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Old 03-25-2005, 10:37 PM
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1940 Plymouth Frame & Engine Help

I just got involved in a project car...retired so have some time on my hands...anyway...am looking for info from anybody that has worked over one of these who has recommendations for a small V-8 or large "6" to put in it and what kind of frame/frontend work would be needed. Hear that front clips are the way to go but don't know who's are best. Any help would be greatly appreciated.

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Old 03-26-2005, 03:03 PM
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Sub-frame

I am currently building a 1940 Oldsmobile. I am installing a 1979 camaro sub-frame in it. I also have a friend who has a 1940 Buick and has the same sub-frame in it. This works out great and all the parts you need are available.
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Old 03-26-2005, 05:16 PM
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There is room to install just about any rear sump engine without altering the steering or frame. The bellhousing crossmember has to go to get anything modern in there. The stock suspension is actually pretty good with the exeption of the shock absorber mount locations, they don't absorb much.

There are a few companies out that make kits to put modern disc brakes on.
One is Ply-Do, haven't used any of the kits but followed the magazine write ups when I still had my 40 Dodge.

My uncle is in the process of building a 41 plymouth coupe, he put the body on a slightly shortened Dakota chassis, The dakota swap allows for aftermarket suspension/lowering parts, factory disk brakes, rack & pinion and choice between factory 4,6, or 8cyl engines.

If you just want to do a suspension clip check out industrial chassis for dakota suspension.

Oldtin
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Old 03-26-2005, 08:44 PM
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Quote:
Originally Posted by nomad55
I am currently building a 1940 Oldsmobile. I am installing a 1979 camaro sub-frame in it. I also have a friend who has a 1940 Buick and has the same sub-frame in it. This works out great and all the parts you need are available.

Are you saying that the Camaro sub-frame will work on the 40 Ply without a lot of modifications to the frame. The least amount of cutting and welding is preferred by this novice...but...if forced can probably do the job....thanks for the fast response...
Sleezie
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Old 03-26-2005, 11:14 PM
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Yes, the Camaro sub-frame will work great. You do have to have a pretty good idea of what your doing to do this right. The old front part of the frame will have to be removed and the Camaro front part of the frame grafted to the old frame.

Measurements are crucial to assure the correct alignment and ride height.

If you are not a expert welder, I would recomend having this done by a pro.
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Old 03-27-2005, 08:39 AM
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Be very careful when considering a clip. Make absolutely sure you pick one that has the same track width as your original. If you don't, not only will it look weird but you may very well have wheel/tire fender clearance issues and wind up having to use special order oddball back spacing wheels. In many cases the Camaro/Firebird clips are way too wide for early 40's fat fendered cars.

I would recommend checking into a Dakota IFS conversion for your original frame rather than a full clip. Providing your frame hasn't been damaged or cut up by a previous owner.

Centerline
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Old 03-27-2005, 09:32 AM
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The track width on your 40 plymouth in the front end is 60 inches. go to this site for verification. http://50chevy.freeservers.com/Suspension_Widths.html

The track width of a 79 Camaro front end is 61.3 inches. Go to this site for verification. http://50chevy.freeservers.com/Subframe.htm

You will also find several popular donar car front ends of various widhts to help you in choosing the correct one for your application.

Remember when choosing a sub-frame, to choose one that you can easily obtain parts for such as lowering spindles and springs or control arms in the tubular style if you want. All these parts are available for the Camaro sub-frame.

Getting the correct back space wheel is no problem for this application due to the very slight difference in track widths. The popular wheel manufactures supply various backspace wheels without them being a special order costly item.

Generally, the 40 fat fendered cars had the wheels sitting inboard and allows alot of room for a wider wheel.

