Launch techniques for C4 auto's..
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,922
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
Launch techniques for C4 auto's..
with lots of torque, 428 rwtq in my LT1 with 3.75 gears and 2800rpm Vigilante. I run ET streets, but track isnt all that good here and th ebest 60' timewas 1.67. Should I power brake it up , or just hit it and let it flash up?
I need 2 tenths.I normally just flash it. I want a 11.49 and I am at 11.6
I need 2 tenths.I normally just flash it. I want a 11.49 and I am at 11.6
Team Owner
Joined: Nov 1999
Posts: 32,782
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From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
Cruise-In VI Veteran
Cruise-In VII Veteran
Steve, I think your doing everything right by flashing the convertor but I don't think 2800 is enough stall. I went through about 4 convertor changes before I got one I liked. Your making more power than me, call PI and tell Jack you want my convertor.
Le Mans Master
Joined: Feb 1999
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From: somers, ny
Steve are you spinning the tires or is that all she got? If your spinning the tires (noticably), then you need to work on traction. If it's all she's got, i would agree with Mackey. LT1s need to get the rpms up to make good power. Even Chris' (Insanity) car would only go 1.6s with a 2800 stall and his is a solid roller 396 w/410s on full slicks. We went to a 4400 stall and dropped the shorts into the 1.4s.....which was apparently over the limit for his IRS....LOL.
Team Owner
Joined: Nov 1999
Posts: 32,782
Likes: 11
From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
Cruise-In VI Veteran
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Originally Posted by ralph
i would agree with Mackey. LT1s need to get the rpms up to make good power. Even Chris' (Insanity) car would only go 1.6s with a 2800 stall and his is a solid roller 396 w/410s on full slicks. We went to a 4400 stall and dropped the shorts into the 1.4s.....which was apparently over the limit for his IRS....LOL.
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,922
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
Yes, I spin. The track here in Hawaii is pretty bad. Nothing Like Englishtown, or Rockingham NC where I used to run.
I run my ET Streets at 13#'s too. I am going to see if someone can VHT my tires next time I go, which will probably be on the 19th of Nov.
I run my ET Streets at 13#'s too. I am going to see if someone can VHT my tires next time I go, which will probably be on the 19th of Nov.
