+ Reply to Thread
Results 1 to 9 of 9

Thread: NNBS 243 heads and springs

  1. #1

    NNBS 243 heads and springs

    I was wondering if a nnbs 07 silverado with 243 heads(ls6 heads) have the same ls6 springs inside or are they just the regular springs?
    03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
    13' Sierra Denali 2500HD CCSB 4x4

  2. #2
    Join Date
    Feb 2007
    Location
    Fort Worth
    Posts
    9,578
    I am only 98% sure, but they are the regular ones....

    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's

  3. #3
    Thanks, would be nice through if they were the ls6 springs. My friend wants to put a small cam in his truck(212/218). It would be cool if it had those springs and he'll only change out cams.
    03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
    13' Sierra Denali 2500HD CCSB 4x4

  4. #4
    Join Date
    Feb 2007
    Location
    Fort Worth
    Posts
    9,578
    Well, it kinda depends on how high of lift the cam is... What are the specs of the 212/218? .52x/.52x????

    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's

  5. #5
    I'm guessing the high lift version. 212/218 558.563 lift(i think)115 lsa
    03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
    13' Sierra Denali 2500HD CCSB 4x4

  6. #6
    Join Date
    Feb 2007
    Location
    Fort Worth
    Posts
    9,578
    Ahh, ok. Yeah, he will need pushrods and springs. If it is above .550 lift, you have to upgrade the springs and pushrods... Anything below .550, then you can use the stock stuff.

    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's

  7. #7
    Join Date
    Apr 2003
    Location
    Mansfield, Texas, USA
    Posts
    2,462

    Thumbs up

    Doubt they have LS6 springs.
    The superior man is modest in his speech, but exceeds in his actions. - Confucius

    "He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel

    '01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
    '80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL

    Let's face it, the red hair... makes 'em wet.


  8. #8
    Join Date
    May 2004
    Posts
    2,120
    If they are yellow color coded they are the LS6 springs.


    97 GMC, 2002 LS6.

    1991 GMC Syclone #1428

  9. #9
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    If the paint on the springs is brown it is the same as the springs on the 243 heads on a 6.0L engine in the GTOs.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts