Gear Drives SUCK!!!!
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Gear Drives SUCK!!!!

  1. #1
    Member NeverLiftMotorsports's Avatar
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    Default Gear Drives SUCK!!!!

    I put a gear drive in my 460 as i was rebuilding it and thought it was a good idea. But hell no it wasnt. When I started it, it sounded good and ran good I thought. Had a 750dp carb on it and at about 2500 rpm it was acting funny. Like it was pulling too much fuel. Put on a 500cfm 2bbl and same thing. Had to get it in the water to check out everything else. Went out and same shit. 2500 and wouldnt do anything just poping and misfiring. Took it home and tried to find a problem. Changed the coil, tried another carb. I started thinking about what was different since i rebuilt it. The only thing different was the piece of crap gear drive. It came with a rebuild kit I bought. I pulled the motor apart and it was the problem the dog bone took a crap. the clip on the small gear broke. The pins wore the holes out on the dog bone. Im glad I took it apart that would have been all kinds of bad if I had it out and that thing broke. Never again will I use a gear drive. Tony

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    Senior Member TwinTurbo540's Avatar
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    So if a piston ring broke right after building your engine would you quit using them as well?? My point is sometimes shit happens, you cant just claim that all gear drives suck now because yours failed... Maybe something happened to it durring shipping, installation, manufacturing error, etc... We run a gear drive in a 526 BAE set up in a pro mod vette I wrench on and it works great at 9,000rpm and 2500hp...

    Glad to hear it was nothing major!

    Travis
    I like my women like I like my boats......Fast and ready to get wet at all times!!

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    Member NeverLiftMotorsports's Avatar
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    I know not all are bad. It just sucked that happened. I am glad that nothing bad happened and it was a perty easy fix. Cant wait to get on the water again.

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    Senior Member nosfomoco's Avatar
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    I think they are perfect for a 1977 Elcamino with a stock 305 and rear sky jacker air shocks! Oh ya, and Flow master mufflers!
    1978 Eliminator Sport Cruiser 20.5ft BBF 460!

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    Member NeverLiftMotorsports's Avatar
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    right on. Might be good in my stock 302 in my 65 ford falcon station wagon.

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    Senior Member nosfomoco's Avatar
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    Quote Originally Posted by NeverLiftMotorsports View Post
    right on. Might be good in my stock 302 in my 65 ford falcon station wagon.
    I think it would be mistaken for chevy nova wagon if you do that!
    1978 Eliminator Sport Cruiser 20.5ft BBF 460!

  9. #7
    Member NeverLiftMotorsports's Avatar
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    that would suck. I like the falcons a lot better.

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    Red Blooded American The Doctor's Avatar
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    Quote Originally Posted by nosfomoco View Post
    I think they are perfect for a 1977 Elcamino with a stock 305 and rear sky jacker air shocks! Oh ya, and Flow master mufflers!
    They are perfect for these as well:

    The best things in life aren't things!

  11. #9
    Member NeverLiftMotorsports's Avatar
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    That thing is bad ass. My little stock 460 didnt like it and ate it.

  12. #10
    Red Blooded American The Doctor's Avatar
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    We got hundreds of passes on a single gear drive. I'll admit we almost exclusively use Jesel belts today for a variety of reasons but Pete Jackson gear drives don't scare us.
    The best things in life aren't things!

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    Village Idiot fc-Pilot's Avatar
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    I will jump in and throw in a little disclaimer for the Doctor. His gear drive was carefully setup to make sure the clearances were perfect. Also, many of the inexpensive geardrives today are poor at best and I would not trust them on my lawn mower. Now, the higher end gear drives such as the Milodon or the type that you would find one TwinTurbo540's promod are totally different and should be viewed as quality pieces that can definitely take a beating.

    Paul (the Doctor's son)

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    Default 20+ years

    We've ran a Milodon gear drive in the PS boat for over 2 decades. Zero problems, zero. All I've done is change the idler bearing twice over the years, and re new the Torrington bearings every couple of seasons.....I should note it is not a "dog bone" type unit, the idler is mounted in the timing cover...Ray
    LOUD BOATS SAVE LIVES

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    Senior Member propless's Avatar
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    Quote Originally Posted by fc-Pilot View Post
    I will jump in and throw in a little disclaimer for the Doctor. His gear drive was carefully setup to make sure the clearances were perfect. Also, many of the inexpensive geardrives today are poor at best and I would not trust them on my lawn mower. Now, the higher end gear drives such as the Milodon or the type that you would find one TwinTurbo540's promod are totally different and should be viewed as quality pieces that can definitely take a beating.

    Paul (the Doctor's son)
    I think this is the key statement in this thread.

    Just out of curiosity I bought one of those cheapy gear drives for my old 460 when it was apart for a cam change. What a POS !!! I followed the destructions that came with it and no matter what I did that thing never looked right/safe on there. I took it back off and filed it in the trash.

  16. #14
    Senior Member Ahsumtoy's Avatar
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    I've used Donovan gear drives for years, no issues....

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