C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

More Power????

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Old Nov 11, 2007 | 10:27 PM
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Default More Power????

I have an 85' L-98 and am sick of these punk kids in their mustand GT's pulling up next to me and wanting to run. Now I know I could take most of them but I would like a few ideas on how to up my power so I can know that I can take them.

P.S. What about a supercharger on a stock setup???? Need some info fellas. Thanks.
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Old Nov 11, 2007 | 11:06 PM
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Check out this thread that's a few lines down from yours
http://forums.corvetteforum.com/show....php?t=1861312

You would be suprised what a cam/heads and exhaust will do if you can get away with it where you live. A supercharger setup would cost more than a whole car, and I'd personally rather have 2 cars

Of course, you could always put it on the bottle, just for those once-in-a-while mustangs.

Edit: SORRY wrong thread...http://forums.corvetteforum.com/show....php?t=1755975

Last edited by motorholmes; Nov 11, 2007 at 11:19 PM. Reason: add thread
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Old Nov 11, 2007 | 11:21 PM
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If you're just wondering in general which modifications increase power, here's my understanding, starting with the most effective modifications and working our way down:

#1. Increase displacement (bore out bigger cylinders and/or get a crankshaft with bigger stroke, switching to a bigger block if need be)

#2. Rev higher (typically when bumping up the rev limit, you must also upgrade the whole valvetrain, possibly lighten and strengthen the rotating assembly, upgrade the injectors, and make sure the intake and exhaust systems can keep up, as well as the little stuff like PCV and the distributor rotor)

#3. Increase the amount of mixture burned, by increasing the velocity of air/fuel entering the combustion chamber (Pull the intake and heads and have them custom-ported, optimize the restrictiveness of the intake/exhaust systems to allow for maximum port flow velocity at the desired RPMs (don't assume that less restriction = better! Huge exhaust sizes and high-flow air filters are largely a gimmick!), and if practical, turbocharge or supercharge, while cooling the incoming air to allow it to be packed in more densely)... and/or .... increase the explosiveness of the mixture burned, by pumping in nitrous.

#4. Optimize intake/exhaust valve timing for power (use a different cam), and likewise tune the air/fuel and spark timing curves (an aggressive enough tune will require race fuel)

#5. Decrease powertrain losses and rotating inertia (lighten the rotating assembly including flywheel and clutch, make sure everything is well-maintained and well-lubed, eliminate engine-driven accessories or change the pulley sizes, get lighter rear wheels and tires, and if you can stand the noise, dogtooth gears.)

Of course, putting that power to the ground is a whole different issue... with that in mind, most likely the only thing you need to consistently beat other drivers is, stickier tires than they've got, better driving technique, and an effective and well-maintained suspension.

Last edited by LouisvilleLT4; Nov 12, 2007 at 11:41 AM.
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