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Forum: Performance Modifications

Engine | Transmission | Chassis | Fuel

  1. Sticky Thread Sticky: Head & Intake FlowCharts

    You can thank cjriojas for creating these. Head Flow Chart Intake Flow Chart

    Started by ducky‎, 07-19-2011 04:48 PM
    afr, heads, intake, ls1, ls6, ls7, patriot, ported heads, prc oem, ssr 90, trick flow, truck, vic
    • Replies: 9
    • Views: 13,322
    07-28-2011, 05:35 PM Go to last post
  2. Sticky Thread Sticky: HOW TO rebuild a T3/T4 turbo

    Ok after i got my turbos running i had oil blowing out of both inlets so i knew it was rebuild time. I made a few phone calls and every one wanted...

    Started by MidnightRider‎, 09-03-2009 03:15 PM
    2 Pages
    1 2
    • Replies: 18
    • Views: 28,024
    12-09-2009, 01:39 AM Go to last post
  1. Headers and Y-pipe for 2006 1500HD 4X4?

    Hey everyone. So my 2006 GMC 1500 HD Crew Cab 6.0 rusted through a spot in the factory y-pipe. Truck has a 12" CST lift. Transmission rebuilt with...

    Started by iowackers‎, 02-25-2022 03:59 PM
    • Replies: 0
    • Views: 2,605
    02-25-2022, 03:59 PM Go to last post
  2. LQ9 pistons for LQ4. Floating Pistons on pressed rods. Help.

    I have an 03 LQ4, and would like to put in a set of cheap LQ9 flat tops, but the rods in an 03 LQ4 have press for Pistons, and all the LQ9 pistons...

    Started by JamesTheGreat‎, 02-04-2022 09:04 PM
    • Replies: 0
    • Views: 1,432
    02-04-2022, 09:04 PM Go to last post
  3. 5.3L build advice

    Hello, I just received a used Chevy 5.3L Vortec engine (LM7) out of a 2003 Silverado. Everything on it is stock at the moment and I would like to...

    Started by bkspear‎, 01-13-2022 12:47 PM
    • Replies: 0
    • Views: 1,575
    01-13-2022, 12:47 PM Go to last post
  4. NNBS Hydroboost swap

    As far as I know, this has not been done. I will be attempting the swap in the next few days and will keep a nice record of how it's done so others...

    Started by pl4yboy‎, 06-12-2012 01:56 PM
    3 Pages
    1 2 3
    • Replies: 22
    • Views: 12,188
    01-01-2022, 07:24 PM Go to last post
  5. need help 799 or 243

    so im new to this and trying to build my motor right. i have a 5,3 with 799 heads. im pulling the motor to put in LQ4 block bored 30 over forged...

    Started by jmorton‎, 01-28-2021 07:43 PM
    39 Pages
    1 2 3 ... 39
    • Replies: 385
    • Views: 22,171
    12-13-2021, 10:02 PM Go to last post
  6. FUEL PUMPS// E85 replacements

    OK here goes.. why not replace the stock 2004 gmc5.3 pump witha E85 pump to get more flow right..afterall E 85 needs more flow for given HP! ...

    Started by tnbubba‎, 06-27-2020 11:22 AM
    13 Pages
    1 2 3 ... 13
    • Replies: 125
    • Views: 9,761
    12-13-2021, 11:41 AM Go to last post
  7. might need to check this out

    How do I move a thread from pics vids to here? I'm going to need technical input and suggestions in this super budget build beast lol....

    Started by mercuno‎, 10-04-2019 09:06 PM
    • Replies: 1
    • Views: 4,882
    12-13-2021, 02:58 AM Go to last post
  8. Rag joint elimination, who's done it?

    I got tired of my sloppy steering and tore apart the steering shaft. Originally I was going to install a U-joint on the stock shaft like described in...

    Started by Cardot60‎, 07-08-2015 08:27 PM
    • Replies: 3
    • Views: 3,484
    12-13-2021, 02:55 AM Go to last post
  9. american racing headers 2500 Silverado

    I talked to arh today. They told me they didn't have headers for my 2004 2500 Silverado 4x4. They said the headers would fit but the mid pipes...

