318 exhaust manifolds on a 360

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The manifold that I think works best is the casting number 53009376. Now there's a few things you need to know besides the casting number. First the "Hollander number" is 327-1721R. For those of you who are not familiar with Hollander....this is a large book that tell the junk yards what parts interchange with what other parts. Like the Hollander part number on a 84 Dodge 360 truck head might be the same as the Hollander number on a 1990 360 Jeep head. If the Hollander number is the same it should be pretty much an exact swap. There is at least one other manifold out there with the same casting number so there may be more but even though the casting number is the same, if they are different in any way even though they are interchangeable, the Hollander number will be different.
As an example the manifold casting number 53009376 comes with and without a smog port. The manifolds are the exact same casting but one comes with the smog port. Since they are not exactly the same (but are interchangeable) the smog port manifold has a Hollander number 327-01580R. This way the junk yard can get the exact manifold you need just by the Hollander number.
If you try and buy one of these manifolds off the internet and it is advertised by the casting number you may or may not get the one you want. Yes, you can plug the smog port but why bother when you can get the correct one for the same price. Many times on ebay they advertise without a picture and they give the casting number so beware!!
There is a long list of vans and or Jeeps/trucks that use this manifold so they are not too hard to find.
There is also the 6618 manifold (see pics). It can also be used on the a-bodies but as I found the exit port ends up real close to the firewall and could likely introduce a lot of heat into the passenger compartment (but it could be used). There is also the 9377 (see pics), it would bolt up to the driver's side if you have a JEEP motor with the starter on the passenger's side, I know because I found out the hard way!!!:violent1:
This is why, as I posted earlier, when I tried to install this manifold (9377) on my '69 Barracuda the exit flange kept hitting against the starter. Well I now know that this manifold came on the 360 Jeep Grand Cherokee and after seeing the manifold on a Jeep this weekend I saw that the Grand Cherokees have the starter on the passenger side which frees up the driver's starter space for the manifold.
As it turns out I measured my stock 318 manifold and it came out to be 1 5/8 exit hole (see pics)....that's pretty small. If you have a late 60s 318 with stock manifolds yours should be the same. Yes my old original 318 manifold is for sale $50 plus shipping. I'll give you people more info later but here are some more pics of manifolds for you to compare.
PS - I have never found any of these (small block) Jeep or Mag truck manifolds to measure more than 2 1/8", and the hole is only 2 1/8" in one spot and smaller everywhere else. I can machine them to come out very close to 2 1/4" (all the way around) but I have not seen one that came with a factory hole that big, except the 340.
Treblig
 

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I bought every style Magnum drivers' side manifold in every variation I could think of; 5.9 Ram/Dak/Van/Cherokee, 5.2 ditto. I literally had 9 driver's side manifolds from Magnums, all different.

ONE fit and cleared everything. The outlet pointed straight at the torsion bar, dead center, with about 2" to make the bend.

Dougs' headers it is!

If you want manifolds, buy the 340 set and move on with your life.

Treblig, I don't know you, and I don't have a dog in the fight, but you're not doing anything new and you're certainly not making many friends or customers doing it.
 
AND I tried mounting the pass. side backwards on the drivers' side, too. On a manual steering car, maybe. PS? Forget it.
 
I bought every style Magnum drivers' side manifold in every variation I could think of; 5.9 Ram/Dak/Van/Cherokee, 5.2 ditto. I literally had 9 driver's side manifolds from Magnums, all different.

ONE fit and cleared everything. The outlet pointed straight at the torsion bar, dead center, with about 2" to make the bend.

Dougs' headers it is!

If you want manifolds, buy the 340 set and move on with your life.

Treblig, I don't know you, and I don't have a dog in the fight, but you're not doing anything new and you're certainly not making many friends or customers doing it.


