SCORE!

[Rolling_Thunder]

So most of you do not know / care about the lowly 318 Poly - but I have grown fond of that little engine...    so my Vert 66 Satty has one but I'm not fond of 2bbls on anything...    so I have been on a quest to find a single bbl intake manifold for about a year now...    I find them every so often but they are expensive! ($400-$600) -

This brings us to today...    surfed Craigslist and found "Weiand Mopar intake manifold" - opened it up and it listed Weiand 7503 - the 4bbl aluminum single plane intake that was discontinued a while ago...   

I drove down to SD and got her in my hands before I got too excited...     so...   5 hours of my times (3 major accidents on the I-5) and a couple dollars later...    I am a happy camper...   


P.S. It only cost $50.00   

[Ghoste]

Congratulations!   
And I knew and cared about the polyspheres and your quest to do right by them.

[skip68]

    Cool.   Those engines are big blocks right ?   $50. = damn good score.   

[Ghoste]

Closer in many ways to the smallblock V8's we are more familiar with than the bigblocks.  They were originally meant to become the cheaper alternative to the Hemi.

http://www.streetrodderweb.com/tech/0805sr_vintage_engines/index.html

[skip68]

   Thanks for the link.  That intake was a KILLER score....   Those are cool motors. 

[y3chargerrt]

Damn I need to start checking Craigslist.

[Cooter]

The 318 "A" Engine (Poly) Is a Small Block Chrysler engine..The "LA" Engine stood for "Lighter A" engine...Mopar Muscle Mag. did a stroker build up of one of these engines...It ended up at around 402 C.I....
Used a 4" Mopar stroker crank designed for the "LA" 318. Custom pistons, cam, and other assorted parts..Highly ported heads etc...
The Poly's share almost everything in the short block with the "LA" 318's....
You CANNOT run Poly heads on an "LA" 318 and Vise Versa as the cams are different with valve arrangements....
This engine while Different and "Trick" to some only made 402 HP after spending around $7000.00 on the build up..The 1957 Fury as well as the 1958 BASE Fury engine and the "Power Pack" option came with Dual WCFB carb's and a Single AFB respectively....These engines came in different flavors from 277"-326" (Dodge).....The Single Four CAST iron factory intakes do run around $600-$1000.00 for the complete set up for a Power Pack single four...
The Dual Four Complete Set up I've seen get all the way to $2500.00 At it's peak...Complete with the Carb's and Oval Air Cleaners...

[RD]

good score RT... cant wait to see pics of her on the engine.

[Ghoste]

I don't think I would go as far as to say that almost everything on the short block interchanges between the Poly's and wedge smallblocks.  According to the info I have the only parts that interchange are main and rod bearings, timing set (chain and gears), valve springs, oil pump driveshaft and distributor.  Is there more than this?

[Sublime/Sixpack]

 Rolling_Thunder, nice going on the purchase of the Weiand intake for your Poly 318. I too share your fondness for the old Poly, glad to hear that you kept it in your Plymouth instead of yanking it like most people do.   None of my Mopars have the Poly 318 but I do have one sitting in my garage (Dodge, vintage 1966) it still runs like a top!
My thought has been to build a Rat Rod and install the Poly.

[hemigeno]

I don't think I would go as far as to say that almost everything on the short block interchanges between the Poly's and wedge smallblocks.  According to the info I have the only parts that interchange are main and rod bearings, timing set (chain and gears), valve springs, oil pump driveshaft and distributor.  Is there more than this?

The crankshafts do interchange, after a fashion.  You have to be very careful, however, about pulley alignment as well as flywheel (or flexplate) mounting dimensions, as that can ruin your day.  DAMHIK  




I used the MoparMuscle stroker project as a loose pattern for my Polysphere project, and it does put together a nice little engine package.  It's much easier and cheaper to hop-up any of the other mainstream engines (LA, B, or RB), but there is definitely a cool factor associated with the Polysphere.

Congrats on the Weiand intake find, BTW!!  

[Rolling_Thunder]

Yes - Thanks all-   I think I might clean her up and slap her on with a little 600cfm Edelbrock with electric choke on her - Or - I could just sell the thing and clear some profit...   keep the 2bbl...     no idea. I think I'll get the thing running / driving first with the 2bbl and see what I think of it.  The rest of the engine will be staying stock so I have no clue if it is worth it to swap the intake / carb

[Ghoste]

I'm sure it is if just for the cool factor.

[Tilar]

If you ever run across any case combines from the late 50's to early 60's, many of them had the 318 poly in them. If you find one you could probably buy the whole thing, pull the engine out and scrap the rest and get your money back.

[tan top]

 sounds a  good deal     

[bsakal]

Sweet find! He shoots, he scores!