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cobra3073

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Posts posted by cobra3073

  1. Posted · Report reply

    I was contemplating using those on my FE as well. How do they sound? I had Magnaflows before but was wanting a more aggressive note.

    It has been my experience that the sound really depends somewhat on the cam characteristics and the type of pipes, i.e., "X" or "H" pipes. In my case, I have the Comp 282S, a solid lifter grind, with the "X' pipes.

     

    I will try to post up a short video of the sound in the next day or so.

     

    BT

  6. Posted · Report reply

    I Installed ADDCO's 1 1/8" sway bar on myl 428CJ '69 Mach 1...was supposed to fit without issues but I had a problem with the oil filter not fitting because of the sway bar..

     

    I resolved it by going to dual remote oil filters.

     

    You might want to give ADDCO a call and state your problem. I understand they are pretty customer oriented.

     

    Good Luck!

     

    BT

  7. Posted · Report reply

    Would not the ratio difference be the same no matter what the speed?

    As noted by Barnette468 the "gear" ratio would remain the same, however if you are referring to RPM, it would change at a different (higher or lower) speed.

     

    You would use the speed you are at going through the traps. You can validate my manual figures for the 70 series tires and the 60 series tires by going to the calculator in this link

     

    http://www.csgnetwork.com/multirpmcalc.html

     

    Your 70 series tires are 25.90" in diameter and your 60 series are 24.20.

     

    As you will be able to see, the gained RPMs (when using the 60 series rather than the 70 series)tires going through the traps will be lower at lower speeds.

     

    For the 1/8 mile racing, you really need deep gears to get the best results unless your are bracket racing, IMO.

    BT

  8. Posted · Report reply

    Well sort of.  Let me explain; spin is not a problem can get plenty of spin with either tire.  The 428 CJ puts down plenty of torque even with the 3.25 gear.  A friend did some mystical math and tells me the smaller Drag radial combined with the 3.25 gears results in a seemingly 3.45 rear end.  Make sense ?  Anyway I'am going to give the drag radial a try and see what happens.  Thanks,  Brian

    The difference diameter of these two tires ( 24.20" Versus 25.90") will give you approximately 300 point jump in RPM at 100 MPH.

     

    The RPM formula is what you are working with here to see the results. The formula is:

     

    RPM = MPH X Gear ratio X 336 divided by tire size

     

    In your case for the 70 tire using hypothetical 100 miles at the end of your run would be:

     

    100 X 3.25 X 336 = 109200 divided by tire size of 25.90 = 4216.2 RPM at the end of the run

     

    Going with the 60 tire using hypothetical 100 miles at the end of your run would be :

     

    100 X 3.25 X 336 = 109200 divided by tire size of 24.20 = 4512.39 RPM at the end of the run

     

    If you substitute the 3.45 gear into this equation (using your 70 diameter tire), you will see:

     

    100 X 3.45 X 336 = 115920 divided by tire diameter of 25.90 = 4475.6 RPM

     

    Of course, You can always go to one of the online calculators and key in the information if you don't like doing it manually. LOL

     

    ...my $.02

     

    BT

  10. Posted · Report reply

    Finally have most of the front end done to include the install of the shaker.

     

    post-16376-0-85563000-1462388877.jpg

     

     

    post-16376-0-53950700-1462388954.jpg

    ood

     

    post-16376-0-79739700-1462388996.jpg

     

     

    Still doing some fine tuning with the front end, i.e., hood locks, 428cj emblem on shaker, ect.

     

    Will then be proceeding to adding spoilers (front and rear) and the rear window slats.

     

    ...the journey continues.

     

    BT

  21. Posted · Report reply

    FIRED IT UP FOR THE FIRST TIME TODAY!!

     

    It sounds good and STRONG with no leaks or other viewable issues. Cam survived the break-in and it starts quickly.

     

    Unfortunately, I was too excited to take a video of the initial start. We will be putting the fenders and hood on over the next week and do the final buffing of the paint. Here are a couple of the pictures that were taken today.

     

    post-16376-0-83110300-1460147542.jpg

     

    post-16376-0-40376200-1460147616.jpg

     

    ...more to come!

     

    BT

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  25. Posted · Report reply

    Well, I received the new radiator and posted up a couple of pictures in the "Technical" forum showing the differences between the two radiators that I was considering for this application. Thought I would post the pictures here also.

     

    attachicon.gifRadiator.2.JPG

    The one on the left has more of a stock appearance.

     

    attachicon.gifRadiator.4.JPG

    The one on the right has more of the stock appearance.

     

    As you can probably see, one of them has more of a "stock" look than the other as it pertains to the top and bottom of the radiators. This means there shouldn't be any problems with utilizing the stock brackets. I will be using the stock appearing one.

     

    Incidentally, the "Condenser" issue I mentioned in the previous post has to do with the after market Vintage Air AC that I have installed.

     

    I will post pictures once I get the radiator installed.

     

     

    BT

    Here are the latest pictures of the AutoCity Radiator install that I have also posted under the "Aluminum Radiator" thread over on the "Technical" forum:

     

    post-16376-0-35582400-1459294248.jpg

     

    post-16376-0-66884600-1459294294.jpg

     

    post-16376-0-79111900-1459294332.jpg

     

    Getting close to firing the motor up. After which we will be putting on the fenders and hood.

     

    BT

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