    Started by stealthperf‎, 03-06-2015 09:15 PM
    • Replies: 2
    • Views: 3,374
    12-13-2021, 02:53 AM Go to last post
  10. what kida power?

    going to be getting a new motor for the truck the 5.3 is on its way out... heres what im thinking lq4. 317 heads. may have them cleaned up see...

    Started by darnie1987‎, 08-05-2015 12:34 PM
    • Replies: 7
    • Views: 5,685
    12-13-2021, 02:52 AM Go to last post
  11. 4.8 questions

    Hey guys, about two months I purchased a 05 Silverado 1500 ext cab 4wd with the dreaded 4.8. Was kind of in a bind and needed a vehicle or I would've...

    Started by ndurkish‎, 11-01-2015 05:57 PM
    • Replies: 3
    • Views: 3,889
    12-13-2021, 02:50 AM Go to last post
  12. Running E85 on a 2009 GMC sierra 4.8

    Haven't been able to find information on weather i can run E85 or not on a 2009 GMC sierra 4.8. In HP tunersit does have a section for flex fuel and...

    Started by Steved350‎, 04-12-2021 03:38 PM
    22 Pages
    1 2 3 ... 22
    • Replies: 219
    • Views: 42,395
    12-13-2021, 02:49 AM Go to last post
  13. Cam suggestions

    So I am in the middle of doing a 6.0 lq4 swap into my 95 k1500 and am looking to do a cam while I have the motor out. It'll be a first as far as...

    Started by Smitty1021‎, 12-21-2015 06:30 PM
    • Replies: 2
    • Views: 3,382
    12-13-2021, 02:47 AM Go to last post
  14. Tci 399754 flexplate ls1 engine to 4l80e

    Hi Guys I have a tech ? I purchased a TCI flex-plate for my truck after i found out that my stock one is cracked. here is a few details on my...

    Started by jaysonolson‎, 01-01-2016 04:43 PM
    (tci)
    • Replies: 2
    • Views: 3,882
    12-13-2021, 02:46 AM Go to last post
  15. 2013 4.8 build

    I have a 2013 Sierra with a 4.8L. I have long tube headers ypipe back exhaust as well cold are intake and a tune right now but I want more power I...

    Started by Kyle15‎, 01-12-2016 11:40 AM
    • Replies: 3
    • Views: 3,526
    12-13-2021, 02:44 AM Go to last post
  16. 408 NA build

    Well I made it to the track last fall with my 6.0 obs rcsb truck ran good went 12.30 at 110 current set up is a stock lq4 with shaved .030 243 heads...

    Started by fabunlimited‎, 01-26-2016 07:26 AM
    • Replies: 2
    • Views: 3,162
    12-13-2021, 02:43 AM Go to last post
  17. Headers for OBS swap

    Hey everyone. I wasn't sure if this should go in the performance or conversion swap section so if this isn't where it belongs feel free to move it. ...

    Started by borahshadow‎, 03-25-2015 07:02 PM
    • Replies: 6
    • Views: 9,916
    12-13-2021, 02:41 AM Go to last post
  18. Brake options on an OBS.

    I keep hearing rumors that the spindle from a NBS (6-lug) can be swapped into an OBS to facilitate bigger brakes on an OBS. Cant seem to run them to...

    Started by ccreddell‎, 09-30-2010 04:46 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 15,232
    12-13-2021, 02:40 AM Go to last post
  19. 2010 Sierra 5.3 cam advice

    Hey guys, just picked up a 2010 Sierra with the all aluminum flex fuel 5.3. I'm looking at doing the DOD delete and a cam with supporting mods. My...

    Started by 93ecss‎, 02-23-2016 08:20 AM
    • Replies: 1
    • Views: 3,179
    12-13-2021, 02:38 AM Go to last post
  20. LQ4 intake swap for a 4 bolt 90 mm TB

    Was thinking of using a 90mm (actually 88mm) throttle body off a newer 6.0 & 6.2 truck engine with the 4 bolt pattern but my stock intake is for the...

    Started by genXhunter‎, 04-07-2010 09:52 PM
    15 Pages
    1 2 3 ... 15
    • Replies: 144
    • Views: 30,155
    12-13-2021, 02:38 AM Go to last post

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