WooHoo!!! Late night drive! learning to launch...
Thread Starter
Joined: Oct 2007
Posts: 2,606
Likes: 6
From: Kemah, Tx
Car: 1991 z28
Engine: Turbo 310
Transmission: T56
Axle/Gears: D44
WooHoo!!! Late night drive! learning to launch...
well i started to try to data log tonight(130am), and well that didnt work because my laptop wont talk to my ecm, but anyways since i had the car out on some backroads where i was going to datalog, i figured hey, why not have some fun, and do something productive and learn to launch! well long story short i left half of my rear tires on the concrete, inhaled ALOT of tire smoke, and remembered how much fun it is to drive my car hard. my question is, with a t-56 and 342 gears on 9inch street tires, is it possible to get a decent launch on the street?i lowered the tire pressure to 30psi probly too high, reved it up to about 2k, let the clutch out and hit the gas hard, but not WOT by any means, and i just spun and spun and spun. fun yes 
, fast no 
. i tried launching from a lower rpm to keep the wheels attached, but the HSR has NO low end, so its a total pig untill about 2200, so i got traction, but didnt really go all that fast. tried to be easyer with the gas and clutch, but again rpms got too low and it was a pig off the line. i have full sphon rear setup, except lca relocation brackets which are coming soon, and newish shocks/struts, falken z-rated tires. its frustrating with all of these "good" parts, i should have a much better launch available to me, but i cant seem to get it, what am i doing wrong? i know its probly human error
, fast no . i tried launching from a lower rpm to keep the wheels attached, but the HSR has NO low end, so its a total pig untill about 2200, so i got traction, but didnt really go all that fast. tried to be easyer with the gas and clutch, but again rpms got too low and it was a pig off the line. i have full sphon rear setup, except lca relocation brackets which are coming soon, and newish shocks/struts, falken z-rated tires. its frustrating with all of these "good" parts, i should have a much better launch available to me, but i cant seem to get it, what am i doing wrong? i know its probly human error 
Junior Member
Joined: Jul 2000
Posts: 11
Likes: 0
From: Bear, DE, U.S.A.
Car: Grand National
Engine: 3.8 Turbo
Transmission: 200-4R
Axle/Gears: 3.42 G80
Re: WooHoo!!! Late night drive! learning to launch...
If you want to launch with any power, Ive got two words for you:
DRAG RADIALS
Those were the best addition I made to my car so far.
DRAG RADIALS
Those were the best addition I made to my car so far.
Supreme Member
Joined: May 2003
Posts: 2,839
Likes: 0
From: CT
Car: Mustang
Engine: Bolt Ons
Transmission: Stock
Axle/Gears: 3.73
Re: WooHoo!!! Late night drive! learning to launch...
Practice... Ive been 1.91 60' on street radials (18" radials) witha stick shift car.
Supreme Member
iTrader: (2)
Joined: Mar 2004
Posts: 1,941
Likes: 0
From: Kissimmee, FL
Car: 1991 Camaro RS
Engine: 357cid
Transmission: T5 Swap
Axle/Gears: 10bolt 7.5" 3.23 soon to be 3.73
Re: WooHoo!!! Late night drive! learning to launch...
well i started to try to data log tonight(130am), and well that didnt work because my laptop wont talk to my ecm, but anyways since i had the car out on some backroads where i was going to datalog, i figured hey, why not have some fun, and do something productive and learn to launch! well long story short i left half of my rear tires on the concrete, inhaled ALOT of tire smoke, and remembered how much fun it is to drive my car hard. my question is, with a t-56 and 342 gears on 9inch street tires, is it possible to get a decent launch on the street?i lowered the tire pressure to 30psi probly too high, reved it up to about 2k, let the clutch out and hit the gas hard, but not WOT by any means, and i just spun and spun and spun. fun yes , fast no . i tried launching from a lower rpm to keep the wheels attached, but the HSR has NO low end, so its a total pig untill about 2200, so i got traction, but didnt really go all that fast. tried to be easyer with the gas and clutch, but again rpms got too low and it was a pig off the line. i have full sphon rear setup, except lca relocation brackets which are coming soon, and newish shocks/struts, falken z-rated tires. its frustrating with all of these "good" parts, i should have a much better launch available to me, but i cant seem to get it, what am i doing wrong? i know its probly human error
, fast no . i tried launching from a lower rpm to keep the wheels attached, but the HSR has NO low end, so its a total pig untill about 2200, so i got traction, but didnt really go all that fast. tried to be easyer with the gas and clutch, but again rpms got too low and it was a pig off the line. i have full sphon rear setup, except lca relocation brackets which are coming soon, and newish shocks/struts, falken z-rated tires. its frustrating with all of these "good" parts, i should have a much better launch available to me, but i cant seem to get it, what am i doing wrong? i know its probly human error
Member
Joined: Mar 2004
Posts: 472
Likes: 1
From: Brandon Mississippi
Car: 1989 Camaro
Engine: 383
Transmission: 700R4
Axle/Gears: 3.73
Re: WooHoo!!! Late night drive! learning to launch...
When I was running street tires I could launch in 2nd gear and just smoke em up. I added the DRs and I can still spin the tires but not even close to what it would do with street tires.
Low rpm launch = slower because of being under the powerband
Higher rpm launch with a lot of tire spin = just need more tire.
Low rpm launch = slower because of being under the powerband
Higher rpm launch with a lot of tire spin = just need more tire.
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