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Thread: Finally got 1/4 times for my LS1 swap.

  1. #11
    Join Date
    Aug 2008
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    North Texas
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    0.2 in the 60' won't find the 0.6 you're missing in the 1/4 mile. Where are you shifting this thing?

  2. #12
    Join Date
    Feb 2007
    Location
    Spring, Texas
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    1,739
    You definitely need at least 3.73's or even 4.10's. That with a stall will get you there in a hurry! 3.42's suck off the line...ask me how I know!!

    2004 Silverado Crew Cab, forged iron 5.7, STS w/MP turbo, 10+ psi, FMIC, Tial 50mm BOV, Vic Jr, Snow performance meth, MTI Stealth cam .220/.220 .581/.581 115lsa, Comp chromoly pushrods, Yank TT3000 stall, LS1 Efans, 160 tstat, Trucool 40k trans cooler, 60# injectors, Walbro fuel pump, Patriot springs, Built 4l65E w/billet input & output shafts, Eaton posi, SD tuned...all installed by Klein North Automotive

  3. #13
    Join Date
    Feb 2008
    Location
    Gainesville, Fl
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    212

    Gears vs Stall

    Hey,

    Allen has me shifting at 6300 for my 1-2 then 6200 for 2-3. I only have a CS on the tranny, thats it. Im suprised i havent destroyed it....

    Well i didnt really want to get a Torque Converter until i could afford a FLT and a Torque Converter because i didnt want to have go in there twice. Would gears do good for me compared to the Torque Converter? Plus gears are only about $140 brand new ring and pinon i would keep my stock G80 for money reasons.
    04 Silverado RCSB
    02 LS1 Shortblock(Stock)
    LS6 CAM - 204/219 .551/.548 117.5
    243 Heads w/ Light Weight Valves
    Exhast- LT Pacesetters w/ory, 3" Straight pipe
    Suspension- DJM 4/6, Doetsch Shocks, Caltracs
    Need a ported DBW TB > http://www.ls1truck.com/forums/sale-...ale-trade.html

  4. #14
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    3.42s aren't bad off the line when you have monster torque.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #15
    Join Date
    Feb 2008
    Location
    Gainesville, Fl
    Posts
    212
    Yea which i guess i dont have....
    04 Silverado RCSB
    02 LS1 Shortblock(Stock)
    LS6 CAM - 204/219 .551/.548 117.5
    243 Heads w/ Light Weight Valves
    Exhast- LT Pacesetters w/ory, 3" Straight pipe
    Suspension- DJM 4/6, Doetsch Shocks, Caltracs
    Need a ported DBW TB > http://www.ls1truck.com/forums/sale-...ale-trade.html

  6. #16
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    That's what I thought (RPM) but I failed to look at the head mods in your signature. I assume you're still in 3rd at the lights with that much RPM?

  7. #17
    Join Date
    Feb 2008
    Location
    Gainesville, Fl
    Posts
    212
    Quote Originally Posted by GasGuzzler View Post
    That's what I thought (RPM) but I failed to look at the head mods in your signature. I assume you're still in 3rd at the lights with that much RPM?
    Yea i shift into 3rd at 94mph then at 99mph i cross the 1/4 mile. Would lowering my shift points improve my time? I have HP tuners and what little tuning knowlege i have...

    Also the 05 CCSB Silverado that ran 14.2 at 95mph with the stock 6.0l swap had 5700 1-2 and 5800 2-3 shift points.
    04 Silverado RCSB
    02 LS1 Shortblock(Stock)
    LS6 CAM - 204/219 .551/.548 117.5
    243 Heads w/ Light Weight Valves
    Exhast- LT Pacesetters w/ory, 3" Straight pipe
    Suspension- DJM 4/6, Doetsch Shocks, Caltracs
    Need a ported DBW TB > http://www.ls1truck.com/forums/sale-...ale-trade.html

  8. #18
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    That's a question for someone else here. if Allen put it there, it's probably the way it shoould be. Wish you had a video.

  9. #19
    Join Date
    Feb 2008
    Location
    Gainesville, Fl
    Posts
    212
    Ill get my roommate to take some next time we head down to the track.

    What rpm are you guys power braking to with stock torque converters? just to see if im doing something wrong. I launch from 1500rpms highest i think i can get it. Maybe can get it to 1600...
    04 Silverado RCSB
    02 LS1 Shortblock(Stock)
    LS6 CAM - 204/219 .551/.548 117.5
    243 Heads w/ Light Weight Valves
    Exhast- LT Pacesetters w/ory, 3" Straight pipe
    Suspension- DJM 4/6, Doetsch Shocks, Caltracs
    Need a ported DBW TB > http://www.ls1truck.com/forums/sale-...ale-trade.html

  10. #20
    Join Date
    Mar 2006
    Posts
    931
    I launch at 1500 RPM's with a 3k stall. Then again I have been spinning off the line lately so maybe I am doing something wrong! lol

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