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Old 04-08-2003, 01:58 PM
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dammen8 dammen8 is offline
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Join Date: May 2001
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Ok I know that alot of you people have seen my dyno sheet and have also noticed that my oil pressure is a "tick" on the high side....

So I know that this has been asked before but can you just inner change the spring and nut from a m54d to a m54f to lower the oil pressure? I am obviously running the m54f pump and have lots of oil pressure, and everybody keeps telling me I do not need that much pressure including the dyno operator. I have a m54d 60lb pump sitting on the shelf that I can take the spring and the spring nut out of and put into my m54f pump that is currently in the engine, the check balls are the same size in the pumps, actually everything seems to be the same with the exception of the bypass check ball being about .030 shallower in the m54f pump. This would mean that with the 60lb spring in the pump it would actually be preloading the spring about .030, so I would just end up with a slightly higher pressure than 60lbs but alot less than the current spring....correct? Now I suppose you are saying "why doesnt he just change the pump itself?" well the reason I do not just change the pump is because I have the canton road race pickup already pressed into the m54f housing and its is really tight and I do not know that I could get it out without recking it. Well any help would be great. Thanks

Chad Dammen

ND's fastest Pontiac (I think) and Minot's fastest street car (not like that means much)

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3500lb 10.5" tire. [email protected] with a poor 60'