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R B motor & rear in 56 Plymouth-NEW HERE
#333679
05/30/09 10:13 PM
05/30/09 10:13 PM
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Joined: Nov 2006
Posts: 3,407
S.E. Florida, USA
rrunner
OP
master
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OP
master
Joined: Nov 2006
Posts: 3,407
S.E. Florida, USA
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Hi all, new to the street rodder form. In the past week I made a deal for the 56 wagon listed for sale here from Woody, great guy if anyone ever has the chance to deal with him, and would like to know if anyone here has done a RB swap in a 55 or 56? Are there any drop in motor mount brackets and mounts? What oil pan was used, I'm thinking a 70's truck. Also I would like to use a 8 3/4 rear, I see in another post a 68-70 rear was used how close to org width is it? With any luck I will have this car home in the next 2 weeks, just waiting on the transport co to pick it up. Thanks for any info 
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: rrunner]
#333680
05/30/09 11:44 PM
05/30/09 11:44 PM
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Joined: Sep 2005
Posts: 12,481
Chino Valley
RodStRace
I Live Here
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I Live Here
Joined: Sep 2005
Posts: 12,481
Chino Valley
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Welcome over! Top Fuel and never been before? I hope that we can keep the drama to a minimum and make you welcome. RB swap in a 55-56? I'm sure it has, but haven't read of anyone posting all the info. Is the car currently a V8 or 6? The V8 might help, considering that the usual issues are the narrow compartment and the steering on the earlier flathead six models. Haven't heard of any drop in mounts, but there is new stuff popping up every month, and lots of little one-man shops that create these things. Most engine swaps rely on a rear sump oil pan from a truck, but it all depends on the chassis and engine placement. Sorry I can't be more specific, but I just haven't read about one of these. The rear end that I used and others have used in earlier stuff is the 60s B body 8.75. Here is a good list of widths. http://www.carnut.com/specs/rear.htmlAs has been said in other threads, the build is your own, but it does help to keep to a theme and do lots of research and planning before starting.
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: rrunner]
#333682
05/31/09 10:45 AM
05/31/09 10:45 AM
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Joined: Sep 2005
Posts: 12,481
Chino Valley
RodStRace
I Live Here
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I Live Here
Joined: Sep 2005
Posts: 12,481
Chino Valley
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To help yourself and all the others that will follow you, could you post a couple shots of the engine compartment and include measurements?
Stuff like crankshaft centerline to crossmember (vertical), engine offset if any, length of current engine from bellhousing to front of radiator, width of engine with exhaust, height, width and thickness of radiator, distance from engine/bellhousing line to firewall, and angles of engine front-to-back and side-to-side, if any.
If there are any tight spots, mention those too.
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: RodStRace]
#333683
06/01/09 01:51 AM
06/01/09 01:51 AM
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Joined: Sep 2003
Posts: 1,295
Hawley, Texas
shinnery
super street
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super street
Joined: Sep 2003
Posts: 1,295
Hawley, Texas
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I'm thinking that the 277 is just an early small displacement 318 (poly that is). Does it have the same scalloped valve covers as the 318s up to 67? The initial design of the 318s was rear sump with the oil pump in the pan under the dist. so it would probably use the truck pan on a B or RB engine. Bryce 
Every electronic device is manufactured with smoke stored deep inside...
only a true genius can find a way to set it free.
The most terrifying words in the English language are: "I'm from the government and I am here to help!"
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: shinnery]
#333684
06/01/09 03:49 AM
06/01/09 03:49 AM
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Joined: Jan 2003
Posts: 8,089
Sorrento, BC, Canada
4speeds4me
master
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master
Joined: Jan 2003
Posts: 8,089
Sorrento, BC, Canada
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I THINK you might be able to get away with unbolting the brackets from the early poly and bolting them to the B-engine. I used the poly mounts and brackets on my LA. I know they're a little more closely related, but it just might work. Worth a shot with a dummy block. I believe the B-engine didn't show up until 57 or 58, so I am assuming that the mount/frame configuration changed enough that that would be the simplest solution to the problem. If you want power brakes, look at an A-body unit. Basically a bolt-on and will get the MC up and out of the way. I know you never asked, but look at www.aajbrakes.com for a reasonably priced disc conversion for the front. As for the rear, I used a 70-74 E-body unit in mine. Based on the chart located here: http://www.moparts.org/Tech/Archive/axle/17.htmlthe B-body unit should be about an inch-and-a-half narrower than the E-body unit, which was about ¼" perside wider than the OE unit I pulled out. I'd say either one would be fairly easy, requiring basically only the addition of the OE spring perches, if you want to retain the OE shock mounting setup.
