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Thread: Lowering Springs and Drag Racing Purposes

  1. #1
    Beyond Help JonnyG2132's Avatar
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    Default Lowering Springs and Drag Racing Purposes

    Hi all,
    I have SLP lowering springs on my car. Last year I changed out the rear springs and put the stock springs back in, so now I have lowering springs in the front and stock springs in the back. I figured that this would help with weight transfer allowing it to squat hard. I thought the more squat the more pressure on the rear tires, which would result in better grip. Reading around it appears that this may not be a good idea and may be slowing me down out of the hole. What are you opinions on this? Should I put the rear lowering springs back in? Again, this is question is only for drag racing purposes, and not cornering.

    Thank you
    Jon
    2008 NA G8 GT

    1/4 mile = 10.93 @ 123
    60' = 1.47
    DA = 500


    Naturally Aspirated-230/242 Cam-.030 Milled Heads-Valve Job-New Era Performance ECM/TCM tune-New Era Performance Ported Throttle Body-Vararam CAI-Rick Crawford Modified Intake Manifold-VMS HSRK-UD Pulley-MSD Plugs-4" MAF-Ram Air Plate-Circle D Triple Disk 4000-4200 245mm Converter-3.45 gears-1 7/8 American Racing Headers-Magnaflow mid muffler-SLP Lowering Springs in Rear-M&H Skinnies-Mickey Thompson ET Street Radials 295/45/17-Dark Star Rims

    - ARANGO AUTOMOTIVE & TOWING SERVICES, WEBSTER NY

  2. #2
    Tuning-Porting-Mods G8-4-Speed's Avatar
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    Default

    I would go for the stiffer rear springs to control the squat. It is best for the tire to absorb the energy and help it hook.
    https://www.facebook.com/RickCrawfordRacing
    2009 G8 GT-Rick Crawford- LS-4-SPEED@nc.rr.com

    2.00 60ft 13.06 @ 106.65 w/ 1.85 SLP Rocker-HPTuner
    1.97 60ft 12.97 @ 107.9 w/ 3.45 gears
    1.97 60ft 12.87 @ 107.7 w/ 4"-2.5" exhaust
    1.94 60ft 12.57 @ 111.9 w/ 217/225 Lunati cam
    2.03 60ft 12.37 @ 115.3 w/ Doug Thorley headers
    1.94 60ft 12.20 @ 115.0 w/ 219/233 Thumpr Cam
    1.70 60ft 11.38 @ 121.5 w/ 100hp NOS Dry shot-HSW controller & 285/40 NT05 Drag Radials on stock 18's
    1.72 60ft 11.65 @118.55 w/ 221/233 111LSA+0 Ported AirRam intake, Street tires. All Motor. DoD/AFM still functional.
    1.66 60ft 10.87 @ 127.08 w/ 221/233 lunati, 2800 stall, 100HP wet nitrous shot, milled & ported LS3's.
    1.65 60ft 10.81 @ 129.10 150Hp shot 2600 stall.
    1.53 60ft 10.59 @ 129.72 ALL MOTOR! ! ! ! Fastest N/A G8 Record Holder

  3. #3
    Beyond Help JonnyG2132's Avatar
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    Quote Originally Posted by G8-4-Speed View Post
    I would go for the stiffer rear springs to control the squat. It is best for the tire to absorb the energy and help it hook.
    Def something to consider then..

    Thanks Rick
    2008 NA G8 GT

    1/4 mile = 10.93 @ 123
    60' = 1.47
    DA = 500


    Naturally Aspirated-230/242 Cam-.030 Milled Heads-Valve Job-New Era Performance ECM/TCM tune-New Era Performance Ported Throttle Body-Vararam CAI-Rick Crawford Modified Intake Manifold-VMS HSRK-UD Pulley-MSD Plugs-4" MAF-Ram Air Plate-Circle D Triple Disk 4000-4200 245mm Converter-3.45 gears-1 7/8 American Racing Headers-Magnaflow mid muffler-SLP Lowering Springs in Rear-M&H Skinnies-Mickey Thompson ET Street Radials 295/45/17-Dark Star Rims

    - ARANGO AUTOMOTIVE & TOWING SERVICES, WEBSTER NY

  4. #4
    Tuning-Porting-Mods G8-4-Speed's Avatar
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    If you cut a stock front spring to lower the car over a lowering spring it will have better lift in the front at the track but will have a lower spring rate which will bottom out easier driving around.
    https://www.facebook.com/RickCrawfordRacing
    2009 G8 GT-Rick Crawford- LS-4-SPEED@nc.rr.com

    2.00 60ft 13.06 @ 106.65 w/ 1.85 SLP Rocker-HPTuner
    1.97 60ft 12.97 @ 107.9 w/ 3.45 gears
    1.97 60ft 12.87 @ 107.7 w/ 4"-2.5" exhaust
    1.94 60ft 12.57 @ 111.9 w/ 217/225 Lunati cam
    2.03 60ft 12.37 @ 115.3 w/ Doug Thorley headers
    1.94 60ft 12.20 @ 115.0 w/ 219/233 Thumpr Cam
    1.70 60ft 11.38 @ 121.5 w/ 100hp NOS Dry shot-HSW controller & 285/40 NT05 Drag Radials on stock 18's
    1.72 60ft 11.65 @118.55 w/ 221/233 111LSA+0 Ported AirRam intake, Street tires. All Motor. DoD/AFM still functional.
    1.66 60ft 10.87 @ 127.08 w/ 221/233 lunati, 2800 stall, 100HP wet nitrous shot, milled & ported LS3's.
    1.65 60ft 10.81 @ 129.10 150Hp shot 2600 stall.
    1.53 60ft 10.59 @ 129.72 ALL MOTOR! ! ! ! Fastest N/A G8 Record Holder

  5. #5
    Beyond Help JonnyG2132's Avatar
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    Oct 2009
    Location
    Webster, NY
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    Ya, I will prob just stick with the front lowering spring. But thanks for that info.
    2008 NA G8 GT

    1/4 mile = 10.93 @ 123
    60' = 1.47
    DA = 500


    Naturally Aspirated-230/242 Cam-.030 Milled Heads-Valve Job-New Era Performance ECM/TCM tune-New Era Performance Ported Throttle Body-Vararam CAI-Rick Crawford Modified Intake Manifold-VMS HSRK-UD Pulley-MSD Plugs-4" MAF-Ram Air Plate-Circle D Triple Disk 4000-4200 245mm Converter-3.45 gears-1 7/8 American Racing Headers-Magnaflow mid muffler-SLP Lowering Springs in Rear-M&H Skinnies-Mickey Thompson ET Street Radials 295/45/17-Dark Star Rims

    - ARANGO AUTOMOTIVE & TOWING SERVICES, WEBSTER NY

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