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  1. JDopirak

    What does your oil pressure run at? Cold vs. fully up to temp?

    40psi idle 50-60psi highway/normal driving under 3500rpm and 96psi wide open. But I have a hi volume/high pressure pump. My coworker has stock 10 Tahoe hes at 20psi idle 40-45psi on highway/normal drive and 60psi wide open.
  2. JDopirak

    Ls3 shortblock

    Towing power mostly.
  3. JDopirak

    Ls3 shortblock

    I sent a set of 243 takes off heads in and they just milled them .005 I did not tell them to milled them to any specific measurements. No spec sheet just the one they have online for there stage one porting. I have contacted the place who has tuned my truck twice a few times today asking...
  4. JDopirak

    Ls3 shortblock

    I already run 93 daily as that is what my truck was tuned on. My heads where the stage one porting from texas speed so I'm basing my numbers off there charts. And no boost. I'd love to break 400whp tho. As far as I know stock dimensions other then 20 over and I'm going to buy a bridge and...
  5. JDopirak

    Ls3 shortblock

  6. JDopirak

    Ls3 shortblock

    So I got the short block home it has been bored 20 over. It measured 4.085 cylinders. My heads are cnc ported so looking at the flow charts my heads flow almost exactly the same on intake side off by like 4cfm and they flow 25ish better on exhaust side. So they will act like stock ls3 heads...
  7. JDopirak

    Ls3 shortblock

    Idk how to delete post but I bought the shortblock.
  8. JDopirak

    Ls3 shortblock

    Hello, So the same guy I bought my 243heads from "who owns a local ls junkyard" has a freshened up ls3 shortblock for sale bored .05 over , new bearings and pistons for $2500. I'm thinking about buying it and slapping my top end on it. My top end is cnc ported 243 heads and my stock truck...
  9. JDopirak

    Cam/headers for 5.3 build?

    I have gibson ceramic coated shorty headers , 212/218 texas speed cam, new rockers with Michigan motorsports truinon upgrade, texas speed hardened pushrods and 243 prc ported heads. And I will say you hear alot of exhaust pinging/valve train noise with headers. Almost sounds like an exhaust...
  10. JDopirak

    Exhaust cut outs.

    Why I gotta hear the cam? Because I'm still a car guy and like to hear the thump thump of the cam, What did you think I installed a cam just for power gains!!?? And as stated before I like it to be mostly quiet most of the time aka sleeper.
  11. JDopirak

    Exhaust cut outs.

    Magnaflow muffler alot of people use 12589 or something like that, Gutted 3rd cat and slp resonator delete. I think it's perfect for daily and running with family. But I do those times when I'm alone headed to work or store and I wish it sounded like my old straight pipe camaros and mustang's...
  12. JDopirak

    Exhaust cut outs.

    Pretty basic questions. Who has electronic cut-outs, How long have you had them? Do they leak? What brand? I'm heavily looking at qtp cut-outs I've seen alot of good reviews on them. I can barely hear my cam with my exhaust but I dont want to have to screaming all the time as its a family...
  13. JDopirak

    Question about HD tow package?

    When you pick up the truck double check that you have an external trans cooler, My 09 Yukon has the 3.42 gears and "towing package" but for some reason it didnt have an external trans cooler so i added one.
  14. JDopirak

    Walk around after cam and heads

    I put another 450 miles on it and no noises so far. Its not my daily so it takes me awhile to put miles on it. I use it when i pull my trailer mostly and i take it to my second job on Saturdays that's only 3 miles up the road. Ive done a few wot with hp tuners logging it hits 95psi and never...
  15. JDopirak

    Oil Pressures with Meiling pump

    So i finally got a WOT data log and it looks like at 6k im hitting 95psi oil pressure. Just an update incase people are curious.
  16. JDopirak

    Walk around after cam and heads

    Wont know till I open up the motor and i honestly want to put that off as long as possible because its a pain getting the motor out by your self. If it was in my mustang or something similar i would have already pulled it.
  17. JDopirak

    Walk around after cam and heads

    Update. 1k oil change there is still metal dust "needle point sparkles" in oil, I took the filter apart and found 13 ball point pen flakes in the paper filter. Zero noises its quieter then before top end build actually. So im just going to continue to run it untill it becomes a problem .
  18. JDopirak

    Towing capacity

    A local place called "The Engine Shop" near philly.
  19. JDopirak

    Towing capacity

    Next time i tow ill have the dash cam running or maybe the gopro facing cluster and ill post it on youtube so you can see what im talking about. I do value all of your input ive learned alot. Ive been towing a 5x8 for years with my forester so owning and towing with a huge car trailer like...
  20. JDopirak

    Towing capacity

    Im having a 6.0 built so that should help a little.
  21. JDopirak

    Walk around after cam and heads

    Yea.... my wife is pissed. She yelled at me and said you knew better and you basically wasted 4k with parts and tune plus a few late nights. Shes the one who said the next motor for the yukon your taking to a engine shop. I said you sure we are looking at $2600ish plus another tune "$500". She...
  22. JDopirak

    Walk around after cam and heads

    Yeah your right. Reusing the stock rod bolts because i was short on time and didnt plan on taking crank out when we did heads and cam is what i think is causing the metal in my engine right now so its on borrowed time. Again i should have stuck to my gut. On the bright side in a month or...
  23. JDopirak

    Walk around after cam and heads

    I know they are tty and so does he. I guess there is alot of people who do budget ls trubo builds and they reuse head bolts all the time and just copper spray the headgaskets and reuse them as well and apparently they dont have issues.
  24. JDopirak

    Walk around after cam and heads

    Running... and yes im assuming oem bolts idk if the motor was ever taken apart before i got it.
  25. JDopirak

    Walk around after cam and heads

    He took no blame, Said we did everything right and nothing he did or reccomend we do would have caused failure and he doesnt understand how it happened. I took blame as i should have stuck with my gut feeling. But after some back and forth txt we havent talked in almost a month now. Hes one of...

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