First off I'm not looking to make any friends!! Second, if you've bothered to read all these posts, I've already sold one of my manifolds, (Sold, paid for and delivered). Third, I was trying to help the OP by answering some of his questions about 318 manifolds on 360s, sorry if I was under the impression that we were supposed to help each other. And as for not doing anything new.....I hadn't read anywhere that the Hollander number's were different for the smog port and non-smog port so I ended up buying a ported manifold by mistake by using the casting number. I don't want other's to spend their money on something they don't want. I had also never read that the one manifold (9377) was for a Jeep engine with the starter on the passenger's side. Maybe everybody else knows this fact, if they did they never wrote about it??? I researched this issue for many months and didn't read anything about the Hollander number. If you already know everything there is to know about these manifolds that's great (please tell us) but, if you've read the previous posts on this thread, you'll read that I also was questioned for not giving all the information I had. It was a misunderstanding, but now you're jumping on me because I'm giving too much information.
I'll let the majority decide if this information is useful. I'll sell my version to those who want it and to those who want to use the manifold as cast, well it's their option. I know that I'm not the only person who either doesn't like headers or can't afford them BUT I still want to get as much exhaust flow as possible.
As for buying 340 manifolds....I guess you haven't noticed that many members aren't rich!!! If they were they would all buy 340 manifolds until there were none...then what??? For those who are not rich...Here's a fairly inexpensive alternative, modified or not!!!


The information you just posted is great but we all need casting numbers to avoid the manifolds that don't work??? You wasted some of your money on manifolds and I wasted some of mine, I was hoping to help other FABO member's save their money.

Treblig
 
This should be the last of it unless I buy more manifolds and make more tests on the driver's side or unless anyone has a question. But from what I've heard I should just stop trying because everyone's already tried everything.
As every one already knows the main reason it's so hard to fit a newer magnum manifold into the late 60s a-bodies is because of the power steering and/or manual steering box and shaft. Since I've never tried it on a manual steering box I reserve the right to see for myself. But as you can see in the last pic below, the factory driver's manifold kicks way up as soon as the ports leave the head. Big block manifolds are designed the same. The manifolds kick up to avoid hitting the steering box/shaft.
The first four pics show a stock driver's manifold lined up with a magnum so you can see why the problem exists. Now I realize that many member's are already aware of these details but I'm writing this for anyone who hasn't yet bought any magnum manifolds and might have questions. The slender piece of wood represents the space that the steering box and shaft would occupy. This is just a general representation. Since the magnum manifold comes straight out and down as opposed to straight up you get interference. I don't know (personally) if a magnum will fit in between the small block head and the steering box/shaft but many have said that it won't. The only one I did try on the driver's side came out of a car that had the starter on the passenger's side and because it hit the Mopar starter I could never get it in far enough to really tell anything. Since I personally haven't tried every large hole manifold out there (although I have a long list of possible donors) I can not say for sure. But I do know if all the large hole manifolds come straight out and down and if they are all just as thick as the one I tried on the driver's side, the odds are against you. In my case I happened to come across a good bargain on a driver's side 340 manifold so I stopped looking for a solution for that side. I then focused on the passenger's side and eventually settled on the one I recommend in my post.
The purpose on my posts here were to let everyone know, in my opinion, which large hole manifold is the best for the passenger's side, how to easily identify it for purchase, how to modify it so that it flows better and to help answer some of the questions the OP had at the beginning of this thread.
I have one more experiment to try on the driver's side. If the results are positive I may have more information...if anyone is interested???

Treblig
 

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your info is being read, over 1k of views. Not many people take the time to document like you have, good job! I use summit headers with no problems but many prefer manifolds.
 
I thought you said that you had a 340 driver's side manifold?? Why don't you use that.? A dimpled/dented header really cuts into your power. If you have a 340 manifold all you need is a 360 "special" manifold like the one I have in my 69 Barracuda. It fits perfect and there's plenty, and I mean plenty, of room for the down pipe. It kicks the exhaust out over and behind the oil filter. Don't get the 360 magnum manifold that I've seen other suggest and use. The mag truck (driver) 53006617 has the exit flange coming out real close to the floor/firewall and will introduce heat to the passenger compartment. The 360 manifolds I have exit in the middle of the large space on that side and come with an exit hole just short of 2 1/4" ( a hair over 2 3/16"). That's just about the same as the 340 manifold. No leaks, no "dragging on the ground", no retightening the header bolts and lots of room for your down m
I'm planning on going into production on these and sell them to FABO members, like me, who hate the high price of headers, hate getting their pipes dented and scraped by the street, hate the difficult installation and don't forget those "lovable" header leaks. Anyway that why I figured all this out and will start producing these (slowly). You would be first in line, but if this turns out to be popular I'll sell to he who has the money!!
If you're heavy into drag racing then you need headers but if you cruise the streets like me and you don't like choking down your engine then "This Bud's For You!"
They come sand blasted and painted with High Heat Paint!!

