keeping in the powerband

[Gen1GT]

I see. Ya I have a short shifter, throttle response is better due to intake, axleback, header and cams. My rpm needle shoots up quicker but also falls too much in between shifts. Like twilight mentioned..each shift drops about 2-3000rpm. Anyway of making that gap smaller? Other than getting custom tranny?

Ok..another question..how do I raise redline to..say...7500rpm? What kind of mods would I have to have/require?

Thanks in advance

Shift faster. And shift at fuel cut.

You WOULD NOT want to rev your engine to 7500. You'd need to do some bottom end work, then still, I wouldn't rev to 7500 on a regular basis in an FS.

Andrew, I think you and I are the only ones who understand the gearing concept.

Everyone, check out my dyno chart. I know it may be a different power curve than the FSs, but the principle is the same. In my 1-2 shift, the RPM drops 3000RPM. If I shift at peak, which is 6500(where I make 117whp), it'll drop to 3500(where I make 70whp). Now, I make about 107whp at 7400RPM. For that entire band between 6500 and 7400, I make about 30-45 more hp than if I had shifted, and ran from 3500-4900(where I still only make 104whp). So in my powerband, there is not one spot below say...5200RPM, where I make more hp than at fuel cut. My point? Just because you're past peak power, doesn't mean you're making less power than 3000RPM earlier.

Even still. Just say you make 100whp at 6500(FS fuel cut is 6500 right?), and 105whp at 3500, you lose the extreme torque multiplication factor of a lower gear. ie you probably make 1700lb/ft in first gear, and maybe only 1000lb/ft in second gear. Torque accelerates your car harder....

 

[Gen1GT]

yeah, funky..this is more of a precautionary thing..the oil pan well help your car NOT blow up when taking hard corners..

Oil is gooood..MMM'Kay

 

[twilightprotege]

another thing to point out - why do people always talk about power to weight ratio? that's because power is more usable than torque (sort of). if we talked about torque to weight ratio, buses and trucks would be the fastest vehicles on the roads!

 

[Gen1GT]

another thing to point out - why do people always talk about power to weight ratio? that's because power is more usable than torque (sort of). if we talked about torque to weight ratio, buses and trucks would be the fastest vehicles on the roads!

lol..hehe My brother drives a truck for Interstate batteries. Turbo inline-6 diesel, somewhere around 1200lb/ft, but it redlines at 2500RPM, and has a top speed of 120kph. We times it's 0-60, and it was almost a minute and a half. So much for torque being better(as every muscle car guy would have you believe)

 

[iluvmacs]

The car isn't geared to use the torque for 0-60 acceleration. When you have that much torque, it's all in the gearing. However, when you change the gears, you need a much stronger clutch to handle such a torque dump.

Remember, at 2000 RPM that engine probably makes 300+ hp

 

[Gen1GT]

It's geared to take advantage of it's powerband, which is extremely small. Same thing with out cars. You're still making power at high RPM, so use it....