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  1. #11
    Join Date
    May 2010
    Posts
    95
    Quote Originally Posted by mickyinc View Post
    Id check what was done to heads. The ls7 is known for dropping valves. Checkout corvette forum
    Yep, Probably original cause of failure.
    Remove anything titanium.
    Nice for race Engines which get serviced (rebuilt) regularly.

  2. #12
    Join Date
    Nov 2016
    Posts
    767
    Cubes gets the boobs and boost gets them loose

  3. #13
    Join Date
    Dec 2014
    Posts
    175
    http://www.superchevy.com/how-to/eng...?fullsite=true

    Further than he wants to go, but note removal of Titanium rods, for Oliver billet. Seems on Corvette forum rebuilds are premium I beam rods, (Callies Ultra I etc), non titanium valve train even for NA.

  4. #14
    Join Date
    May 2016
    Location
    Perth WA
    Posts
    206
    Yeah wow I wouldn't have thought it to be the case but after some reading it def looks like those titanium rods should be swapped out for peace of mind. You may need to throw a bit more cash at it to get it to reliable longevity levels, it might be worth reconsidering your options.

    Still be uber cool to be running a blown LS7 tho, rebuild with premium callies rotating assembly, suitable boost Cam, enjoy for a few years while you save up, then supercharger goes on! That'd be my plan of attack, but yours is probably going to be different.




    VF R8 LS3, Harrop 2300 FDFI, 1⅞ coated headers, 3" catback, 4L reservoir, 3L surge, 575rwhp

  5. #15
    Join Date
    Feb 2019
    Posts
    13
    Quote Originally Posted by ed.harris View Post
    I would do but I would remove the Titanium Rods as they have a shorter run life.
    Search the Corvette forum on LS7 Titanium rods.
    Plenty there to read.

    More cubes are the go
    Has the engine been converted to Wet Sump?
    Hi Ed, the exhaust valves are stainless and it's now wet-sump, cheers Gary
    p.s. thanks for taking me for that run in your beast

  6. #16
    Join Date
    Feb 2019
    Posts
    13
    Quote Originally Posted by SenatorW View Post
    http://www.superchevy.com/how-to/eng...?fullsite=true

    Further than he wants to go, but note removal of Titanium rods, for Oliver billet. Seems on Corvette forum rebuilds are premium I beam rods, (Callies Ultra I etc), non titanium valve train even for NA.
    Thanks mate, read that article a while back when I was "planning" to build the Senator up to around 700rwhp. I'd allocated around $70K for the build and was only a month or so away from pulling the trigger when the new C8 Corvette was announced. As a long-time vette-tragic I placed my $5K EOI deposit and am eagerly waiting. Not surprisingly, the war-office clipped my Senator budget (I think she thought to $0 ) so for now it'll just be NA and pretty stock (other than the exhaust valve replacement to SS, wet-sump & roller rockers). cheers gary

  7. #17
    Join Date
    Apr 2009
    Location
    Keiraville, NSW
    Posts
    1,053
    Any time there is dissimilar metal contact, heat rates and wearing can vary considerably. Prudence and frequent checking is required. Go talk to a metallurgical engineer who is in the engine business for guidance.

  8. #18
    Join Date
    Feb 2019
    Posts
    13
    Hi guys - hurdle #1 is over. Just received "Approved in Principle" letter from DoT. Now just enquiring with a "Recognised Signatory" to help with the next steps which include: 1: Dyno full range report before & after swap. 2: Swept volume test. 3: Engine number confirmation. 4: Emissions equip hasn't been removed. 5: A 5-gas emission test report.

    Will keep you posted, cheers gary.

  9. #19
    Join Date
    Jun 2010
    Location
    Adelaide
    Posts
    2,127
    Active will be able to facilitate your needs - they have the correct equipment and the Engineer availability to tick all your boxes ... provided it’s correct of course
    GR

    Bite off more than you can chew .... then chew like hell to you've eaten it!







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