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  1. DonB

    C4 Mufflers

    Great explanation. Thanks. I'd have never realized what causes the drone sound. But now that you mention it,..It makes sense. Even though I never realized it, my boat has twin engines and if they are close in RPM, but not exact, I get the Drone.
  2. DonB

    Two LT1 noises on video. Bad lifter, bad cam lobe or rod?

    Hi woodstockdrift. I was just able to read your post. To answer your question(s), I'd put some more M.M.O. in it and run it till the next oil change. You have nothing to loose and it won't hurt anything. Here's my reasoning: 1.) Your ticking ISN'T real bad. Heck, many, many engines tick...
  3. DonB

    C4 Mufflers

    Thanks a bunch for that review. I was leaning towards the Corsa.
  4. DonB

    Spark plugs

    Normally, I ONLY use the factory recommended A/C Delco Plugs in my G.M. vehicles. Switching to other brands, I've found can cause "heat range" issues. This can lead to a bunch of other things including fuel mileage, efficiency and combustion temperature to name a few. But,..Are you using an...
  5. DonB

    C4 Corvette Rear Glass & Hoods................FREE.........Local Pickup ONLY, NO SHIPPING

    Anybody here that needs anything for their Vette give Steve preference. I've bought from him many times and he is a STAND UP guy. Fair, honest and good parts at a very fair price. Sorry it took so long to comment on this. My C4 project would NOT have worked out so great had it not been for...
  6. DonB

    Rock Chips (How To Prevent Them?)

    When stopped in traffic I don't pull up as close as I normally would to the car in front of me. I normally leave at least 10 feet when I'm driving my Vette.
  7. DonB

    Question: Synthetic versus standard oil

    I use Castrol Syn-blend 10w40. The best of both worlds(and arguments.) Actually a couple years ago O'Riley's was selling off all their stock for $1.50 a quart because Castrol was changing the bottle graphics. COOL! So I helped them out and I bought up 10 cases. I maintain 4 engines...
  8. DonB

    Question: Trasmission shift points

    O.K. What trans do you have? Is it the 4 speed automatic, which is what the conversation with the TV cable is about. Manual transmissions don't have one. It sounds like you have the 4+3 manual. This is a T-10 with an overdrive unit because you mentioned trans and O.D. filler plugs...
  9. DonB

    Question: Trasmission shift points

    It may. That's hard to say(but I doubt it). The TV cable adjusts mainly shift points. Try it. You have nothing to loose... When"s the last time you changed the fluid & filter in the trans.?
  10. DonB

    C4 Mufflers

    The "drone" does get overbearing at times. Like you said, when I have to practically yell at my wife for her to hear me......Although the drone CAN then be blamed instead of my "selective hearing." If you know what I mean. LOL!
  11. DonB

    C4 Mufflers

    Those are actually the ones I was leaning towards. Thanks.
  12. DonB

    85 4+3 3rd gear off throttle stick vibration

    Could the detent spring be worn or broken? I'm NOT familiar with the 4+3, but I've seen worn detent balls and broken detent springs in other transmissions. If it "goes in" easier than the 1-2, I'd look at the springs, etc.
  13. DonB

    Engine Rebuild/Swap Reccomendations Please

    If you haven't thrown the ROD yet,..Don't! Don't drive it! It's usually less-expensive to rebuild your existing engine. That Said,.. I've found Jeggs is very reasonable on performance part prices and quality. To start; Get a complete "rotating assembly," timing chain& gears, oil pump&drive...
  14. DonB

    Two LT1 noises on video. Bad lifter, bad cam lobe or rod?

    What a coincidence! My previous boat was an 18' Mach1 with a 150 Black Max Merc. V-6, 2 Stroke with oil injection. Gosh that boat was quick! I miss it. And yes at times the Merc. was great for "Mosquito control!" Especially the first start-up in the spring to burn out the fogging...
  15. DonB

    Two LT1 noises on video. Bad lifter, bad cam lobe or rod?

    Seafoam is great stuff. I've used it in my boats fuel system in the spring for years. I put Sta-bil in prior to winter storage as well as fresh engine oil & filter. I've never actually used it in a car because I change the oil at a max. of 2500 miles. I normally use Chevron fuel system...
  16. DonB

    Two LT1 noises on video. Bad lifter, bad cam lobe or rod?

    Stealer-ship... kpic? REALLY? Well I NEVER!,...(laughed so hard.) Good one. :cool!: Furthermore, in relation to the O/P,.. Your engine is running too smooth to have a flat cam. If you did, at least one cylinder would be under-powered and the engine would be missing and shaking. Engine...
  17. DonB

    Two LT1 noises on video. Bad lifter, bad cam lobe or rod?

    A scanner will NOT help for "hard" engine noises The ATF is a proven solution. I've been wrenching since late 60's. I used to be a dealer mechanic. Just be sure to change it after a short period as I instructed. Of course you can do as you wish.
  18. DonB

    Hello!

    Welcome to CAC! Good Luck with the new Vette.
  19. DonB

    Two LT1 noises on video. Bad lifter, bad cam lobe or rod?

    Well here goes. The first noise could be a few things, the wop,...wop,...wop, sounds a lot like a bad A.I.R. pump. When mine failed, it was popping out the back of the pump. To check this,.. Briefly take the belt off and run the engine(so the pump doesn't turn). If the noise goes away...
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