Best way to slow a car down ?
 

Just wondering if anybody has any experience on how to effectivley slowing a car down about 8 tenths to 1 sec. in order to into two classes. The car should run somewhere around 11.8 - 12.0 flat out. looking to slow it down to 12.8 to make the sportsman class brake.

Thanks.

Re: Best way to slow a car down ?
 

Weight, shift lower, take timing out. That will get you there.

Re: Best way to slow a car down ?
 

I prefer lifting and or using the brakes.

Re: Best way to slow a car down ?
 

Dumping a full 9 tenths ... no thanks

Re: Best way to slow a car down ?
 

put a FORD motor in it.

Re: Best way to slow a car down ?
 

Ya, that should do the trick.

Re: Best way to slow a car down ?
 

Pull a bunch of timing ?

edit...Sorry didnt see someone else had already made the correct changes...Z28.....

Re: Best way to slow a car down ?
 

I'd try a restrictor plate under a spacer or disconnect the secondaries or restrict the throttle opening or all of the above.

Re: Best way to slow a car down ?
 

I'd try a restrictor plate under a spacer or disconnect the secondaries or restrict the throttle opening or all of the above. I took 3 seconds out of a 10 second car by only allowing the carb to open about a third of the way. I put a piece of aluminum on the underside of the pedal.

Re: Best way to slow a car down ?
 

The best way to do it is install a bolt under the gas pedal, and adjust it to limit full throttle until you get the result your looking for.
It works !

Re: Best way to slow a car down ?
 

He said he wanted to slow down a second not make it a second faster....lol..

Mechanical throtle stops work good, would need to add too much weight to get that much out of it...

May try swaping out the 4bbl for a decent 2 bbl carb... less fuel/air= less power....

Re: Best way to slow a car down ?
 

Thanks for the suggestions guys, I picked up a throttle stop made by moroso today. looks like it will work pretty good !
http://www.jegs.com/i/Moroso/710/650...oductId=764313

Re: Best way to slow a car down ?
 

Have DJ Raiser drive it! ;) Hell my car never left the water box!

Re: Best way to slow a car down ?
 

This is the cheapest way to do it, and much easier to adjust than a bolt under the gas pedal. I know an old super street 10.90 racer that still uses this part to slow the car down for that index. Best of luck.