To make things even better, these should flow even more than the ones they tested on those magazine sites!!!!!!!!!!!
Haven't started advertising yet because I wanted to build up a stockpile of them in case I get inundated....one can hope!!! LOL


PS - I even included some pics of my car from underneath so you can see where they exit and how much room you have!!
Treblig


I'm interested
 
Here's one I just finished today but it might be sold already. It took a little extra work (2 more hours) to get it out to 2 1/4" (same as a 340 manifold!!!) as you can see in the pics. It looks pretty nice for home made!!! It still needs a little touch up but it pretty close!!

PS - That box of carbide burrs (see pics) cost well over $100 so I'm not getting rich here!!


treblig
 

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Here's one of the things I wanted to try. I know many members already know everything I'm about to say but this is for those who haven't heard it. I cut a block of wood and made it the same thickness as a magnum manifold. I placed it the space that the magnum manifold would occupy in my Barracuda engine bay (up against the manifold gasket on the head). My car has P/S with floor shift console. In the pic of my driver's side engine area you see the same block of wood up against one of the P/S lines, but just below that you can see that the P/S unit itself sticks out much further towards the engine and this is where the mag manifold would need to be. In the same pic you can also see the other P/S line (more toward the firewall) which is also closer to the engine than the line nearest the piece of wood. Although the mag manifold might clear the P/S unit (below the piece of wood) I seriously doubt it would clear the P/S fitting that is closer to the firewall. There is just about no way this mag manifold will fit with my configuration. Every mag manifold I've seen has the same thickness.
As luck would have it a mechanic friend of mine is currently working on a 68 Barracuda with manual steering and column shifter. I'm headed over there with the same piece of wood to see the difference between P/S and manual steering and column VS console shift.


PS - I see driver's side 340 manifolds becoming harder and to find!!!
treblig
 

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I made it to my mechanic friend's place and got some good pics of a '68 Cuda 318, manual steering and column shift. Right off the bat I noticed that the column shift has a longer collar coming from the fire wall which looks like it might interfere with the mag manifold. But with manual steering there's a ton of room compared to P/S. I'm not saying that the Mag manifold will fit but there is a lot more room. In my '69 barracuda w/P/S there's more room at the rear because of the shorter collar but less room near the front because of the P/S. There have been many posts about these a-bodies and mag manifolds but I don't remember one post about a car that came with a console shifter and had manual steering but had the column swapped out for a P/S column because that would be the car with the most room near the front and near the back. You can compare the pics yourself because the mechanic wouldn't let me remove the diver's manifold to experiment.
The first pic is a repeat of the one I posted earlier (P/S, '69 cuda, 340 manifold)
The second and third pic is 68 cuda, manual steering, column shift AND 340 manifold.
Forth pics show the longer collar on the manual steering, column shift car.
Fifth pic shows how the thickness of the mag manifold would interfere with the longer collar.
Last pic shows the short collar on my '69 Cuda P/S shaft.

So my question would be....Has anyone who has a car with power steering column (short collar), a console shifter and a manual steering box ever tried one of these magnum manifolds?? A car with these components would have the best chance of using the magnum manifold on the driver's side. Now don't get crazy on me and say, "Mopar ever put a P/S column on a manual steering car!!!" Yes, yes I know that but that's not the question. Members are asking if it's possible to use a magnum manifold in a the late 60s a-body and I'm just trying to see if it's possible. I know for a fact that some members have many extra parts and could, if they wanted to, put a P/S column in a manual steering car. I also know that you could say that it would cost too much to convert the steering column just to save someone from buying headers. But remember....some people don't like headers and don't want headers (no matter how cheap or expensive they are). I personally would not mind converting my column if I knew it would allow me to use one of these magnum manifolds because I will never put headers on my car.