2 Demons...no, not my kids! 
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: rrunner]
#333685
06/01/09 12:30 PM
06/01/09 12:30 PM
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Joined: May 2004
Posts: 4,920
Joplin, MO USA
Robbins
master
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master
Joined: May 2004
Posts: 4,920
Joplin, MO USA
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Quote:
Hi all, new to the street rodder form. In the past week I made a deal for the 56 wagon listed for sale here from Woody, great guy if anyone ever has the chance to deal with him, and would like to know if anyone here has done a RB swap in a 55 or 56? Are there any drop in motor mount brackets and mounts? What oil pan was used, I'm thinking a 70's truck. Also I would like to use a 8 3/4 rear, I see in another post a 68-70 rear was used how close to org width is it?
With any luck I will have this car home in the next 2 weeks, just waiting on the transport co to pick it up. Thanks for any info
I would of loved to of bought that. Congrats! I was wanting to put my 392 Hemi it that.
Moparlee
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: Robbins]
#333686
06/01/09 05:59 PM
06/01/09 05:59 PM
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Joined: Nov 2006
Posts: 3,407
S.E. Florida, USA
rrunner
OP
master
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OP
master
Joined: Nov 2006
Posts: 3,407
S.E. Florida, USA
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Quote:
I would of loved to of bought that. Congrats! I was wanting to put my 392 Hemi it that.
Thanks, I am looking foward to this project although it might be a little bit before I get into it all the way. When it gets here I plan on getting the surface rust off and giving a coat of por-15 as the body seems very solid. If the 277 turns over I may just see if I can get it running for now so it will move around on it's own. At this point I am leaning to the RB route, just seem like a lot of fun. Here's a pic for those of you who haven't seen it.
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: shinnery]
#333689
06/01/09 10:33 PM
06/01/09 10:33 PM
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Joined: Nov 2006
Posts: 3,407
S.E. Florida, USA
rrunner
OP
master
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OP
master
Joined: Nov 2006
Posts: 3,407
S.E. Florida, USA
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Quote:
I'm thinking that the 277 is just an early small displacement 318 (poly that is). Does it have the same scalloped valve covers as the 318s up to 67? The initial design of the 318s was rear sump with the oil pump in the pan under the dist. so it would probably use the truck pan on a B or RB engine.
Bryce
Yes 277 is a poly motor. Anybody need one? 
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: rrunner]
#333690
06/01/09 11:44 PM
06/01/09 11:44 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
Quote:
I'm thinking that the 277 is just an early small displacement 318 (poly that is). Does it have the same scalloped valve covers as the 318s up to 67? The initial design of the 318s was rear sump with the oil pump in the pan under the dist. so it would probably use the truck pan on a B or RB engine.
Bryce
Yes 277 is a poly motor. Anybody need one?
Just saying it's a poly isn't quite enough to identify it. Dodge and Chrysler poly engines of the fifties were were completely different engines than the Plymouth poly introduced in the 1956 model year.
But yeah, the 1956 Plymouth 277 poly is a small bore, short stroke version of the 318 poly. Other variations of the Plymouth poly were 301, 303, 313, and 326.
Plymouth poly's were used exclusively in Plymouths (at least in the US, and in cars) until 1959, when Dodge got a one-year-only 326 version. From 1960 on, the 318 poly was just the corporate small V-8 until it was superseded by the LA wedge small V-8's.
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Re: R B motor & rear in 56 Plymouth-NEW HERE
#333691
06/02/09 02:10 PM
06/02/09 02:10 PM
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Joined: May 2004
Posts: 4,920
Joplin, MO USA
Robbins
master
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master
Joined: May 2004
Posts: 4,920
Joplin, MO USA
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Killer, Ya if that has the small block timing cover then you could put a stroker crank in it and the stock two four intake on it from the 318. Make it fairly stock.....sleeper look or a weiand four barrel intake and the stroker crank. I bet the cylinders are thick in that block too......it could go to a four in. bore. Of course you'd want to sonic check for that..........but it would be cool.
