81 Trans Am 500 Caddy

Discussion in 'Big Block Cadillacs' started by PJ McCoy, Jul 23, 2015.

  1. Monzallac 425

    Monzallac 425 Active Member

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    13:73 in the quarter , it's in the post on "post your build"? Never drove it on the street but never overheated with a small aluminium radiator, that plate riveted on the back of the water pump, 160* termostat , bottle of water wetter, and the Ford Taurus 2 speed fan even in 110 * racing heat.

    With the original Pontiac built 151 4 speed ,16:86 ran Was like 20:?? Stock in the quarter , did the best in NY - 4th place for a season , did better there cause they had the regular tree lights, not the Led tree that AZ had.

    Put in the 425 cause the 151 could not compete in the class in Az and it didn't like the heat. Did the best there 17th place for the season.( Made the cut for the divisional finals in Las Vegas but didn't go)


    NY season : every Sunday April to October

    AZ season : 7 races total Feb -June

    Flat towed to all races except early in the early 90's when starting to go racing again.

    Last raced before in 77 with the 62 Belair and the 62 Impala wagon.

    Doug in P.R.:cool:
     
    Last edited: Apr 4, 2019
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  2. richie49

    richie49 Active Member

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    P.j. McCoy
    Have you made any more progress on your T A
    Richard richie49
     
  3. PJ McCoy

    PJ McCoy Well-Known Member

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    Richie thanks for checking in. I have not. I installed the T.C. got the T/A legal for the road and never drove it after the initial T.C. test drives. I've had some serious family health emergencies that came back to back. This year is one I look forward to ending.
    Its sad because I was so close to finishing and now she turned into a shelf collecting dust. I havent even started the engine in months. My parents have taken a lot of my time. I am glad to give it to them.

    On an positive note:
    I have put together a plan to upgrade the rear end and build better engine mounts. Upgrade the fuel lines going into the tank. I believe the tanks fuel assembly unit(with float and sock) is the choking point of the fuel delivery system.

    Also I have all the "right parts" for my QuadraJet Build too. I have invested so much time reading and taking apart the QJet, it seems simple to me now. I just have to drive the car and use the junk q jet to find what piston spring will be best for my camshaft. Then I am going to start with a jet/Rod combo of 75/48. This will give me a cruise ratio 7% over stock cruise. (Lite throttle) but a w.o.t. of 17% over stock. This should be a good starting test point. Most caddy engines in cars like Nova ect with a little better cam, intake and headers like jets in the range of 75-77. Using rods from 46-52. It really is about how the cam pulls on the carb. My carb now has 70/40 jet/rod combo. I put in 72 jets. Really woke the car up. More throttle response earlier but still leaned out at 4000 rpms, Thats using just the front two barrels. My stock mechanical pump just can not keep up. (my holley red will flood the qjet even with the regulator @5 and a return line)
    So I figured I would use Lars paper and start at 75 jets and keep my cruise area near stock for better mpg. Time will tell. I do need to get out there and make progress. Just dont have it in me right now. Part of lifes ups and downs. Take care Rich.
    Thanks again for checking in on me.
    PJ
     
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  4. 48Austin

    48Austin Safty First! Then pull the trigger!

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    1964 Commercial, 1948 Austin, 58 Pan
    PARENTS? Who need THOSE! Just kidding. Mine haven't been around for a few to many years that I want to know. If they need your help, give up everything and help them!
     
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  5. PJ McCoy

    PJ McCoy Well-Known Member

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    Here is an update on my dash. Since it was out and the vynal was cracked, I decided I would try my hand at fiberglass. The easy part is done. Getting the dremel steady around the tight corners is a challenge.
    I still haven't completes the fuel lines or sub frame braces. Or the rear drive gears for the GM Corp 10. Man they are like finding gold. I'll be better off using an after market position set up. Or go with a form
     

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  6. PJ McCoy

    PJ McCoy Well-Known Member

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    The dash looks like there is alot of filler. Its not thick anywhere. I have about 20 hrs into it so far. The detail work has just begun.
    Any advice for me?
     

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  7. 5one9

    5one9 Active Member

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    What vehicle(s) do you drive?:
    2007 Magnum SRT8, 1957 F100
    Have you ever taken this car to the track?
     
  8. PJ McCoy

    PJ McCoy Well-Known Member

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    Not yet. I was planning on it back in June 2019 then some things came up and I had to readjust my plans. I am planning on it this spring. Now that I am back in the game
    I will surely let you know the results
     
  9. 5one9

    5one9 Active Member

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    What vehicle(s) do you drive?:
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    Be sure to
     
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