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500, 472, 425, 368 Discussion, 500sx in Cadillac Engine Technical Discussion; Just thought I would share my ideas for my summer project (After completion of the Eldo) 1989-1994 Nissan 240sx. Here's ...
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    terrible one's Avatar
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    500sx

    Just thought I would share my ideas for my summer project (After completion of the Eldo)

    1989-1994 Nissan 240sx. Here's the plan:

    Firstly:

    Obtain this car cheap. $700 max.
    Sell off the engine and trans for $300 or more, depends.

    Engine:

    Of course, obtain another Cad 500. Plans for this would be some '76 cc heads, lightly ported w/ dished KB's for 10:1 compression. ~550 lift cam, Potters roller tip rockers, OS valves, Edelbrock intake, and some used Holley or something. Grab a TH400 to go with it, do a basic rebuild on that. Should be good for say 400 horses, 500 ft. lbs.

    Gutting:

    Next, gut the engine bay. Completly. After re-painting and whatever, I drop the engine and tranny in and figure out mounts. Once all that's done the essentials get wired back up. All a/c stuff goes. Also I may ditch the PS. From there I'll just be running an alt. Also thinking about a dry sump oiling system.

    Interior:

    At first I wanted to gut the interior, but it wouldn't save all that much weight. I plan to simply add a cage and then do whatever for my guages and stuff. Also would be doing some frame braces for obvious purposes.
    Not sure what to do about shifting. I guess I could rig up the linkage for the TH-400 to where I could use a floor (or console, for that matter) shifter, right?

    The Rest:


    Another thing that I have yet to look into is the rear end. Doing a Ford 9" or something is a lot of work, especially with the IRS these cars have. I do know that the '94+ models had a stronger rear end that was also a posi. I would like to see about swapping one of these in. Cheap and easy. It might break, but I would think the tires would slip before that if I can get it to work. I'm not going to be running slicks or anything.

    These cars weigh about 2600 lbs. That's one hell of a power to weight ratio.

    Thoughts? Suggestions?

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    Re: 500sx

    It will be grand and you can beat (and surprise) the hell out of the ricers at their own game!

    I bet dry (w/o NOs) it'll run high 11's

    Just hope you get the coupe, and not the hatchback

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    Re: 500sx

    For the rear-end if you want IRS still you can use Ford T-Bird rear. Thats what they use for Monster Miata's. I'm not sure if it handle a 500 though. Solid rear axle would be your best bet still.

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    Re: 500sx

    Hm, and that would fit on the 240sx?

    I'm not sure how much the rear is going to need to take, and I don't know anything about them really. I just figured the IRS would make things a lot more complicated. It's gotta be cheap too!

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    Re: 500sx


    +

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    Re: 500sx

    prepare for handling equal to a bar of soap

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    Re: 500sx

    I wonder how she'll do with the stock ity bity wheels and tires on there? Probably grip really well, right?

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    Re: 500sx

    I dunno... I personally have no desire for such a build....

    500's are a great thing, but in a small light weight sports car... I dunno... it would be cool, but not my thing... owning a 240SX isn't my thing .

    I still think the hot rod 500 powered 1972 Winnebago is far more cooler

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    Re: 500sx

    a 500 in a 3300lb Camaro would be fast

    a 500 in a 2500lb 240SX would be insane!

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    Re: 500sx

    I've seen sb Chevy's in olded 240Z's before, they through the guy out of the import drags.

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    Re: 500sx

    Basically my reasons for this build boil down to something very simple. I want something cheap, fast, and fun. I gotta have an RWD car to mess around with. I could start my Charger project, but that would take such a long time and so much money. If I can build something fast on the cheap to mess around with, why not?

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    Re: 500sx

    you know, I have to say....

    in a 240SX and Miata type cars....

    for me atleast, it woudln't be a daily driver, more like a fun sports car....

    I would *want* a DOHC 4 or 6 cylinders....

    simply because I would want to bang thru the gears, rev it up high etc... I don't like DOHC for daily driver use and stuff, but as a sports car when you are mostly driving it fast, its a great thing.... so I personally think I would stick with what it had, and work with that.

    They are very different then a muscle car... muscle car is pure power... sports cars have traditonally been modest, even underpowered cars made for the driver... perfect handlings, nice 4/5/6 speed manual transmission... made to connect the driver with the car to the road....

    bolting a 500 beast into it, hardly seeing above 5,000RPM using the 3-speed auto TH400... just seems to ruin what the car would be. Yes, it'll be fast, and it would beat other similar cars in a drag race... but personally, it isn't what I would want... While I prefer large American cars with large V8's, I do have a slight desire for a small sports car and such, so if I did, I would want to keep it true to its roots...

    The new Pontiac Solstice/Saturn Sky REALLY got my attention... I got to sit in a Solstice, manual, convertible... such an amazing car, the lady just bought it and loves it.

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    Re: 500sx

    Yeah I agree with what Rick was saying...

    The 240SX was designed to be a fun, zingy, little canyon cruiser that could seat 4 in a pinch.

    Putting a 500cid V8 into it will make it very very fast.... in a straight line, but it would be completely unbalanced. These cars never had much low end torque when new, and I think putting a motor that ripples out atleast 360 lb/ft (a 205 lb/ft increase) would kind of ruin the car's main intent.

    It's kind of like putting really stiff shocks or springs on a '95 FWB. Sure, It'll handle better, but was a '95 FWB meant to handle good? No.

    Now I'm not trying to kill your idea, but this is what I have come up with.
    It will be a very fast car if you can get that power to the ground

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    Re: 500sx

    I understand, but I think you guys got me wrong. Sports cars are fun, sure. However, I don't want a Nissan. I don't like the 240sx. I am not going to have one as my daily driver, or even as my weekly driver. I like the Cad 500, I like power. I want something that is powerful and RWD to take out and mess around with. Smoke some tires, tear up the streets, maybe take to the track every once in a while, not something to drive around town to the grocery store.

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    Re: 500sx

    Well if you don't intend on taking this car out in the rain/snow or as a daily driver, its a fine idea.

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