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  1. Maximus1

    2004-2007 instrument cluster swap

    Is it possible to swap out my 2004 cluster with a 2007 140mph police interceptor cluster?
  2. Maximus1

    Engine cooling problem

    My 04 LT 5.3L starts to overheat when it sits at idle with the A/C on. The only thing I’ve done so far is I installed a dual electric fans that pull a lot more air than the stock manual fan but even with this it still climbs in temperature. The only thing that I have changed to the cooling...
  3. Maximus1

    Major oil loss

    I’m sure this has been discussed before but I wanted to start a new post because my situation I believe is unique. 2004 Tahoe 5.3L with CNC ported 799 heads Ok so I just changed my oil approximately 500 miles ago. So I’m planning on driving a total of 4 hours tomorrow so I decided to give the...
  4. Maximus1

    Coolant bypass hose?

    Other than not heating the throttle body, if I block off the coolant bypass ports will it hurt anything else? I live in Oklahoma and it doesn’t get cold enough for the throttle body to be heated. The metal hose is leaking and it’s cheaper for me to block them off than buying a new metal hose...
  5. Maximus1

    5.3L lean backfire?

    I have a 57’ Chevy pickup with a 5.3L swap and converted to carburetor with the Edlebrock intake and MSD 6014 control box. It’s got flattop pistons and a Howard’s cam .555 lift 267/276 duration. I’m having a backfire when I floor it from a stop. Holley says it a lean backfire. So they suggest...
  6. Maximus1

    16 volts charging 2004 Tahoe LT 5.3L flex fuel

    I measured the alternator voltage at idle and it’s around 16 volts. Should I be concerned? I always thought that normal is around 14 volts charging. Any thoughts on this would be appreciated. Thanks
  7. Maximus1

    Can you ID?

    Can anyone help me identify this rear axle? I know that it’s a banjo style. At first I thought it was a Ford 9” but now I know that it’s not. Any ideas
  8. Maximus1

    1957 Chevy LS swap

    just wanted to post some pictures of my current project. Almost drivable
  9. Maximus1

    Carbureted LS 5.3L

    Thought I’d share a few pictures of my LS build that is going in my 57 Chevy Truck.
  10. Maximus1

    Supercharger or Turbo?

    auhhh!!! The age ol question. Should I supercharge or turbo. Well I finally broke down and bought a Vortech supercharger. I’ve been going back and forth on whether I should or not on my daily driver. And whether I should supercharge or turbo if I do. Here’s my reason for choosing the...
  11. Maximus1

    Finally got her sounding good

    Let me know what you think. Thanks
  12. Maximus1

    GM55 torque converter work on a 5.3L?

    The GM55 torque converter comes from the 4.2L trailblazer. I’ve heard about using this torque converter for the 5.3L 4L60E because of the higher stall 2200-2600 rpm. Has anyone done this? If so is it a direct swap or do I have to change the flywheel as well? 2004 Tahoe with too many mods to list.
  13. Maximus1

    Return style fuel lines identification

    can anyone tell me which fuel line is the feed line and which one is the return line? I’m guessing that the 3/8 line on top is the feed line and the 5/16 line on bottom is the return line. Thanks
  14. Maximus1

    Two piece intake porting

    I bought this two piece intake for my 2004 5.3L. Now there are some very minor outside differences but it will work and supposedly give you more power. Here’s some pictures of mine. I’m nowhere near complete but I was so excited I thought I’d show everyone. You can pick up this intake on eBay...
  15. Maximus1

    Transmission Leaking

    2004 4L60E built to handle approximately 500hp new sun shell booster valve five pinion planetary gears sonnax high strength output shaft etc etc etc. so this is the third time I got my Tahoe back and it’s still leaking under the front of the transmission. They replaced the pump seal and input...
  16. Maximus1

    BUTTON ON THE BACK OF THE INTAKE?

    Does anybody know what this button is for on the back of the intake manifold on my 5.3L?
  17. Maximus1

    5.3L ADJUSTABLE FUEL PRESSURE REGULATOR?

    Does anyone know where I can pick up a adjustable fuel pressure regulator for a stock intake 5.3L LS engine with a return line? I have several upgrades including a 100psi pump and 72lb injectors tuned and ready to go. I just need to raise the pressure to get the full effect of my upgrades...
  18. Maximus1

    DAILY DRIVER 1/4 MILE LEAGUE?

    I thought about trying to start a daily driver 1/4 racing league here in Oklahoma. Kind of a race what you drove to the track. Any thoughts? Dumb idea or not. How could I get it started?
  19. Maximus1

    DBW conversion to cable?

    Has anyone done a drive by wire conversion to a drive by cable? If so, what would be needed to accomplish this? Thanks
  20. Maximus1

    TAC MODULE?

    Pardon my rant: This is probably the most frustrating problem I have ever experienced as a mechanic for the past 20 years. 2004 Tahoe 5.3L L59 Flex fuel engine with a drive by wire setup which by the way the dumbest thing GM ever did and is also the reason for my problem. Yes it could all be fix...
  21. Maximus1

    L76 engine?

    Does anyone know if the GM casting 243 or 799 heads will work on the L76 6.0 engine? I have a set that are milled .030 and CNC ported and I'm looking to upgrade to a 6.0 L from a 5.3L
  22. Maximus1

    TIMING CHAIN QUESTION

    can anyone provide any information about the LS based engines and their loose timing chains. I actually have a L59 engine that doesn't even have a tensionor or dampener or even the threaded holes to install one. I read a popular magazine that said that the reason for the loose chain is by design...
  23. Maximus1

    FASTEST TAHOE IN OKC?

    I'm just curious if I have the fastest daily driver Tahoe or large SUV in OKC? My upgrades include but not limited to: K&N cold air intake Flowmaster exhaust system cat forward and backward BBK 80mm throttle body 102mm summit racing MAF Heddman 1-5/8 headers 60lbs injectors 799 GM...
  24. Maximus1

    REACHING FOR STRAWS

    I have an 04 Tahoe 5.3L Flex fuel. All header tubes read about 400 degrees except for number 6 which is only about 280. I clearly have a misfire. Checked compression and it's at about 150psi. Swapped coils with another cylinder with no results. Swapped injectors with no results. Any idea on...
  25. Maximus1

    INTERMITTENT BATTERY NOT CHARGING

    2004 Chevy Tahoe 2WD LT 5.3L L59 Flex fuel. This is for anyone who is having a intermittent battery not charging display with the battery light on and off. I had this same problem. Battery light goes on and off at random. I first took it to Autozone and had the alternator tested and it tested...
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