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  #1  
Old 06-24-2009, 04:02 PM
ovmman ovmman is offline
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Hi, It's Ovmman again. Just a quick question. I built my 440 20 years ago and used 10 to 1 compression with cam #P4120659, which has a 284 duration and 528 lift. It is a mechanical cam. I used a 3,000 rpm stall converter. Believe it or not, the car has been in storage for 20 years. I started the motor and it ran good, but after 2 kids and 2 mortgages, I am looking for a milder ride. If I swap cams to a stock hydrolic cam besides new one bolt timing chain, what other problems might arise? Will it run ok with the 10 to 1 compression? Used Harlen sharp adjustable rockers so I don't think that it would be a problem. Any thoughts would be appreciated. Thanks.
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  #2  
Old 06-24-2009, 04:49 PM
Cudafever Cudafever is offline
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Your best bet is to get a custom cam made to fit what you want i to do, with what you already have.

If you understand the difference between DCR/SCR then you understand why a stock cam is not the best choice.
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  #3  
Old 06-24-2009, 11:42 PM
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pishta pishta is offline
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might run 440 source AL heads to keep the compression from pinging as AL pulls heat out of the chamber quicker reducing the tendency to knock. Can usually go 1 point higher in compression without pinging with no other mods with AL heads. Add reverse cooling and you can go even higher.
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Old 06-25-2009, 01:14 PM
aarracer aarracer is offline
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Or, you could go to any chrysler dealership and order a stock replacement performance cam that will go straight in without much effort?
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Old 06-25-2009, 05:59 PM
John Kunkel John Kunkel is offline
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The Mopar Performance P4452783 Restoration Cam is a known commodity as it was used on the original Magnums with 10.1 advertised compression.
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Old 06-25-2009, 10:00 PM
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ehostler ehostler is offline
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Of course that was back in the days of leaded gasoline and higher octane...
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Old 06-26-2009, 01:06 AM
dave5711 dave5711 is offline
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I think the milder cam will run fine with the comp.

I think it would be very wise to make sure the springs match the cam though.

Tighter springs make break in harder and increase the chance of cam failure on breakin, dramatically.

Just make sure the ones you ahve fit in to the recommended pressures for the cam you select, and if they don't, buy the correct ones.
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