Watson headers, X pipe, 3" B&B's, Rippie flywheel, 4:10 gears, A molds, Toyo Proxes-R888's 12.06@117mph. 1.76 60ft. Last edited by Bob Eyres; 05-22-2014 at 10:29 AM.