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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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07-05-2014, 09:02 PM | #1 |
91 s13 to 440 big block Chrysler swap
Well guys I'am semi new to the 240sx scene, ( I don't even know if I'm posting in the right section so have a moderator move it if it's not) but I had one in highschool for about 3 months till I got a little to sideways and the ass end slapped a pole, so 8 year later I now have my second 240sx.
The one I have now I picked up about 2 weeks ago, my cousins best freind partially drove it into a pond. The only problem is it was running when it went in and I think it hydraliced and bent the #3 rod cause the compression is low. I Only payed $600 bucks for it which is a great deal in my book. It has a pretty stock ka in it as far as I know the only mods done to it are a injen intake tube with a HKS green mesh filter and a 3" exhaust (no o2 sensors) to a big fart can. On the inside it has a different steering wheel (almost looks like a sprint cars) and two fake bride low max seats that are kinda faded and tore up but there surprisingly nice. As far as suspension it has a nice set of coil overs I think they are Megan racing, it rides on a set of beat up mb battles Also he had me weld the diff about 2 years ago and it's held up since. I have been daily driving/beating on it right after I took the plugs out, got the water out and changed the oil. I've noticed it's kinda sluggish and I have a good chysler 440/727 automatic motor set that I would love to swap into it. The 440 has a cam, B1 aluminum heads and intake manifold and a Holley 650 along with a bunch of other stuff. The 727 has a fully manual valvebody, houges converter and a billet Imput shaft. So now after all that here's my question, is it possible to put my 440/727 motor set into my s13? The car will no longer be a daily driver road vehicle so I'm not going to worry about the gauges. Does anybody know a company that can make a adapter plate from the 440 to my stock 5spd instead of using the 727, because I would rather use it. I know the purist will say why not rebuild the ka or swap a sr20 or a rb26det instead, it's just the fact that I like to be different and it's all parts I have lying around. SO if anyone has any helpful information, ideas or Imput they are always appreciated!
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91 nissan 240sx, stock ka, curb rashd battles, just wants to get sidewyz |
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07-08-2014, 10:33 AM | #4 |
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Big block swaps are extremely rare.
I doubt anyone knows anything about this swap. You're basically on your own in uncharted territory. With that said, it's like any other swap. Custom mounts, driveshaft, adaptor plate, headers, exhaust, intake, fuel lines, wiring, etc. If you want an adaptor plate, talk to people who already make them, like Brett Collins. |
07-08-2014, 01:15 PM | #6 |
Ls swaps are all the same you seen Juan you've seen Jamal.
Anyway Here's the motor for everyone who hasn't seen a 440 before
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91 nissan 240sx, stock ka, curb rashd battles, just wants to get sidewyz |
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07-08-2014, 01:22 PM | #7 |
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Stock ka trans won't like much power over 350. So depending on your plans that 440 could destroy it.
Also you are the first person I've read attempting this. So bust out your welder and plasma cutter and get to fabbing.
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07-08-2014, 02:07 PM | #9 |
Ya I kinda figured that. I got the 727 though, don't know how I will like using a rachet shifter while drifting. I looked at some tremec 5spd's but there like 3k. So idk what to do
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91 nissan 240sx, stock ka, curb rashd battles, just wants to get sidewyz |
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07-08-2014, 07:13 PM | #11 |
Ok so here we go this may or may not turn into a build thread. The lift pump on my cummins took a shit about a month ago which is the main reason I bought my 240, so I don't know how long it will be till it's back on the road but whenever it is and I have another daily driver the car will get torn apart and stuffs gunna happen.
So here's the update for the day: I picked up a mock up block to build mounts off of over at dads and brung it back to the shop And here's the 727 I think the short shaft will really help with some of the trans tunnel issues but I will probably still have to cut it up a bit
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91 nissan 240sx, stock ka, curb rashd battles, just wants to get sidewyz |
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07-08-2014, 08:08 PM | #12 |
Post Whore!
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You may want to start with some basics first. Such as, but not limited to; the distance between strut towers, height from cross member to hood bracing, oil pan requirements, etc. Personally, I think it's a waste of a motor swap. There are much better engine choices out there that are better than being boat anchors. Now if you were sticking a new age 440 or version of(6.1-6.4L hemi) in there you'd be better off.
Either way, I'm not trying to discourage, just food for thought. GLWB.
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07-09-2014, 03:22 PM | #13 |
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biggest problem I see is, the investment of more time and effort than necessary for a sub-par return in power and fuel economy
spare parts are great, but when they require one hundred hours of fabrication it's not the same thing as just "putting them to use". It would not be so significant of an issue if pre-made custom mounts/harness/driveshafts were not already available for more efficient engines. |
07-09-2014, 08:03 PM | #14 | |
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It's not going to be as hot as it was then, I'm not going to run alcohol or such a big carb. Truly I could care less about gas mileage it's gunna be a track car and a toy, I am not shy to fabricating, along with that I know a lot of people who can help me. My dad's neighbor builds dragsters for American race car and can make about anything (has a full tube chassis vega wagon he built all by himself), my grandpa is a certified professional welder (worked at Davis Bessy Nuclear power plant in Cleveland) and my dad is a machinist so I have a dream team at my disposal. Mopar or no car
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91 nissan 240sx, stock ka, curb rashd battles, just wants to get sidewyz |
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07-10-2014, 07:29 AM | #20 |
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Carb is too small for best performance. How streetable do you expect a 1000hp na motor to be? I'd expect this build to start with a lot of enthusiasm, then die out when the price starts adding up with minimal return.
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07-10-2014, 11:01 AM | #25 | |
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Quote:
But cmon' Frank, we both know how a 1000 horsepower carbuereted V8 swap in a 240sx is going to end... the fact he pointed out the work done per unit time as if it matters automatically shut this down. |
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07-10-2014, 05:08 PM | #26 |
Ya I know I have a 1250 dominator that's setup for alcohol but I really don't want to run it, might see if I can trade it for a gas dominator
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91 nissan 240sx, stock ka, curb rashd battles, just wants to get sidewyz |
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07-10-2014, 05:19 PM | #27 |
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I'm surprised nobody has said this...but the S13 chassis itself is probably going to fold in half under the kind of torque the engine is gonna throw at it. Personally, I'd find something else to put this into but it isn't my car.
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07-10-2014, 05:24 PM | #28 | |
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The stuff I'm gunna start with is: Pull the ka, sell it Tub the fenders Have Jeff build me a FD legal cage and Strut tower braces Then drop the motor and build up some mounts Not really as simple as that but you get the gist
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91 nissan 240sx, stock ka, curb rashd battles, just wants to get sidewyz |
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07-10-2014, 06:31 PM | #29 |
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be cool for a drag car. as far as drifting or auto cross I think weight biasing will be an issue. not to say it cant be overcome but still. I would stab that big bitch in, do a solid axle swap and knock down nasty 1/4 mile times. but that's just me
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07-10-2014, 06:33 PM | #30 |
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I don't know about autocross, but it'll probably do really good burnouts. I used to hang out with a guy that had a 575hp belvedere, and that was a handful. Cut about 1000lbs off and double the power, should be a fun ride.
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