Does anyone know the answer to the question above???
Treblig
 

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Pounded on and yet you persevere. Sorry I went that direction.....I was really just poking fun. I shouldda used a smiley or sumffin I guess. Damn guys, he's sharin good info here. Give him a break. Bunch of yahoos
 
Pounded on and yet you persevere. Sorry I went that direction.....I was really just poking fun. I shouldda used a smiley or sumffin I guess. Damn guys, he's sharin good info here. Give him a break. Bunch of yahoos

Thanks.....I know I'm stubborn, but that particular attribute comes in handy sometimes...LOL!! Like when you need an annoying problem solved!!
Here's another manifold that looks interesting and the exit hole looks large but I have no idea how big the hole actually is?? 79-80 5th Avenue 360 engine. The profile looks thinner making it a better candidate. Also the location of the exit hole keeps the manifold from hitting the steering shaft. Unfortunately it's not a magnum manifold.
Has anyone ever tried or checked this one out??

Treblig
 

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Thanks.....I know I'm stubborn, but that particular attribute comes in handy sometimes...LOL!! Like when you need an annoying problem solved!!
Here's another manifold that looks interesting and the exit hole looks large but I have no idea how big the hole actually is?? 79-80 5th Avenue 360 engine. The profile looks thinner making it a better candidate. Also the location of the exit hole keeps the manifold from hitting the steering shaft. Unfortunately it's not a magnum manifold.
Has anyone ever tried or checked this one out??

Treblig

Just heard back from the seller of the 5th Avenue manifolds....1 3/4"

Oh well!!

treblig
 
Just got word back on another. It fits the vehicles below and comes with a 1 7/8" hole. I could easily make this one into a 2" manifold but I'm not sure anyone would be interested even if the shape was more conducive to making it fit the a-body. 2" hole is still much, much better than the stock 1 5/8"" hole.

I need to find more manifolds pretty quick because I've SOLD OUT :blob:all my stock!! I even have a order in for a driver's side...I guess some people are just as crazy as me!!!
Don't know if I'm making friends...but I'm certainly making customers!! Now I'll have to wait a week or two before I can start advertising in the "mechanical parts for sale section", it will take that long to buy more and make the modifications.

Treblig


DAKOTA 00-03 5.9L (8-360), L.
DAKOTA 94-99 8-318 (5.2L), L.
DAKOTA 98-99 8-360 (5.9L), L.
DODGE 1500 PICKUP 02-03 5.9L, L.
DODGE 1500 PICKUP 94-01 8-318 (5.2L), L.
DODGE 1500 PICKUP 94-01 8-360 (5.9L), L.
DODGE 2500 PICKUP 94-02 8-360 (5.9L), L.
DODGE 2500 PICKUP 94-96 8-318 (5.2L), L.
DODGE 3500 PICKUP 94-02 8-360 (5.9L), L.
DODGE VAN 94 150 Series; 8-318 (5.2L), L.
DODGE VAN 94 150 Series; 8-360 (5.9L), L.
DODGE VAN 94 250 Series; 8-318 (5.2L), L.
DODGE VAN 94 250 Series; 8-360 (5.9L), L.
DODGE VAN 94 350 Series; 8-318 (5.2L), L.
DODGE VAN 94 350 Series; 8-360 (5.9L), L.
DODGE VAN 95-03 1500 Series; 8-318 (5.2L), L.
DODGE VAN 95-03 1500 Series; 8-360 (5.9L), L.
DODGE VAN 95-03 2500 Series; 8-318 (5.2L), L.
DODGE VAN 95-03 2500 Series; 8-360 (5.9L), L.
DODGE VAN 95-03 3500 Series; 8-318 (5.2L), L.
DODGE VAN 95-03 3500 Series; 8-360 (5.9L), L.
DURANGO 00 5.2L (8-318), L.
DURANGO 00-03 5.9L (8-360), L.
DURANGO 98-99 8-318 (5.2L), L.
DURANGO 98-99 8-360 (5.9L), L.
 
