360 Magnum

Bruceynz

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Hi AJ/Forms,

Yep I was kinda thinking like that, for all small gain is it worth it, I will return them to him and he can sell them. Thanks for your help.
 

BudW

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I have not been a big fan of aftermarket roller rocker arms – for a number of reasons:
The first one is cost vs. expected outcome.

The next is potential problems with fitage (ie: piston clearance, valve spring/retainer clearance, pushrod clearance, valve guide clearance, valve springs, etc.) and additional parts and/or machining associated with using them.

They don’t hold up very well long term – especially in daily street usage.

The stock rocker arms are almost trouble free. Aftermarket roller rocker arms – not so much.


They do work well in racing, when every bit of 0.001% here and there, can help you win.

My thoughts on the matter (and yes, there will be people who disagree with me – which is fine).
BudW
 

Bruceynz

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I am returning them to my friend, keeping the stamped rockers and stock push rods will make the install of the cam easy and I will not have any issue to worry about. Thanks for your advice!
 

Bruceynz

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Hi Guys,

I requested the cam card from Howards, lets debate my cam, I dunno what changes but as mine is for a carb engine its been ground on 110LSA.

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Bruceynz

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Yep! Thats good, I am not a huge fan of lope, I like the crisp clean sound of the bom bom bom the V8 makes at idle! I got a lopey one now and I HATE it so much I don't drive the car, infact I am in the process of pulling the engine out and putting it up for sale!

I am not sure what you guys turn a stock 360 mag engine too, I was thinking 5500rpm is a safe bet, can you go more?
 
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Oldiron440

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220@.050!!!! Do you want to make torque?

I have a 293/ 289 Ford that makes over 400 tq from 2800 rpm to over 6200 rpm.

Small cubes, big power, let's go for it.
 

4speedjim

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Congratulations on scoring the Magnum!! You'll be very happy with its performance compared to the LA. Where did you find it out of curiosity? I remember you saying there wasn't any that made into NZ or the wreckers down there. Oh yeah, the stroker kit will fit the magnum too, incase you change your mind down the road.
 

Bruceynz

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Ok well people import rams and durango and stuff into NZ as private imports and from time to time they do get wrecked, in the last 10 years I have seen one 318 with the 302 heads on it for sale, (I bought it) 1 magnum and trans, 1 318 magnun and the one I just bought. Although this one was imported by a engine dealer! We have a local auction site called trademe, its more popular than ebay in NZ and most stuff goes through there. I am not looking for a 1/4 mile winner just a nice every day driver with a little bit of off line performance, I am not one for the lopey/choppy idle. So I am kinda setting up a magnum with a cam that Chrysler should have used! Which is easy on the valve chain, nice idle and will pass inspection here with no one blinking an eye :)
 

Bruceynz

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The 408 stroker kit was coming from Clegg, great bunch of guys there and very helpful, there was an issue, icon couldn't supply pistons, after 3 months and lots of promises icon never came through. Then this magnum turned up and I thought I would get it, I liked the roller cam idea and the extra power for free, so the guys at Clegg were kind enough to let me change my order for some Engine Quest heads and a roller cam. At the time I didn't have plans to machine the heads or fit different rockers, the heads are limited to about .5" lift, I have been there with big cams and I don't like them, I dunno why I am just use to hearing a V8 run even and I like that sound, not one that cackles like a chook that has just laid a double yoker egg and it stretched its bum so hard it can't shut up clucking or what ever they do! So I opted for a cam a tad better than stock, a little more duration and lift that takes my heads to their limit, I can use the valve springs that come with the heads and it all bolts together with no issues (just the way I like it, as if anything goes wrong I have delays getting stuff out of the USA) Just remember a flat rate box out of the USA cost me $140NZD to get here! I read the 904s were pretty pathetic in stock trim, a mild 318 could send a stock one to heaven if you stood on it, my current 904 slips when it changes from 1st to 2nd, so probably wasn't going to be long before it departed this planet in burnt out smokey oily mess! So this rebuilt trans should hold the mag quite nicely! My heads and cam left the USA this week so I will see them mid August, sighhhhhh
 

Bruceynz

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If I get bored one day I am going to pull the 904 lock up trans apart and see where all the magic is, they fascinate the hell out of me!
 

kkritsilas

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I think the consensus is that a properly working stock A904 is good for about 350 HP or so, assuming you don't use slicks. With yours slipping, it probably will not live long behind a 36- Magnum.

