onebaddakota

Has anyone done a stroker or something more substantial? To do that kind of swap in my mind it would have to be substantially faster than what I have in order to be cost effective. I wonder how much more the LS platform has then my magnum for guy who just wants to run NA on a low maintenance hydr. Roller?

casias

iTrader: (1)

Not really sure what you are asking. If you are wanting good horsepower that is reliable, my truck is a good model for that. My truck probably makes 320 rwhp with a bone-stock LY6. This is more than most heavily built Magnums can make. When you start trying to push Magnum motors to that level, they cost a lot to build, and generally don't last very long.

More substantial LS engines? This site is filled with them. A cam can push a 6.0 LS well over 400 rwhp. No Magnum can come close to that.

onebaddakota

Sorry, allow me to clarify. I was looking for more of an apples to apples comparison.(truck to truck)You see a lot of good numbers run from the LS cars, but then you start thinking, ok is that because the're light and more aero with a tranny that soaks up less power then the power sapping trannies in the dodges? In other words, is it more the vehicle and drivetrain or is the magnum motor just that much of a turd?

onebaddakota

Mine runs pretty good. It's nothing special just your typical 4" Chinese crank motor with m1 and Eddie heads, mid length headers, full, exhaust, factory hydr roller set up. Stuff you're very familiar with from your magnum days. I obviously have money into it but not crazy money. I guess I don't want to put an LS into it and then be disappointed given what I have now. Unless of course it will be that much faster.

casias

iTrader: (1)

I've have no regrets over my decision.

There is a night and day difference between the motors. If you already have a running Magnum motor that you like, I don't see the reason to pull it for an LS. It has almost no resale value, and the cost would be about $6-7K depending on the engine/trans combo you use.

But if you are wanting more power, you are on the slippery slope for the Magnum. I am guessing you are probably running high 14's with what you have. Bigger throttle body, porting the heads, cam, torque converter would be the next step. That would get you to about 14 seconds.

Any 6.0 litre combo with an LS should get you 13 seconds, like mine does, stock. Add cam, and you are in the 12's. There aren't that many Dakota trucks that make the 12's, even with a ton of work.

But I wouldn't ever build another Magnum after having done this. Not only do these engines make great horsepower at reasonable prices, there is a huge aftermarket of supports, and any combination you can imagine. And the serviceability of the engine in the chassis is better. I can reach and pull any part on this engine in minutes. Everything comes apart and goes back together easily.

Hope that helps.

Edit: added details.

duner

LoL Casias....
When you start trying to push Magnum motors to that level, they cost a lot to build, and generally don't last very long.

How many years or miles or passes at what HP level does somebody need to put on a Magnum engine before you stop saying that?

casias

iTrader: (1)

Again. LS website, hybrid/conversion thread. The question is about the difference between Magnum motors and LS motors.

I think the Magnum motor is not worth putting money into.

You do.

Edit: For those who don't know, the few people who love these motors have a secret website called racemagnum.com. Like children in a treehouse, they can talk about these motors in private. I think it requires a secret handshake or something to get in.

Their other site, dakotart.com, is complete garbage.

duner

No, I completely understand. Your site. Your opinion. Your bias.

I just wanted to give you an opportunity to explain to the class why YOU think a Magnum can't hold up at higher HP levels.

Of course, you are entirely welcome to have your own opinion and state it as so. I just wanted to make sure you understood that you were basing your opinion on your one singular experience, and that it had nothing whatsoever to do with actual facts about whether the Magnum engine would in fact hold lots of power for a long time without failing.

Just out of curiosity...
How many years worth of 10-second timeslips should I continue to collect or how many thousands of miles should I drive my full-weight 4200# '99 Dakota before I can claim it's Magnum 360 engine is holding up?

casias

iTrader: (1)

If you want to talk about engine efficiency. Here ya go.

Magnum engine. 408 Cu in, Carb, edelbrock heads, cam, M1 intake, 1 3/4 headers

448 hp at 5800, 412 HP at 6000

http://www.hotrod.com/how-to/engine/...-mopar-engine/

LS engine. 409 Cu in, carb, stock heads, cam, intake, 2 inch headers

588 HP at 5800, 564 hp at 6400

And I can tell you, one cost much more than the other.

http://www.hotrod.com/how-to/engine/...iron-block-ls/

duner

Holy change the subject Batman.

So now you don't want to talk about a Magnum engine holding up, but want to talk about how it's cheaper to build a belly-button engine that everybody else has?



That's OK Casias. I understand that some people need other people to show them how things are done. That's OK by me too. I love Hot-Rodding, and everybody should get an opportunity to do it however they can. And don't get me wrong. I'm not bad-mouthing the LS patform in any way, shape, or form. It IS a good platform. Anybody that's on this site and looking at this thread already knows that. (btw Casias - take a close look at our join dates)

Again, I just wanted the rest of the class to understand that the Magnum platform can and does perform and hold up to abuse as well as anything else does.... and that one man's opinion is not exactly gospel.

99DAK

Why don't you ever compare apples to apples.
LT based engines vs. magnum based engines.
LS based engines vs. Gen 3 Hemi engines.
Let's be fair about it.
Even you know what it takes to make power. Heads cam compression. Heads being the biggest factor.

casias

iTrader: (1)

How old is your account? 30 minutes?

casias

iTrader: (1)

It is easy to see longevity by all of the dead threads on dakotart.com

And the few disappointing timeslips and dyno pulls posted there.

duner

Again, how many years of longevity are required for you to say it's "good"?

Dead threads on a forum?
You DO realize that some people buy and sell their rides and change vehicles and projects fairly often don't you?

Do you think I should be disappointed in my Dyno sheet or timeslips?

99DAK

Irrelevant.
Not answering questions seems to be your forte.
Why do you always do unfair comparisons?

casias

iTrader: (1)

Are you searching for a compliment? Ok honey. Your dress is really pretty, and that two lbs you lost makes you look great.

casias

iTrader: (1)

I'm not changing the topic at all.

I think the LS engine is fantastic. I think the Magnum motor is a turd that is not worth my time.

Others may have a different opinion.

duner

You said the Magnum lacked longevity.
I proved you were full of it.

The timeslips they hand me at the timing shack are all the compliments I require. I'm really sorry you have a difficult time understanding facts, but these things I have posted were not actually for your pleasure. You stated your opinion and tried to pretend they were facts. I simply made sure the rest of the Internet understood that it was in fact only your opinion. The fact that you couldn't make a Magnum run or keep one together would your cross to bear alone. Don't blame us for your failures! I'm certainly happy for you that you found a platform with enough support to hold your hand during difficult times.

sierravmax

iTrader: (1)

But when it all comes back to the main point. LS motors are just better over all!

onebaddakota

I'm not sure if this qualifies as a "super bad magnum motor" but here's my junk magnum, cacias. You were almost dead on with your 14 second estimation, btw. Do you think it would be worth the swap?