Although the casting number 53010187 looks like the large hole manifold...IT IS NOT>
So watch out for that one too. I had done a lot of research before I started trying to answer the OP's question. I've done more since then and as it turns out there is more than one member who has used the magnum/Dakota large hole manifold on the late and early 60's a-body. Unfortunately the members who accomplished this feat don't always show or give the casting numbers or actually show the measurement on the hole. I would love to see one exhaust hole measurement showing a 2 1/4" factory small block hole that IS NOT a 340???
There's some confusion in my mind on whether the driver's side casting should be 53006617 or 53006619??? The internet magnum "fact" sights say 6617 but some other people say 6619, so that's still an open question for me?? The cars that this manifold was used on had manual steering and they had to modify the steering shaft (sometimes) and also raised the engine 5/8" of an inch (or so). So evidently it is very possible with manual steering and even possible on the 65/66 bodies. It think there should be a "sricky" on this subject because I'm sure many members have interest in the facts as they are found. Unfortunately if you get too many "stickys" you push all the other important threads down on the page and I don't want that.

Treblig
 
I have a 340 manifold on my Barracuda driver's side and couldn't remember the size of the exhaust hole but I had another one packed away so I unboxed it and the hole in this thing is humungous!!! I think this one is 73/74 Hipo 340 driver's side manifold. It has a very nice patina. I was planning on sand blasting it but it looks almost like it's never been used. It doesn't have that rusty layer on the outside. I plan to sell this manifold together with one of my "modified" magnum manifolds as a set very soon. Since I ran out of stock on the modified manifolds I was waiting to have a few extra before I sold this last modified one in the set so I haven't advertised these yet. (I Will not sell this 340 manifold separately.) Somebody with an a body will have everything they need to get plenty of power and a clean fit!! I can't believe that it's actually just a hair over 2 1/4"!!!
I don't know if anyone realizes it but, the manifolds that I sell shoot the exhaust straight out without the sharp bend required by the 340 passenger's side manifold!!

PS - I have more info on the mag manifolds and will post it as soon as I've finished double- checking the Hollander/casting numbers and donor vehicles.


Treblig
 

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As it turns out there are many vehicles that came with the magnum engine (5.2 and 5.7) but not that many that came with the large hole manifold. They used magnum engines in:
92-2000 Dakota
92-2002 Ram
98-2000Durango
92-93 Ramcharger
92-2003 Ram Van
93-98 Jeep Grand Cherokee

It also doesn't matter whether it's the 5.2 or the 5.7 engine.
But I am finding that many of these vehicles use the 53010187 casting which is 1 7/8" exit hole. Yes, it's basically the same shape as the one I sell and would give you more flow than stock (1 5/8") but it would not match the 340 driver's side by a long shot. In fact the 5301087 looks exactly like it's bigger cousin casting 53009376....REMEMBER, the Hollander numbers will be different!!!! They look like the same casting except for the exit hole size. Same thing goes for the driver's side mag manifold, it also has a look-a-like which was used on many vehicles. But the only driver's side that I believe won't work is the driver's side Jeep Grand Cherokee which has an exhaust flange that turns inward towards the Mopar starter. Yes, if you had a Jeep 360 motor with the trans and starter (on the passenger's side) it would work. More about the driver's side later...gotta go!!!!!!!
Happy Hunting!!!

Treblig
 
And here is the infamous "92-93 Dakota" manifold. Hollander number 327-01558, casting number 53006619. This is the large hole driver's side magnum manifold that many member's have installed on their 67-69 a body (and some early a bodies) with manual steering. And "NO" it is not 2 1/4" (as you can see in the pics) like many have speculated. It is the same size as all the others I have bought. The only reason I happen to have this one is that a customer wanted a 2 1/4" magnum manifold for the driver's side for his 318. Otherwise I would have never bought it. So I'll start working my magic and machine this thing out to 2 1/4" to match the passenger's side that he already purchased. This Dakota manifold was used on many other vehicles (11 by my count) but although it looks very similar to the Grand Cherokee driver's side, be very careful. The Jeep driver's side most likely won't work because the exhaust outlet turns in toward the motor (starter) while this Dakota turns out. I posted the Jeep casting numbers already so I won't repeat them again.
Also, remember, just because the vehicle is a "magnum" model does not mean that it has the large hole manifold!!!

