| Re: The old 3.73 vs 3.53 debate |
Subject: Re: The old 3.73 vs 3.53 debate by CentralCoaster on 2009/4/21 18:01:24 Actually its closer to 25.5", which is a very common diameter for C4s. I think a decent driver can pull 98 mph traps in a stock L98. My tired '85 can do that. So I should clarify, I believe 3.33 is actually ideal for the strip in your case. I went with 3.45s which a bit short but I have a tall overdrive, you don't. So I think the 3.07 are a good compromise for you if you're not a track whore. Here's some more numbers at 98 mph with a 25.5" tire in the 1:1 gear: 3.07 - 3970 rpm 3.33 - 4300 rpm 3.55 - 4590 rpm 3.73 - 4820 rpm I shift at 4200rpm. If I go beyond that I'm losing power vs what the next gear could make. I believe this also applies in the top gear, you don't want to run the engine too far out to where it starts causing your average hp on the run to decrease. You simply can't have both on the 700R, a good drag gear is going to hurt your fuel mileage in the crapper on the highway. at 80 mph in overdrive: 3.07 = 2270 rpm 3.33 = 2460 rpm 3.55 = 2620 rpm 3.73 = 2750 rpm My '85 lugs along at 1800 rpm in 6th gear at 80 mph. I love it, and I can manage about 26 mpg. At 2500 rpm, I bet I'd be down to 22mpg or worse. |
