440 Magnum Camshaft replacement

[LR1970]

HI,

Can anyone give advice on a replacement 440 Magnum Cam? I am thinking Comp Cams EX268, I would prefer to use the stock convertor. I have a very tired 67 R/T and a low budget so if I can reuse the stock convertor I will. Once I strip everything down and I discover I need a new convertor then the cam choice will be a bit more open. But until then, if anyone has good advice on a good cam to use with a stock convertor I will be very grateful.

Leigh

Thanks FBBO

 

[62MAX]

HI,

Can anyone give advice on a replacement 440 Magnum Cam? I am thinking Comp Cams EX268, I would prefer to use the stock convertor. I have a very tired 67 R/T and a low budget so if I can reuse the stock convertor I will. Once I strip everything down and I discover I need a new convertor then the cam choice will be a bit more open. But until then, if anyone has good advice on a good cam to use with a stock convertor I will be very grateful.

Leigh

Thanks FBBO

Your best bet would be call any cam manufacturer,tell them " EXACTLY" what you have and what your intentions and go from there,ask here and you will get more recommendations than you can shake a stick at,then you will be totally confused.It isn't a "one size fit's all",what works for me may not work for you !:thinker:

 

[69a100]

HI,

Can anyone give advice on a replacement 440 Magnum Cam? I am thinking Comp Cams EX268, I would prefer to use the stock convertor. I have a very tired 67 R/T and a low budget so if I can reuse the stock convertor I will. Once I strip everything down and I discover I need a new convertor then the cam choice will be a bit more open. But until then, if anyone has good advice on a good cam to use with a stock convertor I will be very grateful.

Leigh

Thanks FBBO

So you have a very tired motor and want to change cams or do a rebuild, which is it? If your going to do a rebuild, what are your plans for compression, head work, etc.? If you are just looking for a stock rebuild and a little cam on the side? If so anything in the 218-225@50 type cam will be fine with a stock converter as the stock Mopar cam was in that range. I'm running the old Hughes 2330 cam in my 300 w/a 383 and have the stock converter, runs great and has a little attitude idle to it.

 

[lewtot184]

my vote is the summit 6401 for $65. i bought one of these on a whim/curiosity and ended up sticking it in my '69 r/t. these cams are a Crane HP280/290. the seat timing is nearly identical to a magnum cam (magnum cams have long closing ramps so their seat timing is actually longer than advertised). they're ground on a 114lsa with 2 degrees of advance. i mapped the lobe profiles and they have more area under the curve (10 degrees at .200 lobe lift) and a little more lift. they work great with a stock 11 3/4" 440 converter, idle smooth, drive nice and should add a little more performance over the stock magnum cam. i used a little more spring (stock magnum springs may be "iffy" with the .488 exhaust lift). i wouldn't use the summit lifters; buy something better.

 

[LR1970]

Thanks, I am just planning a stock rebuild. The car will be just a cruiser so I prefer to keep it mostly stock. But a little more cam is always good!

 

[69a100]

I forgot to mention as Steve Dulcich wrote in a article about cams a few years ago. If you take the specs of a stock cam, then add no more than 10% to duration, and no more than .050" on lift. "You will have a hot car that can run on a stock converter." Anything between those parameters is good to go! Good Luck

 

[ga66mopar]

I'm running the comp XE274 with a 2400 stall and it pulls very hard from bottom end and has strong mid range power which is what I wanted with a 323 gear. I would think the XE268 would be a good choice for a stock stall converter.

 

[Garys1969RR]

We also using the XE274, and it works great with the street hemi 11" converter in a warmed over 383. Now my 451 with the 509 cam, 292 degrees duration worked with the 11" converter. But went with a higher stall TCI Street Fighter converter and it really works good with the 509 cam. Dropped my ET .4 of a second!

 

[brasil]

..what´s about the Edelbrock Performer Cam ? the numbers look o.k. should be be a strong pulling cam...

 

[lewtot184]

..what´s about the Edelbrock Performer Cam ? the numbers look o.k. should be be a strong pulling cam...

if you look at the lobe profile of the Performer cam it's somewhat less than a stock Magnum. i'm sure it has a place but i wouldn't substitute it for a Magnum. a Magnum cam is pretty mild.

 

[brasil]

...o.k. I was asking, because I have a 1969 440 HP Engine in my Coronet.... and I need to change the cam ( due to lifter failure)
so I bought a 2192 EDE Performer.... Cam /Lifter set to replace the "old one ". But according to your post, it looks like that the EDE Cam wasn´t the best choice.....right ? The rest of the engine is more or less STOCK EDE Performer Intake, 650 AVS CArb HP Manifolds.... 2.5 " Exhaust.. 3.23 Rear and a stock Converter...

Greetings Juergen

P.S would a "purple cam " from Mopar be a better way to go ??