Some of those imported Dodge Rams and Durangos must have had A518 or A500 transmissions. If they had Magnums in them, they are pretty much guaranteed to do so. Keep your eyes out for one if they pop up locally, as they would be a great upgrade.

The A518 (aka 46RH) is a 4 speed overdrive based on the A727, and the A500 (aja 44RH) is a 4 speed overdrive based on the A999 (ie. heavier duty A904). Both should bolt up to the 360 Magnum, but you will need a new cross member, and need to reword the transmission tunnel. The overdrive gear is really nice to have.
 

Bruceynz

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If you knew all the BS I have to go through to do that you would say stick with the 904, I am NOT allowed to do any welding on my car, has to be done my a certified welder, not allowed to modify the tunnel, I can't change the transmission with out getting the car certified, BTW way when I say certified you need to think $$$ with this PC world no one wants to take any responsibility so they try and spread the blame by having several people look at it and clip the ticket along the way! Hmmmm Its just about becoming impossible to have a we poo without upsetting someone now! If you walk down the street and look at a pretty women if she sees you looking you can be up on charges, oh my lets just look at my dirty boots!

I dunno if you know this but my Government hates your cars! They do not really want me to even have it, but they reluctantly allow it to happen. The steering wheel is on the wrong side, frontal impact standards, seat belts......they make me jump through hoops to get it road legal!

Sorry i am having a rant, not aimed at anyone here
 
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4speedjim

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LMBO!! You sound like me in NY & the folks in Cali. Your exhaust must be cleaner than the air in any major city. No engine mods, idiot lights, non oem tinted glass and on and on... Your going to be super pleased with the Magnum in relatively stock form. Theyre built for strong torque from idle on up. It will go great with the 3.23s or wherever you land on rear gear. Im really happy you where able to find one!
 

kkritsilas

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LMBO!! You sound like me in NY & the folks in Cali. Your exhaust must be cleaner than the air in any major city. No engine mods, idiot lights, non oem tinted glass and on and on... Your going to be super pleased with the Magnum in relatively stock form. Theyre built for strong torque from idle on up. It will go great with the 3.23s or wherever you land on rear gear. Im really happy you where able to find one!

Sorry, I didn't know any of that. Where I live, in Calgary, Canada, the province doesn't really care about vintage/specialty car modifications. So here it is basically get the car insured, use their bill of sale, and get the car registered. Plates don't expire, either. Vintage here is defined as any car over 30 years old.

Here it would be just as I described above, make a new cross member, modify the tunnel, and put it back together.
 

Bruceynz

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Does the 360 Magnum have an oil slinger, the washer like thing that goes over crank in behind the timing chain cover, be buggered if I can find it and I was so careful with all the parts!
 
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MoparKidD-4

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Man that sucks about all those regulations, here in Colorado it's also very lax regarding cars on the road. In fact I see so many broken down junkers on the side of the freeway it might not be a bad idea to have basic inspections. You should see some of the modified stuff around here, one kid has a total POS W123 diesel Mercedes he literally cut the roof and back doors off to make it a Ute.
 

BudW

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Does the 360 Magnum have an oil slinger, the washer like thing that goes over crank in behind the timing chain cover, be buggered if I can find it and I was so careful with all the parts!
As a cost saving item, they quit installing the crank end oil slinger a couple years after producing the Magnum.
A shame really, sense it does help prevent front crankshaft seal leaks.

Personally, I would not assemble any engine without one – for that reason alone – but the newer engines, that it is hard to do – sense the oil pump is driven off of the front crankshaft hub (ie: the front crankshaft seal now also holds back full engine oil pressure! (Sense oil pump is mounted to timing cover) ).

It is worth it to wait a week or so to get one – or rob one off of your existing 360).

They are the same for small and big blocks – if you need to go online to find one.
BudW
 
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