Moparlee
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: Robbins]
#333692
06/02/09 07:25 PM
06/02/09 07:25 PM
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Joined: Nov 2006
Posts: 3,407
S.E. Florida, USA
rrunner
OP
master
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OP
master
Joined: Nov 2006
Posts: 3,407
S.E. Florida, USA
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Quote:
Killer, Ya if that has the small block timing cover then you could put a stroker crank in it and the stock two four intake on it from the 318. Make it fairly stock.....sleeper look or a weiand four barrel intake and the stroker crank. I bet the cylinders are thick in that block too......it could go to a four in. bore. Of course you'd want to sonic check for that..........but it would be cool.
Or you could loan me that 392 
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: Robbins]
#333693
06/03/09 10:31 AM
06/03/09 10:31 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
Killer, Ya if that has the small block timing cover then you could put a stroker crank in it and the stock two four intake on it from the 318. Make it fairly stock.....sleeper look or a weiand four barrel intake and the stroker crank. I bet the cylinders are thick in that block too......it could go to a four in. bore. Of course you'd want to sonic check for that..........but it would be cool.
Bore on a 277 is only 3.75" - it probably does have thick cylinder walls, but I'd be real surprised if it would bore a full quarter of an inch.
On the other hand, a 62-5 318 poly with torqueflite would pretty much bolt in and, using the later shift cable, you could even hook the pushbutton torqueflite up to the original pushbutton shifter - you wouldn't have a button for low, but otherwise it should work OK. With a .090 overbore and a 4 inch stroker crank, you'd have a 402 poly that would run pretty strong. 
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Re: R B motor & rear in 56 Plymouth-NEW HERE
#333694
06/03/09 12:23 PM
06/03/09 12:23 PM
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Joined: May 2004
Posts: 4,920
Joplin, MO USA
Robbins
master
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master
Joined: May 2004
Posts: 4,920
Joplin, MO USA
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Quote:
Quote:
Killer, Ya if that has the small block timing cover then you could put a stroker crank in it and the stock two four intake on it from the 318. Make it fairly stock.....sleeper look or a weiand four barrel intake and the stroker crank. I bet the cylinders are thick in that block too......it could go to a four in. bore. Of course you'd want to sonic check for that..........but it would be cool.
Bore on a 277 is only 3.75" - it probably does have thick cylinder walls, but I'd be real surprised if it would bore a full quarter of an inch.
On the other hand, a 62-5 318 poly with torqueflite would pretty much bolt in and, using the later shift cable, you could even hook the pushbutton torqueflite up to the original pushbutton shifter - you wouldn't have a button for low, but otherwise it should work OK. With a .090 overbore and a 4 inch stroker crank, you'd have a 402 poly that would run pretty strong.
Ya, that's why I said sonic check......but he got the idea I think of making the stock motor or stock looking motor style into monster.
If it's the other poly motors then he could make a Hemi motor out of those with the right parts...no?
Moparlee
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: Robbins]
#333695
06/03/09 04:47 PM
06/03/09 04:47 PM
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Joined: Nov 2006
Posts: 3,407
S.E. Florida, USA
rrunner
OP
master
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OP
master
Joined: Nov 2006
Posts: 3,407
S.E. Florida, USA
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Quote:
Quote:
Quote:
Killer, Ya if that has the small block timing cover then you could put a stroker crank in it and the stock two four intake on it from the 318. Make it fairly stock.....sleeper look or a weiand four barrel intake and the stroker crank. I bet the cylinders are thick in that block too......it could go to a four in. bore. Of course you'd want to sonic check for that..........but it would be cool.
Bore on a 277 is only 3.75" - it probably does have thick cylinder walls, but I'd be real surprised if it would bore a full quarter of an inch.
On the other hand, a 62-5 318 poly with torqueflite would pretty much bolt in and, using the later shift cable, you could even hook the pushbutton torqueflite up to the original pushbutton shifter - you wouldn't have a button for low, but otherwise it should work OK. With a .090 overbore and a 4 inch stroker crank, you'd have a 402 poly that would run pretty strong.
Ya, that's why I said sonic check......but he got the idea I think of making the stock motor or stock looking motor style into monster.
If it's the other poly motors then he could make a Hemi motor out of those with the right parts...no?
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Re: R B motor & rear in 56 Plymouth-NEW HERE
[Re: migsBIG]
#333698
06/12/09 12:00 AM
06/12/09 12:00 AM
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Joined: Feb 2007
Posts: 649
Davis, California, USA
MrBelvedere2
mopar
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mopar
Joined: Feb 2007
Posts: 649
Davis, California, USA
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Yes that is my blue 56 Plymouth Belvedere, it has a 383 in it, still mated to the powerflite, got questions? ask away!
1965 Plymouth Belvedere II hardtop
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