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Old 07-16-2009, 08:37 AM
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Default Re: Launch RPM for a 4 Speed?

Hey, I just wanna say, is that a blast driving that 4-speed down the strip or what?! I've raced 9-second Drag Radial cars in competition but they always 'Glides or Turbo 400's. When I blasted down the strip in my 11-second '55 Chevy with the stick shift, I couldn't believe how much fun it was! It made me realize that this.......is what I've been missing from my life. A clutch pedal at the drags!
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Old 07-16-2009, 11:33 AM
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Default Re: Launch RPM for a 4 Speed?

My 67 Camaro, basically stock 350 with 3.42's on slicks with a 4 speed M20. I launch the car at 5,000-5,500 rpm. Dead hooks.
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Old 07-16-2009, 02:58 PM
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Default Re: Launch RPM for a 4 Speed?

Put a little more air in the slicks and come out higher. 3000 rpm with slicks is a little low.
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Old 07-16-2009, 05:14 PM
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Default Re: Launch RPM for a 4 Speed?

If worried about hurting the original rear, which is very possible leaving at 5000 or so, with slicks and a stick, I would put a set of street tires on it, which will spin when leaving, making it much easier on the RE, will allow your motor to rev (making power) and as you get used to it, you will still be able to turn some very respectable times.
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Old 07-16-2009, 08:05 PM
Chevy454 Chevy454 is offline
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Default Re: Launch RPM for a 4 Speed?

What was your MPH? That will tell the tale of how good your engine is...also, you need your timing in a lot earlier...all in by 2k would be nice. Carb stuff...Eric would be the man to talk to, the bog could be from a number of things, wrong jetting, float level, fuel slosh, etc...

Also, if you value that KQ at all, get it the heck out of there...I've seen people twist rear ends on drag radials and even street tires...rare, but it happens...you have to realize, the track is prepped to hook, so you're gonna find the weak link in your drivetrain, I promise!
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Old 07-16-2009, 08:27 PM
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Default Re: Launch RPM for a 4 Speed?

[ QUOTE ]
... but it happens...you have to realize, the track is prepped to hook, so you're gonna find the weak link in your drivetrain, I promise!...

[/ QUOTE ]

Very true, just ask COPO Pete when he was testing his COPO Camaro / Chevelle / Nova for MCR 10 years ago - the rear broke in the Chevelle! It didn't hurt the tube, but like Rob says - it happens!
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Old 07-16-2009, 08:31 PM
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Default Re: Launch RPM for a 4 Speed?

I think I remember when COPO Pete broke that Chevelle 12-bolt. If I remember correctly, the axle tube actually ripped out of the cast center section. It was an ugly picture.
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