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  #1  
Old 04-17-2009, 01:24 AM
unitarmonk unitarmonk is offline
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Default 318 Intake Manifold 4 Barrel Wedge Block?

We are trying to determine whether there was ever a 4 Barrel intake made for the Dodge 318 wedge block truck motor, and/or where to find info on this or where one could possibly be found? Thanks!
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  #2  
Old 04-17-2009, 01:29 AM
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I have never heard the term wedge in reference to any 318. Are you referring to the old wide block 318?

If so, they made a 4 bbl for the passenger car engines and they were standard on the 1960 Dodge Dart Phoenix and the 1960 Plymouth Fury. I believe they were also available in '59 and '61.
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Old 04-17-2009, 01:46 AM
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Yep.

And I think there was a 2 4bbl manifold too, made like 295HP, right?
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Old 04-17-2009, 01:52 AM
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Originally Posted by TK View Post
Yep.

And I think there was a 2 4bbl manifold too, made like 295HP, right?
Right here.
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  #5  
Old 04-17-2009, 01:53 AM
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Thats so sweet.
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  #6  
Old 04-17-2009, 05:09 AM
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A wedge is an LA block, as the heads are not polys
Truck motor, I have no clue, but I have had a couple 318 cop cars, but they basically were 360 heads and intake. Nothing 318 specific.
273 had a 4 barrel intake.
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  #7  
Old 04-17-2009, 07:19 AM
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Biggrin

The OP didn't specify a year for the engine, but his profile lists a 1966 truck. The LA 318 didn't come out until the 1968 model year, so that's why I assumed he had a poly.
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  #8  
Old 04-17-2009, 08:54 AM
4eyes 4eyes is offline
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i have seen factory 318 4 bbl late 70 early 80s i think. it had a qj from the factory on it.... i have heard of la engines referd to as wedge and you have too but not 318, remember the 71 or 72 duster i think theres one on a carrs album cover say 340wedge on the hood. saw one of these last year at local car show and a nieghbor of mine had a charger that had that on the hood
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  #9  
Old 04-17-2009, 09:52 AM
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Wedge refurs to the valve train layout. All Mopar "LA" engines are a wedge design.
All Mopar "A" engines are called Polypherical (SP! I'm sure) and also go by the names, canted valve head & Semi Hemi heads.

The factory did put out a 4 bbl. and dual 4bbl. intakes for the Ploy engines. Only in the later years, something in the late 70's did the "LA" 318 get a 4bbl. package. 360 heads and intake's were used.

There is no real difference between truck and car engines. The only exception to this is a 318-3 engine that had some special specs to it that I keep forgetting. Mostly because it's B.S. in special, more so just seldomly used in the basic people mover engine.
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  #10  
Old 04-17-2009, 10:19 AM
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Default '58's

Had four barrel intakes. They came with the "power pack" upgrade, and ran real well. Had one on my '58 convertible (Wish I still had it!).
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  #11  
Old 04-17-2009, 10:38 AM
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Biggrin

The OP needs to verify the year of his 318, so we know if he is talking about a poly or an LA engine.
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Old 04-17-2009, 10:48 AM
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Quote:
Originally Posted by rumblefish360 View Post
Wedge refurs to the valve train layout. All Mopar "LA" engines are a wedge design.
All Mopar "A" engines are called Polypherical (SP! I'm sure) and also go by the names, canted valve head & Semi Hemi heads.

The factory did put out a 4 bbl. and dual 4bbl. intakes for the Ploy engines. Only in the later years, something in the late 70's did the "LA" 318 get a 4bbl. package. 360 heads and intake's were used.

There is no real difference between truck and car engines. The only exception to this is a 318-3 engine that had some special specs to it that I keep forgetting. Mostly because it's B.S. in special, more so just seldomly used in the basic people mover engine.


Or was wedge referring to the chamber.....
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  #13  
Old 04-17-2009, 12:16 PM
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Being a truck guy, I have heard lots of people call the old 318, a wedge, probably because it is bigger looking, or something.
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  #14  
Old 04-17-2009, 01:41 PM
Brian Mills Brian Mills is offline
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Default 318

Ya , I thought wedge was the chamber Rumblefish . Truck engines have valve rotators mostly , unless they are Magnums , not much else .
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Old 04-17-2009, 01:57 PM
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Quote:
Originally Posted by passing you View Post
Or was wedge referring to the chamber.....
No, in line valves.
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  #16  
Old 04-17-2009, 02:16 PM
Brian Mills Brian Mills is offline
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O.K. I'm never too old to learn something new . Hemi , Wedge , Poly , I always thought these refered to the chamber .
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  #17  
Old 04-17-2009, 03:28 PM
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Quote:
The only exception to this is a 318-3 engine that had some special specs to it that I keep forgetting.
HD valves, seats, cam, steel crank, bigger sump in the pan, single roller chain, and some had goofy cooling on the heads. (And they had LOWER compression)
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  #18  
Old 04-17-2009, 04:23 PM
4eyes 4eyes is offline
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your correct brian mills it does mean combustion chamber shape not valve arangement sorry rumblefish. the term canted refers to valve arrangement but that chamber is call poly or polisphirical. dont know proper spelling
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  #19  
Old 04-17-2009, 04:51 PM
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However, nah.... Not worth it.