 

[62MAX]

...o.k. I was asking, because I have a 1969 440 HP Engine in my Coronet.... and I need to change the cam ( due to lifter failure)
so I bought a 2192 EDE Performer.... Cam /Lifter set to replace the "old one ". But according to your post, it looks like that the EDE Cam wasn´t the best choice.....right ? The rest of the engine is more or less STOCK EDE Performer Intake, 650 AVS CArb HP Manifolds.... 2.5 " Exhaust.. 3.23 Rear and a stock Converter...

Greetings Juergen

P.S would a "purple cam " from Mopar be a better way to go ??

That's exactly the reason I posted this above !!



Your best bet would be call any cam manufacturer,tell them " EXACTLY" what you have and what your intentions and go from there,ask here and you will get more recommendations than you can shake a stick at,then you will be totally confused.It isn't a "one size fit's all",what works for me may not work for you !

 

[Meep-Meep]

There are plenty of cams out there for stock engines with no more than 9.5:1 CR. I'd focus on a low overlap cam for best street manners, so a 112 - 114 LSA would be good. Some mild cams can be ground on a 110 LSA but best to match with a street RPM range of say 1500 - 5500 for best results. I'm running the MoPar purple .455" / 272 and it is great (on a 112 LSA). I also believe this cam will work with a stock converter and it does work with a stock intake. In my opinion you should always run headers and a free flowing exhaust to squeeze out the most performance you can.

 

[lewtot184]

...o.k. I was asking, because I have a 1969 440 HP Engine in my Coronet.... and I need to change the cam ( due to lifter failure)
so I bought a 2192 EDE Performer.... Cam /Lifter set to replace the "old one ". But according to your post, it looks like that the EDE Cam wasn´t the best choice.....right ? The rest of the engine is more or less STOCK EDE Performer Intake, 650 AVS CArb HP Manifolds.... 2.5 " Exhaust.. 3.23 Rear and a stock Converter...

Greetings Juergen

P.S would a "purple cam " from Mopar be a better way to go ??

the edelbrock cam you bought will have about 10 degrees less duration in area under the curve than a stock magnum. it would be like a 383 2bbl intake lobe and a 383 magnum intake lobe used for the exhaust. it would probably be ok for a 361 4bbl or a mild 383 4bbl. a 440 can easily use more cam. a stock magnum cam is [email protected], [email protected] on the intake lobe, and [email protected], [email protected] exhaust lobe, 2 degrees of advance ground into the cam, 115lsa. a mopar 272-.455 cam is [email protected], [email protected], 112lsa with 2 degrees of advance ground into it. the summit cam is [email protected], [email protected] for the intake lobe, and [email protected], [email protected], 114lsa with 2 degrees of advance ground into it. i've ran all 3 cams and prefer the summit for the area under the curve and the wider lsa. this cam works fine with a stock converter and stock intake and carb and no special timing/advance curves needed. the added effective exhaust lobe can't be anything but a plus with cast iron exhaust manifolds but will work great with headers. i took my r/t out yesterday for 75 mile drive, hills a flat roads, and the engine drove very smooth, pulled hills easily and the power brakes worked fine. i wish i would have dumped the 272-.455 cam years ago and used this "repackaged crane cam" when i had the 6-pak on my r/t.

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let me add something else. there was mention in one of the replys about the old hugh's 2330 camshaft. i have used and still have one of these cams. its an engle k56 intake lobe and k58 exhaust lobe. i love'em, but they're on a 110lsa and the extra lift will need attention to prevent retainer/seal to guide collision. this cam with a 112 or 113lsa would be great with cast iron exhaust manifolds. i ran it in my r/t with the 110lsa and stock converter and thought it might have been a little "edgie" with the big converter; 113lsa probably would have been great. ran 108mph in my 4000+ pound heap with 3.23 gears, stock exhaust and t/a radials.

 

[brasil]

...so the Summit K6400 would be the right cam for me... ?? Instead of the EDE.... don´t know why EDE sell those cams...if they offer
a worse performance than Stock....
Greetings Juergen


P.S for the Summit cam I need stronger springs.. right ?

 

[69a100]

I'm running this cam in my stock 383 66-300. Runs great with stock converter. If you run the new grind Hughs 2328 cam, you will need to run adjustable rockers, which will need pushrods too. Here's how the 2328 sounds like. http://www.youtube.com/watch?v=anejMtR3LGo

 

[lewtot184]

...so the Summit K6400 would be the right cam for me... ?? Instead of the EDE.... don´t know why EDE sell those cams...if they offer
a worse performance than Stock....
Greetings Juergen


P.S for the Summit cam I need stronger springs.. right ?

summit 6401. the exhaust lobe probably has too much lift for stock springs. stock springs coil bind rather quickly. be sure to check them for any cam change.

 

[brasil]

...K 6401 ? this is a bigger cam than the 6400 .... Wouldn´t be the the K 6401 not to big ? I only want to "change " the cam... no need for a big step up. The car is only used for cruising not for the strip. I will also buy some new springs... would be a good idea-
you are right !

Greetings Juergen

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@ 69a100 your ride looks great btw. same colour as my 66 Coronet has and the cam sounds good also !

Greetings from Germany
Juergen