As far as I know this particular manifold (driver's side 53006619) was only produced in 92 and 93. Mine happens to be an early production (late 91) for the 92 year's production.

I have more info but since there doesn't seem to be any interest (last 6 posts were mine) I'll leave it at that.
Treblig
 

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Love my Dakota 360 manifolds. I too ported mine a bit, and even grinded a bit of metal to clear power steering pump on 72 cuda. I picked mine up from craigslist for $35. I hit them with high temp cast iron grey paint from Pour15, and they look awesome. And I too yanked those 318 corks with the stove and all. What a difference. From about 1 5/8 to 2-3/16" or so.

Beats the heck out of $750 headers.
But I don't take my car to a race track so there is no need for headers.
Heck, I rarely rev it past 4K
 
Sooo...hook me up with a set that will fit an early A.....please!!! Geof

Well I can but you must realize that the early a bodies have small engine bays. I know that Rusty Rat Rod used this set up in one of his early a bodies (if I remember correctly). Also you can't do it (magnum on driver's side) if you have P/S (Unless you use the 340 manifold), also a manual trans (Z-bar issues, unless you use the 340 manifold) might also be a problem. If anybody on FABO has any other info on this please chime in!! So it depends on what you have in your a- body??? What do you have in your car????

BELOW..."Svensson" used left and right magnum manifolds and so did "Musclecar". The last guy, ("684mulas") used the 340 on the driver's side.

Treblig

Oct 2011....Svensson wrote, "I put the 2-1/8 magnum manifolds in a 1964 dart.
No power nothing and a pushbutton 904. I had to cut the steering collumn, work and weld on my flaming river conversion kit and also had to do a little grinding at the driverside manifold. It took me two days to build the tubings, but now it fits all nice and tight."

Musclecar 4/11, wrote, "Ok, sorry I haven't responded sooner. Working on this exhaust is so exhausting. Pardon the pun. I have some pics of the manifolds installed. The manifold numbers are 53010187. and 53010188. They are supposed to be from a 2002 Dakota RT magnum engine with rear dump, but I think they were available for a few more years. They WILL fit in a 1965 A body with mods to the passenger side. The drivers side will require the Flaming River Mopar conversion shaft, and a manual steering gear box. The flow is comparable to headers. I actually fired it up, and power braked it in my garage. I put it in drive, and let it shift automatically. It went through 1, 2, 3, clear up to 6000 rpm and it wouldn't stop until I let off the throttle!! Everything is very tight, but it is possible.

684mulas wrote, "I had them on a 64 Barracuda with a 340. Its tight but it fit fine with manual steering and brakes"
 
This one came out to exactly the same size as the 340 manifold but it's already sold!! It's a driver's side '92 Dakota 2 1/4" custom machined manifold for a customer.


treblig
 

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Just a quick note, if anybody cares. The passenger side 95ish Grand Cherokee and driver side 95-96 van 360 manifolds fit a small block C body like they were meant to be there.

Also, be aware that SOME 92-93 Magnum manifolds look a lot like the later ones but are small outlets. Been there, now own a surplus set of those.
 
Just a quick note, if anybody cares. The passenger side 95ish Grand Cherokee and driver side 95-96 van 360 manifolds fit a small block C body like they were meant to be there.

Also, be aware that SOME 92-93 Magnum manifolds look a lot like the later ones but are small outlets. Been there, now own a surplus set of those.

I'm sure somebody cares. There are folks out there with small block C bodies so any info always helps. The magnum manifolds that you don't want are the 53010187 casting number. The Hollander number on the smaller magnums is 327-01626L. They look like good ones but they have the smaller exhaust hole. They are an improvement over stock 318 manifolds but they are not 2 1/4" (2 3/16").

Treblig
 
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