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  #1  
Old 09-17-2005, 10:00 PM
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The Dartman The Dartman is offline
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Default Valve spring setup for RB MP 509 Cam...
Can any one find the seat pressure and installed height of the valve springs when used with the MP 509 for a big block? Strangely enough, this information apparently is not on my cam card.

Thanks!
Dartman
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Old 09-18-2005, 01:37 AM
Fast One Fast One is offline
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what springs are you going to use?
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  #3  
Old 09-18-2005, 09:40 AM
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rumblefish360 rumblefish360 is offline
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I thought I had the right book. I only have the small block book from MoPar. Sorry.
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Old 09-18-2005, 05:01 PM
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The Dartman The Dartman is offline
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The springs are MP - P5249848. This should really only be needed if Mopar rates thier springs by installed height=seat pressure though. Should be transparent which springs are used when the seat pressure and open pressure are what is needed.

Thanks for the replies..
Dartman
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Old 09-18-2005, 11:55 PM
Fast One Fast One is offline
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I don't have any current info on that spring, sorry, though they did use to recommend the Hemi single spring with damper for that cam, p3690933, 109 lbs seat @ 1.90 in / 333 lbs open @ 1.40 in
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Old 09-19-2005, 01:21 AM
Kevin Garceau Kevin Garceau is offline
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Quote:
Can any one find the seat pressure and installed height of the valve springs when used with the MP 509 for a big block? Strangely enough, this information apparently is not on my cam card.
If you havent already installed that cam, do yourself a favor and get a different cam. Its an alright cam but there are many more out there making much more power with the same mild manners. That cam was designed in 1934 give or take a few years
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Old 09-19-2005, 01:27 AM
jelsr jelsr is offline
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Got my doubts on the year Kevin, the engine wasn't produced till '59.
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  #8  
Old 09-19-2005, 01:44 PM
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The Dartman The Dartman is offline
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I bought that cam to save money since this is my low buck 440... I have about $350 in cam, lifters, pushrods, springs, retainers, and locks. I went the Racer Brown route for my 318, but I'm just throwing together a 440 to get the car switched over for now. It is my understanding that the .509 cam was reworked in the 90's, and then got a new MP part number.

Anyone have any resources that I call or email to find this out?

Dartman
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Old 09-20-2005, 11:44 AM
jelsr jelsr is offline
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#'s are P4120237 and P5007698 with the latter being the revised version. 237/698 292/292 adv. dur. 76/64 O-lap 108/114 C-line .509/.509 lift
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Old 09-20-2005, 11:56 PM
djswwg djswwg is offline
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ya and it's still a great cam, especially for the $ you pay. i'm sure there's better cams out there but these give excellant bang for the buck.........djs
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