So, is it a poly 318, or is it not?

Question only the guy who started this thread can answer.
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  #20  
Old 04-17-2009, 06:50 PM
hotroddave40 hotroddave40 is offline
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wedge refers to both the valve arangement and the combustion chamber shape.

A hemi traditionally has valves that open towards each other and a hemispherically shaped combustion chamber, the new hemis have more of an egg shaped combustion chamber than a hemisphere but they share the same valve arangement and are still called hemis. The original hemis had the most hemishperically shaped chamber, later valve arangements stayed the same and even though the chamber shape it self is no longer a true hemi chamber.

A wedge has the valves in line opening next to eachother at a slight angle to the piston, if you look at a wedge motor from the front of the engine you can visualize how ther would be a wedge shaped chamber between the valve faces and the pistons. LA 273 318 340 and 360 engines all fall into this catagory as well as 350 361 383 400 413 and 440 big blocks, some 426 motors are wedges and some hemis. Now the chamber doesn't always end up in a wedge shape because the engineers want to make open chambers to reduce emmisions and divots around the spark plug and stuff to shroud or un shroud the valves for different reasons. Dome pistons mean they are not truly a perfect wedge also but Even with the different shaped chambers they are still called wedges because of the theoretical chamber between the valves and piston. I think the term wedge was probably first aplied to some of the mid 50s engines like the 55 chevy small block because the chambers did truly look like a wedge could be laid in the chamber, the basic valve arangement stayed the same but over time the chamber changed but we still call them wedges because the chamber originally dictated by the valve arangement made the chamber wedge shaped.

Poly or polysphere engines have a valve areangement kinda like a hemi but the valves do not open towards each other, they are at odd angles to simplify valve train stuff to build them cheaper than a hemi and use only one rocker shaft. They are called polyshperes because they are sort of spheres.

BTW 1967 was the first year of the LA 318
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  #21  
Old 04-17-2009, 07:42 PM
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Quote:
Originally Posted by hotroddave40 View Post
BTW 1967 was the first year of the LA 318
I believe you are correct, sir. I have also read that 1968 was the first. To confuse the issue, Canadian built cars had the poly 318 and the US built used the LA.

My last 318 poly was in a '66 Coronet 440 vert that I bought new. Since I switched back to HP 383's after that, I didn't pay much attention to the 'teen.
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  #22  
Old 04-17-2009, 07:46 PM
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How dare you!


Also, didn't the poly come with big plugs, small plugs, water heated manifolds, non water heated manifolds, eight bolt crank, six bolt crank, nubbed crank on the old ones, and I read somewhere that they made a 318 with a B/RB housing....... or drilled it so it would fit......

I have a
headache now.
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  #23  
Old 04-18-2009, 10:02 PM
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My '67 Charger came with a LA 318. I believe that was the year they debuted.
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  #24  
Old 04-18-2009, 10:58 PM
Century Cp Guru Century Cp Guru is offline
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The old 318s up to67 Were Poly speres And called that because of Chamber design, also the truck motor With The 318-3 was a La engine with a better crank, and the valves were made of a better material. the 318 poly had both 4bbland 2/4barrel options.318 la motors started in 78 in Cal and high altiude pkgs, they were Thermo Quads onlys and basically 360heads and intake. the Qj was only on trucks in 84/5.
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  #25  
Old 04-19-2009, 12:34 AM
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Guys, settle down. When the OP comes back, he will clarify what he has/needs.

Regardless of that, you can get a 4bbl intake for either engine.
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  #26  
Old 04-19-2009, 05:32 AM
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Quote:
Originally Posted by Century Cp Guru View Post
The old 318s up to67 Were Poly speres And called that because of Chamber design, also the truck motor With The 318-3 was a La engine with a better crank, and the valves were made of a better material. the 318 poly had both 4bbland 2/4barrel options.318 la motors started in 78 in Cal and high altiude pkgs, they were Thermo Quads onlys and basically 360heads and intake. the Qj was only on trucks in 84/5.
Got (3) 86-88 360's with Quadrajets here.........
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Old 04-19-2009, 09:54 PM
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i think 67 was the first year of the la 318, and as well as the last year of the 318 poly, i think they made both that year, and if he needs a 4bbl intake that will fit a smallblock la series engine, any la series smallblock intake will work from a 273, 318, 340, 360...
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  #28  
Old 04-19-2009, 11:52 PM
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"the Qj was only on trucks in 84/5."

I saw a Diplomat at the wrecking yard last week with a Quadrajet. Didn't bother checking the year or whether it was a 318/360, but it looked factory installed.
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Old 04-19-2009, 11:58 PM
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some have grasped this others haven't yet I don't think....

'Wedge' refers to the chamber, not in line valves, so weather it 340 or 440 it's a wedge.
hemi is a hemi and poly is a poly, kinda like the new hemi or should I say poly.
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  #30  
Old 04-20-2009, 12:36 AM
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Or, call the Poly a canted valve head?

Wedge chambers and inline valves go hand in hand.

Splitting hairs.
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