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Old 9th-December-2007, 11:55 AM   #1
fossilrunner
 
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footbrake racers

Next year im gonna be running in a foot brake class and I wanted to know what launch rpm you guys have had the best luck with? My setup is a th-350 with a redneck 3500 converter launching off the 2 step.
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Old 9th-December-2007, 02:09 PM   #2
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Every car will be a little different in this situation. Before I changed converters I had a 10" and would leave at 1200 RPM. With my new 8" I was around 1800 RPM. I tried leaving higher around 3000+ but the car didn't like it and I have not had a lot of testing time with the converter. 1500-2000 all seem to work well so far.

Although leaving off idle is another option I like to preload the suspension a little so I usually bring it up on the converter but leave some room for the converter to flash and get the car going.
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Old 9th-December-2007, 02:29 PM   #3
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Although leaving off idle is another option I like to preload the suspension a little so I usually bring it up on the converter but leave some room for the converter to flash and get the car going.
My best ET and 60ft times were done that way.
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Old 9th-December-2007, 05:21 PM   #4
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what launch rpm you guys have had the best luck with?
That's about like asking a guy what pickup line works best for you....depends on the girl, the bar, the phases of the moon............
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Old 9th-December-2007, 05:26 PM   #5
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That is the way I do it but don't have two step. Just load suspension.
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Old 9th-December-2007, 05:36 PM   #6
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How well does your redneck convertor work i was thinking of getting one??
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Old 9th-December-2007, 05:38 PM   #7
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have not had a chance to test it out yet. its been to cold and rainy here. Just plannin for next season
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Old 9th-December-2007, 06:02 PM   #8
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Question

They had an old super stock show on one of the channels the other day. Sox and Martin and a bunch of others. One famous racer -forgot name- ran a 4 speed and his partner ran an auto. He said the guy reved the eng and put it in gear in the auto - to take off. Said it worked just the same as a 4 speed.

Does thst sound right to you old graggers??
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Old 9th-December-2007, 06:24 PM   #9
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They had an old super stock show on one of the channels the other day. Sox and Martin and a bunch of others. One famous racer -forgot name- ran a 4 speed and his partner ran an auto. He said the guy reved the eng and put it in gear in the auto - to take off. Said it worked just the same as a 4 speed.

Does thst sound right to you old graggers??
If your talking about a neutral drop, this is very bad. I did this one time in my nova and blew the spider gears into pieces. Something I will never do again.
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Old 9th-December-2007, 09:10 PM   #10
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That was an episode of American Muscle Car....I saw the same show just the other night. I think he was in a '69 Camaro and I didn't understand the concept, fossilrunner is right....sounds like a great way to do damage!
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Old 9th-December-2007, 09:36 PM   #11
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Just sounds like a stupid way to break things.

There may be someone that had ran a clutch with an automatic and can chime in about it. With today converters and trans brakes I don't see a need for it anymore.
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Old 9th-December-2007, 09:38 PM   #12
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Next year im gonna be running in a foot brake class and I wanted to know what launch rpm you guys have had the best luck with? My setup is a th-350 with a redneck 3500 converter launching off the 2 step.
A 2 step is illegal in Pro/footbrake classes. As far as launch RPM's, every car is different. You should choose your launch RPM based not on your ET's, but your lights.
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Old 9th-December-2007, 09:52 PM   #13
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TESTING,TESTING and more TESTING.I tried from idle up to the highest RPM that would not push the tires threw the lights.Tire pressure,pre-load and watch your 60' times GOOD LUCK
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Old 9th-December-2007, 10:51 PM   #14
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My best times have come from leaving at 2000 rpm.
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Old 9th-December-2007, 11:15 PM   #15
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I have the 2 step set at 4600. That's the way to go. And not on an automatic. Manual trans = fun. Automatic is great, just not for me. Put a stick in it.
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