Happy Hotrodding and keep the shiny side up!!
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Old 03-27-2005, 10:37 AM
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Does not you 40 Plymouth have independent front suspension? If so, it would be easy to upgrade the components and go from there. MOPARs were well advanced of the Big Three when it came to suspension (ride and handling) beginning in the early 30s. Things like adapting coil overs will improve even more. By all means go for a later model V-8. There is lots to choose from as long as the motor has a rear sump pan. Even a SBF can go in if you go with the old Bronco oilpan and oil pump pickup. Bet you can easily adapt a later model power steering unit and still use your original steering column from the firewall back.

I am like Centerline when it comes to clips. Seldom do I see one that really works to specs.

Trees
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Old 03-29-2005, 08:04 PM
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To All

Thanks for the info...if you can think of anything else re: best engine size and clips, please let me know. I sure do appreciate it. Everyday is a new challenge with me working on my "Diamond In The Rough" or as my wife says...."Money Pit"...she's a great sport about it though....
Thanks again...
Sleezie
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Old 04-01-2005, 10:24 PM
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Quote:
Originally Posted by Centerline
Be very careful when considering a clip. Make absolutely sure you pick one that has the same track width as your original. If you don't, not only will it look weird but you may very well have wheel/tire fender clearance issues and wind up having to use special order oddball back spacing wheels. In many cases the Camaro/Firebird clips are way too wide for early 40's fat fendered cars.

I would recommend checking into a Dakota IFS conversion for your original frame rather than a full clip. Providing your frame hasn't been damaged or cut up by a previous owner.

Centerline
When you mean the Dakota IFS conversion, do you mean get one from a wrecking yard or is this a clip or similar form from a manufacturer? Also, I saw a clip from an RB outfit that bolted on rather than required cutting the frame. Was on a 49 Chev but presume they would have one for one like mine. In my case the frame is in real good shape...never modified...so knowing front end parts are still within reasonable cost, would it really be worth it to change out. Was thinking that I don't need the BIGGEST motor in the world...small V-8 or large 6 would do. If this is the case how would present steering column work or would it need changing. Have seached a lot in the past posts but haven't found many people doing much with 40 plymouth sedans (P-10) .Would be real happy to find one so I could pick his/her brain. Anyway thanks for your above input.
Sleezie
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Old 04-02-2005, 12:05 PM
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From a wrecking yard. I haven't done one of the Dakota IFS installs but I understand they bolt in place, similar to the late 70's Chevy Pickup IFS. If it will fit at least it would keep your Mopar all Mopar.
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Old 04-03-2005, 12:38 AM
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A buddy of mine has a 41 Plyouth sedan delivery with a Nova subframe, pretty much the same as a Camaro. He will have to figure out another backspacing in his wheels, with Rally wheels (7s) the tires stick out of the wheelwell about 2 inches. It also looks to be out of square, I think I'd go with Centerline and Trees here, dog-tracking woon't be an easy fix. Dan
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Old 04-03-2005, 10:23 AM
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Quote:
Originally Posted by dinger
A buddy of mine has a 41 Plyouth sedan delivery with a Nova subframe, pretty much the same as a Camaro. He will have to figure out another backspacing in his wheels, with Rally wheels (7s) the tires stick out of the wheelwell about 2 inches.....
This illustrates my point exactly. The Nova sub-frame is a little narrower than the Camaro/Firebird units and it is still too wide for most fat fendered cars. If a Dakota swap won't work for your frame and you still feel the need to go with a modern IFS system, most Mustang II IFS kits have a track width of about 56" and won't require wheels with odd ball backspacing for your application.
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Old 04-05-2005, 08:23 PM
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Thanks to all that responded...am learning quite a bit from your input. Terms are somewhat strange but have figured them out (finally). The bulletin board and responders are great. If you all think of anything else that would be of help to me....please let me know. I'm always open to suggestions....
Thanks again...
Sleezie
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Old 04-06-2005, 05:57 PM
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1940 Plymouth Frame & Engine Help

Sleezie,
send me an Email and I'll send you the information you wanted from me.

Wrench1b4@yahoo.com
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