what would you do to make this car a dayliy driver

1975 - 1979 Mopars

  1. rumblefish360

    rumblefish360 Well-Known Member

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    Meep meep;

    YES SIR!

    Though living at sea level has an edge others up in the air don't have, I think the basics of what I did and what you can do will help no matter where you are in a similar way.

    Things I could have done to help mileage, but, never got to doing.

    A better dual plane intake. Theres nothing wrong with the factory 4bbl intake, but, I think even a performer would have helped.
    Weight not the issue, though I guess a few pounds here and there would help.

    I'm a big fan of a T-Q. The tiny primarys for better atomizeing and a higher velocity would have been the target and reason for the carb,
    though any carb well tuned is worth it's weight.
    The Carter 625 emissions carb I used was a very good carb. Dead reliable.

    Headers! Over the factory iron manifolds, Yep, you bet ha ha ha.

    I was also considering a cam change. A split duration unit, a real low RPM turner. I was entertaining (SP?) 2 cams in my head when I had
    this car. They were;

    Comp Cams
    ...................RPM range.....Adv. Duration..@ .050......lift............C-line

    Dual energy; .1200 - 5500 - 255/275 - .....203/219 - .422/.462 - 110 w/manifolds

    Extrm. energy; 800 - 4800 - 250/260 - 206/212 .432/.444 - 110 w/ headers


    (For effect, when you read below, play the music from "Star wars , the tracks of when Darth Vader is on screen, the meanceing "Empire" music)


    At the time, New York State just installed into the auto shops, by law
    a dyno emissions tool where you had to run the car on the rollers at Hwy. speed for a short time and pass emissions while at speed.

    At the time, it was the only way you could get a passing sticker for a car not old enuff to skip the test. Living within the metro area and
    not haveing a car older than 20 years old at the time, I was faced with being screwed and not haveing a car should I fail.
    The car also had twin cats before the "H" pipe and all emission parts hooked up including the floor jets in the intake manifold.
    Everything had to be in order.

    As a final insult and a big dose of "Big Brother", the state installed video cams at every test station for "Big Brother" to radomly check and
    make sure the test was being done correctly.
    Should the shop be found to skew the test in someway other than the exacting procidure writin up by the state, the shop would loose
    there license and abilty to work as a legal shop, period!

    (The Darth Vader music also works very nicely when mentioning,
    "Anything "New York, the Empire State")

    Nice huh?
     
  2. Meep-Meep

    Meep-Meep дворянин

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    Tuning for a flat torque curve and optimizing performance in the RPM range you spend most of the time in is the key. The Edelbrock SP2P with its longer runners would also be a good choice for low end torque. I had good experience with a TQ as a daily driver on my old 68 Barracuda plus it has the metering rod hangar adjustment you can diddle with.

    I have also found that weight has little to do with freeway fuel economy. My 02 Durango gets the same HWY mileage pulling my empty 1900 lb car trailer as it does without. I checked it on the way to Oregon to pick up a car for a buddy and I burned one tank with almost no city driving. 19 MPG.

    Yeah, that really sucks to have a smog era car but it does make you think! I remember building my 68 RR around the emissions testing (no dyno at the time) and having to loosen the valves on the .528" cam to kill overlap so it would pass. It did and with flying colors!! Now we have dynos and I'm sure big brother is watching us too - Empire music included!!
     
  3. 72demon340

    72demon340 Well-Known Member

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    All the 360's that Ive had all had 727's. Unless the 999's look just like the 727's.
    the ones that Ive had come out of a 75 Gran Fury, 75 Newport, 76 Newport, and a 76 Cordoba
     
  4. rumblefish360

    rumblefish360 Well-Known Member

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    LOL, well, I've never had a 727 behind a 360 small block yet though I haven't had a car older than '78. It's normaly been 318's powering the older cars I've had. My Cuda is a 4spd Manual.
     
  5. Meep-Meep

    Meep-Meep дворянин

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    My mom had a 76 360 Cordoba and it did not have a 727. I used to find them in salvage yards in the 80's and remember seeing the 904 looking trans in them. As I understand it the 999 was only put behind the 360, but suppose the 727 could find it's way in there too. Trucks most likely got the 727 even behind the 318. My 76 Ramcharger 4x4 had a 727.

    The 999 looks like a 904. Seems to me there was also a 998, which I think was an AMC trans.
     
  6. old tired rebel

    old tired rebel Well-Known Member

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    Is this a 904?

    th__00_1586.gif
     
  7. 72demon340

    72demon340 Well-Known Member

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    Well, I got 2 trannies sitting out of cars, I KNOW one is a 727 cause I put a new gasket on it and its attached to a 75 360. I will check the other one
     
  8. rumblefish360

    rumblefish360 Well-Known Member

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    I just don't know about any earlier cars or when exactly the started useing the 904 trans behind the small blocks in B body cars.

    Meep meep

    AMC used MoPar tranny for sometime but just renamed them. Theres no difference in the internals of it, svae perhaps the way the levers are on the outside to shift it. This I do not know. But they were Mopar trannys.
    (904,998/999 all MoPar.)
     
