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  1. #1
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    5.5L, 670HP, naturally aspirated

    It's more HP than I could use on the street without losing my license, and I'm not good enough to use 670HP at the track. Maybe I could learn with practice

    The Most Powerful V8 Engine Ever (Naturally Aspirated) - 2023 Corvette Z06 - YouTube

    The newest Corvette motor is awesome

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  3. #2
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    I like low RPM torque the 6.2 has way more, the 5.5 has more HP but on the street give me TORQUE

    The 5.5 is a true race motor twin cam short stroke and micro pistons with high compression but stop light to stoplight 6.2
    We have invented the world; WE see

  4. #3
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    Very cool. I saw a Youtube video on it today. All the good stuff. big bore. short stroke. Very Trick dual intake plenum. 4 valve, injector on exhaust valve side, Dual overhead hollow core cams , direct cam contact to finger at valve stem 12.1, 8600 Nice!

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  6. #4
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    Very impressive performance. I wonder if the mercury crew had anything to do with that cyl head design. I recall reading about a dohc mercury ls1 head made for extreme rpm. It’s great to see that GM is pulling out all the stops here and building another bench mark performer. My only wish would have been to have it be 350 cid 5.7L simply for nostalgia. Other wise it’s three thumbs up from me
    Hydrostream dreamin

  7. #5
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    I can't imagine a local dealer having a qualified tech on staff to work on this engine. They must plan on having a travelling pack of service techs to cater to the C-8's.

    83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
    We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
    Rebuild thread:
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    http://www.screamandfly.com/showthre...cs.&highlight=
    Videos

  8. #6
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    Quote Originally Posted by XstreamVking View Post
    I can't imagine a local dealer having a qualified tech on staff to work on this engine. They must plan on having a travelling pack of service techs to cater to the C-8's.
    They will start training techs now, dealer won't be able to sell one without trained tech. Did that with the LT5 ZR1 back in the day.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

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  10. #7
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    I have been looking at them. BUT take list price and add 30K to it.. PLUS WHAT YEAR IS IT??? It is not even 2022 yet? WTF is up with that $hit?

    Sounds like a bunch of broken promises. Me... was looking at the Z06... but now back looking back at late teens 911 Turbo S... #FGM

  11. #8
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    Okay, this is an "I heard" but there was a story, I believe on The Hull Truth, about a guy who bought a C8 and had transmission trouble. Neither the dealer that sold it to him (supposedly C8 certified) nor another C8 certified dealer had the tools/equipment to repair it. I realize that this is probably true with the roll out of any exciting but totally new technology, but has to be frustrating to the buyer.
    Per Rock:

    "Once I bought my first Hydrostream boating changed forever for me."

    Per my hero Instigator:

    "I try not to let common sense interfere w/my boat buying decisions."


    Pat Gent
    cell 954-249-3246
    '78 Hydrostream Vandal (being rebuilt)
    '86 21' Eliminator Daytona, 300 OMC V-8 (Li'l Toy III)

  12. #9
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    Quote Originally Posted by Dave Strong View Post
    They will start training techs now, dealer won't be able to sell one without trained tech. Did that with the LT5 ZR1 back in the day.

    Dave
    That's a joke I remember taking my 2003 C5500 back to the dealer and no one knew what to do with it, the GMC dealer did not have anyone trained to work on it, after a whole day in the shop I got a $480.00 bill telling me someone switched the PTO switch on the dash, I had nothing attached to the transmission PTO It was a electric dump, when the switch was flipped it prevents the RPMs from going over X RPMs, talk about being pissed -off
    We have invented the world; WE see

  13. #10
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    Quote Originally Posted by XstreamVking View Post
    I can't imagine a local dealer having a qualified tech on staff to work on this engine. They must plan on having a travelling pack of service techs to cater to the C-8's.
    Ford's been using engines like this for decades. Plenty of mechanics are familiar with OHC, 4 valve V8's.
    Nothing on this engine is really ground breaking from a mechanics perspective.
    -----------------------
    93 STV Mod VP/MERC 2.5 200
    -----
    The Bible is life's instruction manual.

    Proverbs 4:18-20

    " For a nation that is afraid to let its people judge the truth and falsehood in an open market is a nation that is afraid of its people."
    -- John F. Kennedy 1962

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  15. #11
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    Bottom line

    460 ft tq at 6,300

    650 ft tq at 3600 RPMS which do you want ?

    a street motor or a dyno motor

    I remember the top outboard drag racer in Pro Gas years ago used a Diamond motor

    he sent them the block for a nic job, they did a little tweaking on his ports trying to do him a favor...

    He was forever pissed at them for ruining the best motor in that class, just because a motor makes more HP on a dyno does not translate to a winning drag motor because loosing the acceleration characteristics was/is more important for ET racing.
    We have invented the world; WE see

  16. #12
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    There was a porosity issue with the early ones in the transmission case. It leaked and is unrepairable ( needs replacing ) which has been exacerbated by the covid supply chain issues
    Hydrostream dreamin

  17. #13
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    Dealers rebuild Transmissions ? really maybe in the 60's or 70's

    When It comes to transmissions I like factory rebuilds unless it's older versions.
    We have invented the world; WE see

  18. #14
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    Quote Originally Posted by CUDA View Post
    Dealers rebuild Transmissions ? really maybe in the 60's or 70's

    When It comes to transmissions I like factory rebuilds unless it's older versions.

    Did lots in the 90's when at GM.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

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  20. #15
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    Do any 10 speeds?

    like I said older transmissions yeah, just had a 4L80e in a one ton bucket diesel, the guy is 70 years old still 3200.00 because of hard parts, he don't play with wore out chit.
    We have invented the world; WE see

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