I was wondering if any/all might comment on 1/4 mile launch technique. i.e. what rpm to launch at & with stock 3:42s on an mn6 will I need to reach fourth or will redline in 3rd get me there. I have only tried once on my 97 making 317RWHP. My 0-60 time was off from chevy's stock numbers at 5.32 versus a listed 4.7 & my quarter mile was 13.6 at 109.6 MPH. I feel I am really off as a 97 stock mn6 will make 292RWHP as mine did before the dyno tune & air box. This was measured on an accelerometer & my graph showed me shifting at about 5200 RPM, thus reaching fourth in the run. I was wondering where a better launch & shifting at redline would get me. What do you guys think?

 

Do a search for the name Ranger, and he has a lot of posts about launching, burnout, etc...

He is very helpful and informative.

 

I found that 3200 rpm and letting out the clutch till the weight transfers to the back then drop the clutch from there. With my G-Tech it gave me a 4.1 sec. for 0 to 60 and 12.97 at 116 mph. I was very happy with that. Of course there's no reaction time. I hope that helps. If anyone has other ideas that would be great.

 

Should that be 12.97? ET seems too slow for the 0-60 and trap speed.

 

Bone stock MN6 with 400 miles.
Bring revs to around 2750 and let out the clutch quickly. Hit redline in 3rd about 50 ft before the finish line. Never went into forth. Best run 13.4 @109mph. That was in April in decent air, which is critical and may determine if you need to hit 4th gear.
Made a few mods since then and with better airflow probably would need to hit 4th now.
Be careful drag racing is addictive in these cars.

 

Raner's sig block will help a ton. Print hard copy and bring it to the track and read, visulaize between runs. Helps a ton too, and do not get down. There are some insane fast drivers round here, but they are great guys and lend a hand to the rest of us. Good start IMO, quick release, firm to the wood (not a stomp) , shift as close to redline with out hitting the limiter, and have fun!
Dave

 

Yeah! You are right. I was so pleased to get under 14 seconds. I made the correction. I couldn't leave it that way.

 

Thanks for the info guys. My run was in 40 degree weather with me wearing a suit & tie in a deserted, but public road down by the beach.(I Know, I Know, but it really was deserted, especially at sun up in the middle of winter) I believe I launched at about 2500RPM but my 0-60 time seems slow. Some wheel hop and I apparently was overshifting. I havent tried it since but it would seem under better conditions I should hit the 12s. Any more comments would be welcome.

 

No offense but vehicle mounted units that determine what you should have run are nothing more than a good guesstimate at best. Until you actually get it to a drag strip with accurate timing equipment, you won't know what the car is actually capable of running. And if you can run a high 12 sec et with minimal driving experience,, well that would be amazing since some very experienced drivers in identical cars run very bests of low 13's.

 

No offense taken, but I think you miss my point. It would seem that a car making 25RWHP more than a stock 97, should equall or slightly better by a couple of tenths the official chevy 0-60# which is 4.7, all things being equall, which I am sure they were not. I ran 5.32 0-60, but yet the 13.6 @109.6 seems too conincidentally close to the official chevy #, leading me to believe that the g-tech is reasonably accurate. I guess what I am really asking is what the car SHOULD run with the extra juice, which is only 25RWHP more than stock. My premise about the launch was based on my belief that I ran almost a half second slower 0-60, than the official stock # & was wondering where I would have wound up if I had hit the launch right. By the way even though I only ran this car once in that fashion, I would like to think my positive shifting Is pretty good, after years of diving a hopped up 4speed 76 coupe & 4plus3 87 for years. Also, this car has a hurst shifter, signifigantly better than the stock shifter & provides much quicker shifts. So I wonder what the car SHOULD run???