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Thread: 6.0L with 5.3's heads??

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  1. #1
    Join Date
    Feb 2008
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    6.0L with 5.3's heads??

    hey guys, what happens if I do a 5.3 to 6.0 and install the 862's to the 6.0? the thing is I had them ported, polished and the 3 angle valve job on them and kind of would like to stay with them if they will do me any good.. or should I use the ones the 6.0 have?? cause i dont think I can afford the heads job again right now..
    thanks guys!
    06' Silverado RCSB 5.3L 4wd..
    PERFORMANCE: Cam, Springs, Pushrods, P&P heads & 3 angle valve job, Injectors, PS LT's & ORY, Nelson Tune, Catback, CAI, Comp Cam Double Timing Chain, HP Oil Pump, UD Pullies, ARP bolts, Stall, TBS, 4.10's, Iridium NGK's, G-80, 160 t-stat, HD-2 & Vette Servo, 46,000 tranny cooler, 75-125hp shot of funny Gas..
    HID's Hi, Lows & Fogs
    Waiting to be installed: LC-1 WB & Standalone system

  2. #2
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    Will work fine. Will bump up compression
    2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s

    2004 Buell XB12s

    Quote Originally Posted by LamboDoNoMo View Post
    "Never give up, NEVER BACK DOWN!!!"

  3. #3
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    so it would be better than 6.0's heads?
    06' Silverado RCSB 5.3L 4wd..
    PERFORMANCE: Cam, Springs, Pushrods, P&P heads & 3 angle valve job, Injectors, PS LT's & ORY, Nelson Tune, Catback, CAI, Comp Cam Double Timing Chain, HP Oil Pump, UD Pullies, ARP bolts, Stall, TBS, 4.10's, Iridium NGK's, G-80, 160 t-stat, HD-2 & Vette Servo, 46,000 tranny cooler, 75-125hp shot of funny Gas..
    HID's Hi, Lows & Fogs
    Waiting to be installed: LC-1 WB & Standalone system

  4. #4
    Join Date
    Oct 2008
    Location
    Houston
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    You will gain a lot of low end torque and lose a lot of top end horse power.
    2002 Tahoe 4.8 - soon to be turbo'd - SOLD
    1989 Mustang - LX Vert - 351W-TT - 2inches of dust covering it
    2012 Raptor - 497rwhp at 10psi
    If you aint breaking - you aint going fast enough

  5. #5
    Alot of people down here swap 5.3 heads to bump up the compression with good results.
    03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
    13' Sierra Denali 2500HD CCSB 4x4

  6. #6
    will work fine

  7. #7
    had a friend with and lq9 6.0 and had an ms3 cam and 862 heads ported, milled, and valve job and went 12.3 with traction issues. so i think it will work good.

  8. #8
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    Quote Originally Posted by rdsmoke View Post
    had a friend with and lq9 6.0 and had an ms3 cam and 862 heads ported, milled, and valve job and went 12.3 with traction issues. so i think it will work good.
    WOW! That will work!! It would work better in a Lq9 vs Lq4 right?? I'm talking N/A..
    06' Silverado RCSB 5.3L 4wd..
    PERFORMANCE: Cam, Springs, Pushrods, P&P heads & 3 angle valve job, Injectors, PS LT's & ORY, Nelson Tune, Catback, CAI, Comp Cam Double Timing Chain, HP Oil Pump, UD Pullies, ARP bolts, Stall, TBS, 4.10's, Iridium NGK's, G-80, 160 t-stat, HD-2 & Vette Servo, 46,000 tranny cooler, 75-125hp shot of funny Gas..
    HID's Hi, Lows & Fogs
    Waiting to be installed: LC-1 WB & Standalone system

  9. #9
    Join Date
    Dec 2006
    Posts
    4,033
    Quote Originally Posted by White Devil View Post
    WOW! That will work!! It would work better in a Lq9 vs Lq4 right?? I'm talking N/A..

    heres a comparison dyno the red ( 402 rwhp) is when i had ported 706 5.3 heads..






    the blue line is from a head and cam swap
    Simple: 408 on steroids!
    single digits coming soon!

  10. #10
    Join Date
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    Arizona
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    Quote Originally Posted by skeet View Post
    heres a comparison dyno the red ( 402 rwhp) is when i had ported 706 5.3 heads..






    the blue line is from a head and cam swap
    38rwhp for the cam and L92 heads?? That'll work!!
    06' Silverado RCSB 5.3L 4wd..
    PERFORMANCE: Cam, Springs, Pushrods, P&P heads & 3 angle valve job, Injectors, PS LT's & ORY, Nelson Tune, Catback, CAI, Comp Cam Double Timing Chain, HP Oil Pump, UD Pullies, ARP bolts, Stall, TBS, 4.10's, Iridium NGK's, G-80, 160 t-stat, HD-2 & Vette Servo, 46,000 tranny cooler, 75-125hp shot of funny Gas..
    HID's Hi, Lows & Fogs
    Waiting to be installed: LC-1 WB & Standalone system

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