Jump to content

Live from the Gen 5 Smallblock unveiling


Zane

Recommended Posts

Posted

Detail of cylinder head

  • Intake/exhaust switched
  • New larger head bolts - M12

 

2012-10-24 09.27.44.jpg

 

intake manifold detail

2012-10-24 09.29.29.jpg

2012-10-24 09.27.44.jpg

2012-10-24 09.29.29.jpg

2012-10-24 09.27.44.jpg

2012-10-24 09.29.29.jpg

2012-10-24 09.27.44.jpg

2012-10-24 09.29.29.jpg

  • Replies 73
  • Created
  • Last Reply
Posted

Tuned exhaust details

2012-10-24 09.31.11.jpg

 

Piston/Rod details

2012-10-24 09.31.46.jpg

 

All new aluminum block

2012-10-24 09.33.08.jpg

 

 

  • Forged crankshaft
  • Polymer coated main and rod bearings

 

2012-10-24 09.31.11.jpg

2012-10-24 09.31.46.jpg

2012-10-24 09.33.08.jpg

2012-10-24 09.31.11.jpg

2012-10-24 09.31.46.jpg

2012-10-24 09.33.08.jpg

2012-10-24 09.31.11.jpg

2012-10-24 09.31.46.jpg

2012-10-24 09.33.08.jpg

Posted

Entirely new "lube system"

 

Note that AFM only seems to work up until 3000rpm

2012-10-24 09.36.20.jpg

 

 

  • New lube system can switch between low and high pressure

 

2012-10-24 09.36.20.jpg

2012-10-24 09.36.20.jpg

2012-10-24 09.36.20.jpg

Posted

More lube stuff, baffles on the rocker covers

2012-10-24 09.39.45.jpg

 

New dry sump oil system

2012-10-24 09.41.02.jpg

2012-10-24 09.39.45.jpg

2012-10-24 09.41.02.jpg

2012-10-24 09.39.45.jpg

2012-10-24 09.41.02.jpg

2012-10-24 09.39.45.jpg

2012-10-24 09.41.02.jpg

Posted

Q&A time.. I'll try my best to transcribe the best answers. Working on a tablet here.

  • Compact engine design essential for euro crash regulations

 

Posted

 

  • Ignition system has quicker response time
  • Running weight increased in mass over previous small block
  • New plenum allows for more even air flow

 

Posted

 

  • Correction, both wet and dry sump systems will be available

 

2012-10-24 09.52.25.jpg

2012-10-24 09.52.25.jpg

2012-10-24 09.52.25.jpg

2012-10-24 09.52.25.jpg

Posted

 

  • Dual equal cam phasing is used for the variable valve timing
  • Final fuel economy needs to be pinned down, better than previous car

 

Posted

 

  • Direct injection not added as a marketing feature, it was added from the start and all combustion designed around it

 

Posted

 

  • Only 2 valves per cylinder
  • First application of direct injection in and ohv engine
  • Gm says this is a commitment to produce V8 engines into the foreseeable future

 

Posted

Thanks Zane. The most interesting thread I've seen in a very long while. Any mention of the transmission they'll be using?

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts
  • Member Statistics

    342,915
    Total Members
    8,960
    Most Online
    ChristopherDobson
    Newest Member
    ChristopherDobson
    Joined
  • Who's Online   0 Members, 0 Anonymous, 1,361 Guests (See full list)

    • There are no registered users currently online
  • Latest Articles

  • Posts

    • Monthly payment is only part of the equation. With today's prices and interest rates, I'd look at the total monthly cost: payment, insurance, registration, fuel, maintenance, and expected repairs. A vehicle that fits comfortably into your budget is usually the better choice than stretching for a higher trim. I've also kept my vehicles longer over the past few years. New cars have gotten expensive enough that driving one for 10+ years, while staying on top of maintenance, often ends up being the most cost-effective approach.
    • 10 Ford and Chevy engines proven to reach 300,000 miles   You may note a common 3K OCI on this list of gas motors. I skipped over the diesels. Dh'O. 
    • Thanks newdude!  By the time manual selection is needed, I'm probably too much of a control-freak to depend on the transmission sensing braking to activate automatic downshifting.  I would be anticipating the situation and already be manually downshifting.   This truck replaced a 2004.5 LLY diesel with the Allison 5-speed.  Putting it in T/H made noticeable differences (when the torque converter locked, upshift points, downshift behavior).  On this 2024 gasser with the 10L1000 I haven't been able to detect much, if any, difference.  Ok, I can never tell now when the torque converter locks up.  But I also don't notice differences in shifting.  For downhills, I've probably already manually downshifted by then anyway.  Since it's also more awkward (than the 2004.5) to engage/disengage I don't even bother.  Or maybe it doesn't really matter with just a 3k lb. camper in the bed?   Thanks also for the list of reasons the charging system might select various voltages.  However, what I am seeing doesn't fall into any of those categories.  It very definitely, and very consistently, rises after coasting/braking.  Maybe not immediately, but not very long after coasting/braking.  Very consistently drops voltage when no longer coasting/braking.  It might also be interacting with the camper battery charging (I might disconnect the camper and see if it changes the charging behavior).  I also need to recheck turning on headlights for when I want to force it to charge the camper.   Another JR, in June I converted the camper to LiFePO4.  Since it's not a good idea to try to charge lithiums directly using truck, I installed a Victron Orion XS DC-DC charger (which BTW is AMAZING!!).  Being cheap, I only had to buy that one item (besides the battery, of course) to do the conversion.  The camper OEM 120v battery charger (only 19 years old and works perfectly) and the truck feed the input to the DC-DC charger (not at the same time).  But I didn't want the camper charger feeding back to the truck so I kept the old separator.  I considered replacing the separator with a 30amp diode but that means more work and might add another 1/2 volt drop.  One thing that surprised me was the voltage drop over the long 10awg wire run, so I can only charge smoothly at 8 amps (because the DC-DC charger is completely configurable).  Another reason I don't want an added voltage drop with the diode.  I might also be a little lazy but all this work is being done under the sink with a small cabinet opening.    
    • apparently CA smog is (or at least was)  checking that the vehicle is using the oem and/or a ca smog approved tune, so I expect you'll fail inspection doing it.
    • yes, leaking exhaust will mess up o2 sensor readings, which in turn messes up fuel trims.
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...