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  • SuperBuickGuy
    replied
    Originally posted by Loren View Post
    Is that it?

    There's two frame mounts each side in the cowl area to look at if there's shaking. It's all sheet metal under the 'glass through there, windshield, door posts, rockers.
    no, that's a friend's car that I've driven.... I told him that if he dies, I want it

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  • Loren
    replied
    Is that it?

    There's two frame mounts each side in the cowl area to look at if there's shaking. It's all sheet metal under the 'glass through there, windshield, door posts, rockers.
    Last edited by Loren; December 21, 2021, 02:50 PM.

    Leave a comment:


  • SuperBuickGuy
    replied
    Originally posted by fatguyzinc View Post
    coincidentally, have you ever ridden in a ragtop C3? a friend of mine, leon has a couple.
    one 327 and one 454, both 4 speeds. after a ride id never own one personally, the
    amount of 'cowl shake' driving over even a semi decent surface was frightening, im
    amazed the windshield didnt crack it was moving so much L/R.......

    apparently the birdcage adds a ton of stiffness. makes sense, as most convertables
    had unique frame stiffeners to make up for lack of body strength. there really isnt
    any body strength in a glass car, so i dont know if there were different frame stiffeners
    for the vettes. just something to think about, that by the time you get it to stop shaking
    the windshield to pieces, it may negate any weight savings...think id do an aluminum
    block for the weight advantage before i ran a ragtop C3 myself.....

    course thats easy to say when its coming outta your pocket!
    you mean, like this one?



    keep up, my friend, keep up

    Leave a comment:


  • fatguyzinc
    replied
    coincidentally, have you ever ridden in a ragtop C3? a friend of mine, leon has a couple.
    one 327 and one 454, both 4 speeds. after a ride id never own one personally, the
    amount of 'cowl shake' driving over even a semi decent surface was frightening, im
    amazed the windshield didnt crack it was moving so much L/R.......

    apparently the birdcage adds a ton of stiffness. makes sense, as most convertables
    had unique frame stiffeners to make up for lack of body strength. there really isnt
    any body strength in a glass car, so i dont know if there were different frame stiffeners
    for the vettes. just something to think about, that by the time you get it to stop shaking
    the windshield to pieces, it may negate any weight savings...think id do an aluminum
    block for the weight advantage before i ran a ragtop C3 myself.....

    course thats easy to say when its coming outta your pocket!

    Leave a comment:


  • SuperBuickGuy
    replied
    and they say converting to 5 speed is hard

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  • SuperBuickGuy
    replied
    Originally posted by fatguyzinc View Post
    bummer....oh well, i tried.

    I appreciate the 411

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  • fatguyzinc
    replied
    bummer....oh well, i tried.

    Leave a comment:


  • SuperBuickGuy
    replied
    Originally posted by fatguyzinc View Post
    On my prior C3, I went through all of those inserts. Fact is, I still have them. The twist one is an utter waste of money. The 'disk' one, kills power but it does quiet it down (and I still have it too).... As I've mentioned, the next C3 I'll have side pipes but reasonable noise but It will be more a copy of the GM system where the pipes went through 360 degrees of direction change.... I might even do something with these sidepipes after 2022 racing is over. I think the super long primaries are dumb and rob hp to boot. Something in a tri-y into a single oval, then turn down the side with maybe a honeycomb cat followed by what I'm trying now..... that gives me space for a turbo style if I have to (or disks) but gets scavenging back

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  • fatguyzinc
    replied
    https://www.carchemistry.com/

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  • SuperBuickGuy
    replied
    Last year, I couldn't run at Portland Raceway because my car is a bit louder then the 105 db that the track allows. Just a bit - 2 db. This is the fix
    should get me under 100 db at full song - with no attendant loss of performance... we will see



    likely the configuration


    10" overall, according to my calculations, I only need 8"


    roughly here


    but much playing with these is going to happen between now and Optima in July. I may reduce the length of the inserts or simply change them to a different style... I do know that PF3 will have long tube headers that have much shorter primary tubes then lined sidepipes.... worst case is I put a diverter on the tip or make the tips removable so that the exhaust doesn't aim at the measuring device

    Leave a comment:


  • SuperBuickGuy
    replied
    onward
    had to buy new ends because I'm sure I tossed the vacuum stuff years ago

    install bumpers

    grind clean

    take springs off

    the controller needed to go on an inner fender that no longer exists (and the alternator is now on the opposite side of the motor

    not sure what their plan was on wiring, but I shortened some, lengthened others


    hiding wiring

    Leave a comment:


  • SuperBuickGuy
    replied
    I've complained before that people take my ideas without even a thank you. That's fine, I like they did, now I can take their updates to my design and help a few around here save some dollars

    C5 motors and controllers
    they put the motor on the opposite side - which created its own issue of having to build back the part I cut out

    tomorrow, wiring - my car's alternator is on the opposite side as stock - but even so the wiring needs quite a bit of mods. Shop was 26* tonight so I figure I can get more proactive heating tomorrow and perhaps have feeling in my fingers while I wire.

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  • SuperBuickGuy
    replied
    time to fix the lights....
    basically it's what it is now but someone figured out the controller for C5s

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  • silver_bullet
    replied
    Originally posted by Deaf Bob View Post

    Easy solution: throttle limiter
    Careful, we have a comedian in our midst

    Leave a comment:


  • SuperBuickGuy
    replied
    Originally posted by fatguyzinc View Post



    wasnt that was so they could easily get a roll cage inside ?
    convertibles are lighter... granted, there won't be much that came off the GM assembly line with the proposed car..... so there is that.

    Leave a comment:

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