  9. Meep-Meep

    Meep-Meep дворянин

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    Kind of hard to tell from the picture because the corner is cut off and I'm not sure where the front of the car is. A 727 has a bulge in the pan where the dip stick goes in. See here -

    http://image.carcraft.com/f/9142941/116_0302_trans05_z.jpg
     
  10. Meep-Meep

    Meep-Meep дворянин

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    Rumble, yeah, I should have clarified my statement. What I meant was pretty much what you said - but you said it better!

    I had a 69 Charger back in the 80's with a 318 and it had a 904. Seems to me the only cars that had a 727 were big blocks and 340's.

    I believe the 999's have the 2.77:1 low gear and more clutches. Hmmm, sounds like a baby HEMI tranny!!
     
  11. tunescape1

    tunescape1 Member

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    can you tell me a little bit more about the 318 to 360 swap?
     
  12. rumblefish360

    rumblefish360 Well-Known Member

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    Meep meep, I do beileve your right. The trip 9 had more internals to deal with power and the low first gear. I'm not rock solid on the in's and outs of the tranny though.

    tune;

    No I can't, I think I cover it all above. What do you need a clearing of?

    Humm, thought about it some, let me re-word it this way;

    The 318 has a different size engine mount on the driverside. You can use washers to take up the space or a short hollow sleeve, like the Alt. uses over it's attaching bolts.

    The difference in trannys are just a few inchs. The 727 being longer than the 904.

    The difference in rear ends varies in the rear size.

    The driveshafts are different lengths when the drivetrain is changed around in any mannor of rear and/or tranny.
     
  13. tunescape1

    tunescape1 Member

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    thanks i just needed the motor mount cleared up it has the 999 thany so it should bolt in where the 904 was they look the same when side by side,

    dose anyone know if 76 318 exsust manifolds will bolt on to a 79 360? the 360 has that stupid smog air pump and i dont feet like spending 600+ on headers......
     
  14. rumblefish360

    rumblefish360 Well-Known Member

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    OH good! Your welcome

    The exhaust manifolds will bolt up, this I'm really sure off. I'll double check my private parts stock and make a correction later if need be.

    The smog ports on the head can be solved in a varity of ways. IMO, the best solution would be to take the head off and ethier weld up the ports with a stick or MIG and grind it smooth and flat and/or drill and tap the hole for a 1/4 X 20 set screw. These screws are flat on the outside and cn be had in a allen ket end so it sits flush/counter sunk in the head. Use lock tight to keep them there.

    On headers, the common headers for small blocks totally suck and become damaged on the first speed bump/pot hole. If you save money for a more expensive header, a slightly cheaper way out than a tti header is the Hooker super comp header. I beileve the part number is 5115. I stoled them from my 360 Cuda and bolted them on the OE 318 in the Magnum.

    There a few hundered cheaper than the tti's, but still run around $450 painted..or so. Don't sweet the bigger tube and don't worry about the percieved lack of torque from the larger tube.

    IMO, it would be worth the investment to get them.
     
  15. chrisII

    chrisII Member

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    if you want a driver, and it has points now I would buy the pertronics conversion . its a self contained electronic ignition that installs in place of the points. it is a great performance ignition and user friendly.

    on the motor mount deal..keeep the mounts on the engine when you pull it out of the donor car. use the driveshaft from the donor car also . keep it simple.
    The 360 manifolds are a bit larger. cut the tubes off about an inch from the flange that bolts to the manifold and crush it shut. other options are cut off flush press in a small freeze plug or unbolt the flange and tube from the manifold and simply cut a piece of flat stock that will cover the hole and be bolted in place at the attachment point. if you are having new exhaust made Im pretty sure that magnum truck manifolds will fit. they allow a larger pipe and also flow much better than other cast manifolds.
     
  16. old tired rebel

    old tired rebel Well-Known Member

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    I found out yesterday that my car has electronic dist. I bought the car from a Chevy guy.
     
  17. 72demon340

    72demon340 Well-Known Member

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    Here is what Ive found out on my cars Ive had:

    ALL of my 360's have 727's attached to them. Ive actually only had 2 318/904 and they are in a 78 Cordoba, and a 77 Monaco. Here are the other motors I have/ had.

    1967 Fury III 318/727, 1975 Gran Fury 360/727, 1975 Newport, 360/727, 1976 Newport 360/727, 1976 Cordoba 360/727. I looked at my 67 Coronet, and what I thought to be a 318. looks like it may be a 71-74 360/727. Someone put the 318 manifold and carb on it, thats why I thought it was a 318. Im gonna check the heads out this weekend. SO, I find the statement that 727 only came in big block cars and 340's to be false.
     
  18. 69HEMICORONETR/TCONV

    69HEMICORONETR/TCONV Well-Known Member

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    A Tag, Insurance and Fuel ! ..... Now, what did I Win !
     
  19. Magnumguy

    Magnumguy Well-Known Member

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    Copcar or Magnum GT wheels, some wheel lip trim ($$$), and a spoiler, which is being reproduced as I type....
     
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