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  1. undy

    Oil pressure gauge maxed out?

    ...failed oil pressure sending unit.
  2. undy

    Will Cast 241 heads fit???

    Another thing to consider... the 241s have a larger combustion chamber size (by 5 CCs +/-). You are going to lose compression which will help to kill your new cam, power and torque. You'll need to have your machine shop cut the heads to keep your compression up. Your machine shop should be able...
  3. undy

    Will Cast 241 heads fit???

    No Z06 till 2001 and they were LS6s. You just have a set of run-o-the-mill LS1 heads that came on Vettes, Camaros and Firebirds/T/As. The heads you already have are probably better.
  4. undy

    400HP to the wheels in a 5.3 - heads, cam, FAST intake

    What are the SAE corrected numbers??
  5. undy

    Those of you with Current Denali / Escalades

    I average around 15 mpg combined on my 13 Denali. The direct injection 6.2 in the 15 should be a bit better.
  6. undy

    Header Options

    Apples 'n oranges. The ARH headers run merge collectors and will out perform the Dyno Techs hands down...
  7. undy

    Newbie from Va Beach

    Hi Mike! I'm from Va Bch too, Red Mill area. I bought a 13 Denali a year ago and couldn't be happier with it. Dave
  8. undy

    Header Options

    Don't waste your money on shorty headers, nothing to be gained. If you don't want to modify your exhaust for longtubes then leave it alone.
  9. undy

    Oil sending unit?

    There's multiple posts all over the web about repeated failures of the OP sending unit. Some people have replaced theirs 2 and 3 times. Mine went on my Z06 and I modded the install so if it fails again it'll take 2 minutes to replace. The fittings and hose ran me $50 bucks from Jegs. Now it...
  10. undy

    your 1/4 mile time with your 07+ with mods

    10.6... Oh, 'scuse me, that's my 07 Z06:rotflmao:
  11. undy

    Stroker crank in a 2009 Yukon Denali

    Torque is 620 flywheel, 541 (SAE) at the tires. I have over 500 lb ft at the tires by 3300 RPM. It's not a top-end cam. It's real HEAVY on torque for the street. 10.6X with a 1.55 60 ft time at MIR dragway. Sorry OP... It's not about me. Back to the regular channel programming.
  12. undy

    Stroker crank in a 2009 Yukon Denali

    ...sounds like a good plan! It should be a beast. Here's my 640hp LS7 in my Z06 that I built.
  13. undy

    Stroker crank in a 2009 Yukon Denali

    Add pistons to the list. With a stroker crank you move the piston pin location up in the piston (among other things) which requires new pistons. You've underestimated costs. You need to add at least another $1500+ to the budget.
  14. undy

    Sell Tahoe for Denali?

    We love our new AWD 2013 Denali. Tons of power and some real sweet options. We came from a 2011 Acadia Denali and haven't look back once. Must say though, we do miss the Acadia's HUD.
  15. undy

    From the Adam's Detail Studio: 2014 Corvette Stingray in Lime Rock Green

    Too slow, IMO... I'm waiting for the supercharged Z06 with the blown LT4 to to debut next month at the Detroit Auto Show. FWIW, my C6 Z06 produces 640 FWHP (normally aspirated) and the only way it gets replaced is for more HP...
  16. undy

    What other vehicles occupy your drive/garage?

    I just ran the Z06 at MIR (Maryland Raceway) several weeks ago and ran a 10.69 @ 128.49. Time for a stouter cam and a 9 second time slip. Not too bad for the grocery getter. I'm lucky number 13.
  17. undy

    Brown sludge in engine

    Time to jerk the engine for a tear-down and rebuild. Anything short of this will be a band-aide at best. It could be a blown head gasket or several other things. As mentioned before, pretty much guaranteed that your bearings are toast with possible crank scoring. If you drive it you're in...
  18. undy

    First time at the track in over 10 years...

    Thanks! Mods: PRC265 heads (milled 0.030"), Katech Torquer 110 cam, 60# Bosch injectors, FAST 102, Nick Williams 102 throttle body, Kooks Headers w/ factory cat-back, 107R Halltech intake w/ bee-hive, Mcleod RXT clutch, an Elite catch-can and M/T ET Street 315/35/17 drag radials on C4 ZR1...
  19. undy

    First time at the track in over 10 years...

    I took my 07 Z06 to the drags yesterday at MIR (Maryland International Raceway). There were 10 blown mustangs for every Chebby. I was happy with the results. BTW... I'm lucky number 13, on the left.
  20. undy

    Z07 sting ray

    Not enough azz yet... (too slow for me) Good intell says that the new C7 Z06 will debut at January's Detroit Auto Show. Let's see what it has to offer.
  21. undy

    New yukon Denali 2013

    I've got a new 13 Denali and have not noticed this at all.
  22. undy

    Replacement of bottom end parts

    Sounds like a good plan.
  23. undy

    Replacement of bottom end parts

    I know you probably don't want to hear this... With 230K on the clock you probably have a significant amount of blow-by (worn cylinders/pistons/rings) which is probably blowing oil out your rear seal. Replacing the seal is trying to fix the symptom, not the problem (worn out engine). More than...
  24. undy

    Replacement of bottom end parts

    How many miles on the engine? does it smoke or run bad??
  25. undy

    Supercharger from the LS9 V-8

    You have cathedral intake ports on your LQ4 which will not work with the LS9's rectangular port intake manifold (LS3 design). Look for a different supercharger...

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